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179 results on '"T., Ariga"'

2. Vacuum brazing of titanium alloy to stainless steel enhance by fiber laser surface texturing

Author

A.J. Sulaiman H., null M. H. Aiman, null M. Ishak, null M. M. Quazi, null T. Zaharinie, and null T. Ariga

Subjects
Fuel Technology, Mechanics of Materials, Mechanical Engineering, Computational Mechanics, Energy Engineering and Power Technology, Industrial and Manufacturing Engineering
Abstract

A method for improving the brazing joining strength of Titanium alloy/Stainless steel fabricated through fibre laser surface texturing is introduced because it is a simple process that does not require the fabrication of complicated interlayers. However, previous research shows that a milimeter scale was fabricated by surface modification for dissimilar brazing join, yielding insignificant results and limiting the application and degree of enhancement. Fiber laser ablation was used in this study to create microscale periodic patterns (grooves) on a stainless steel surface. No defect or damage induced during laser surface texturing process. The groove dimension was tunable by controlling the laser parameters. Vacuum brazing of Ti6Al4V to 316L stainless steel with surface texturing, the average joint strength was 22.1 MPa, 34% of increase of joining strength compared to unprocessed flat surface. The combination of laser surface texturing and brazing proven effectively on joining strength enhancement.

Published
2021
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3. Multi-Objective Optimization of Mn-Doped Tio2 Content for Wettability, Printability and Intermetallic Layer of Sac305 Pb-Free Solder Paste on a Cu Substrate

Author

T. Ariga and K. Kanlayasiri

Subjects
Surface-mount technology, Materials science, Strategy and Management, Tio2 nanoparticles, Intermetallic, Solder paste, Mn doped, Substrate (electronics), Wetting, Composite material, Layer (electronics), Industrial and Manufacturing Engineering, Computer Science Applications
Abstract

Effects of Mn-doped TiO2 nanoparticles on the wettability, printability and thickness of intermetallic layer of SAC30 on a Cu substrate were studied in this paper. Concentration of Mn-doped TiO2 nanoparticles was varied from 0.05 wt.% to 1[Formula: see text]wt.%. The wettability was evaluated in terms of contact angle of solder on the copper substrate and the printability was measured from the volume ratio of printed solder on the copper substrate to volume of stencil opening. The experimental results showed that 0.10[Formula: see text]wt.% Mn-doped TiO2 led to the lowest contact angle while the printability was decreased with the increase of the added nanoparticles and the thinnest intermetallic layer was found at 0.50[Formula: see text]wt.% Mn-doped TiO2 nanoparticles. Mn-doped TiO2 concentration was then optimized using a desirability function to find optimal values for the three responses. It was found that 0.07[Formula: see text]wt.% was the optimal concentration for the three metrics — wettability, printability and thickness of the intermetallic layer.

Published
2021
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5. Chemical constituents and bioactivity of Piper sarmentosum: a mini review

Author

T. Ariga, A. Azleen, Zarani Mat Taher, S. Sasano, and A.A. Aziz

Subjects
biology, Traditional medicine, Chemistry, Chemical constituents, Piper sarmentosum, biology.organism_classification, complex mixtures, Food Science, Mini review
Abstract

Herbs with medicinal potential are important for health and wellness. The main aim of this review article was to disseminate important information regarding the use of Piper sarmentosum as natural medicine. P. sarmentosum have been reported to possess a varying degree of hypoglycemic, antidiabetic and other additional properties. The antioxidant properties of the herbs may be effective in controlling the oxidative damage. The review article highlights the positive role of traditional herbs as alternative medicine.

Published
2020
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6. Effect of copper based filler composition on the strength of brazed joint

Author

T. Ariga, M. Ishak, Aiman M. H., W. N. W. M. N. Hissyam, and A. J. Sulaiman H.

Subjects
Materials science, Mechanical Engineering, Computational Mechanics, Intermetallic, Energy Engineering and Power Technology, chemistry.chemical_element, Microstructure, Copper, Industrial and Manufacturing Engineering, Metal, Fuel Technology, Brittleness, chemistry, Mechanics of Materials, visual_art, visual_art.visual_art_medium, Shear strength, Brazing, Composite material, Joint (geology)
Abstract

Vacuum brazing of copper-based filler was performed using pure copper plate as its based metal. The brazed joint was obtained at different temperatures, 680oC and 730oC, with same holding time, which is 30 minutes. MBF 2005 (Cu, 5.7wt.%Ni, 9.7wt.%Sn, 7.0wt.%P), MBF 2002 (Cu, 9.9wt.%Ni, 4.0wt.%Sn, 7.8wt.%P) and VZ 2250 (Cu, 7.0wt.%Ni, 9.3wt.%Sn, 6.3wt.%P) alloys were used as brazing filler materials. The intermetallic compound (IMC) and mechanical properties of the joints were investigated in detail. The result show that the interfacial microstructure of the brazed joints is Cu3P and (CuNi)2P. As the brazing temperature increase from 680oC to 730oC, the IMC become thicker leading to decrease in joining strength due to brittle IMC formation. The maximum shear strength reached 112 MPa at 680oC for MBF 2002 and 129 MPa at 730oC for MBF 2005. Hence, it is found that the composition of filler effects the strength of brazed joint.

Published
2019

7. Effect of Laser Surface Modification (LSM) on laser energy absorption for laser brazing

Author

T Ariga, A.Q. Zaifuddin, M. M. Quazi, M. H. Aiman, and Mahadzir Ishak

Subjects
Materials science, Laser scanning, business.industry, Oxide, Laser, law.invention, chemistry.chemical_compound, chemistry, law, Surface roughness, Optoelectronics, Surface modification, Focal length, Brazing, Laser power scaling, business
Abstract

Since the development of the laser in the 1960s a rapid development of research interests in science and technology took place. Since then, the need of laser application in industrials such as automotive, aerospace and electronics is increasing because of several advantages like automation worthiness, noncontact processing and product quality improvement. In this present study, the effect of Laser Surface Modification (LSM) on pure copper plate towards the laser energy absorption during indirect laser brazing process was studied. The laser brazing experiment was conducted inside a chamber under controlled vacuum pressure with 400Pa and irradiated with constant 140 Watt laser power. The defocusing features for laser brazing was used in order to find better focal position. Accordingly, the focal length for this laser brazing experiment was set to the focus point at 124 mm from the focal plane. Meanwhile, during LSM process, laser parameters such as laser scanning speed and focus length have been kept constant throughout the surface modification process. Yet, the laser power and laser frequency have been varied from 9 Watt to 27 Watt and 10 kHz to 80 kHz respectively. Apparently, surface roughness due to surface removal and oxide layer formation were presented during LSM process. These two surface integrities were found to be the factors of increasing laser energy absorption. It was discovered that an increase in surface roughness and oxide layer formation can absorb more laser energy which then results an increase in brazing temperature during laser brazing. This is because, increasing surface roughness will scatter the laser energy over a larger surface area, multiply the reflections in the surface irregularities while the oxide layer will enhance the interference phenomena of laser energy occurring inside the oxide layer. Both mechanisms increase laser energy absorptivity during laser brazing which results a high brazing temperature.

Published
2020
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8. Enhancement of mechanical properties of Copper Brazed by laser surface modification

Author

A J Sulaiman, T Ariga, M. H. Aiman, Mahadzir Ishak, and M. M. Quazi

Subjects
Shear (sheet metal), Materials science, Filler metal, visual_art, visual_art.visual_art_medium, Brazing, Surface modification, Laser power scaling, Wetting, Ceramic, Composite material, Tensile testing
Abstract

Nowadays, laser surface modification (LSM) has become the most advance technique for improving the surface properties for joining methods. This is due to its advantages such as cleaner, precise, more reliable and provides exact control compare to other surface modification techniques. This technique also applicable on wide range of materials, such as metal/alloy, ceramic and polymer. Brazing is a metal-joining process in which two or more metal items are joint together by melting and flowing a filler metal into the joint, the filler metal having a lower melting point than the base materials. The brazing process performed under a controlled atmosphere in vacuum tube furnace. Microscopic observations were made by use of both optical and electron microscopes. Fibre laser surface modification-brazing of 2 mm thick 99% pure copper plate in the lap joint configuration performing with Cu-based filler metal. There are three microgrooves were produced with three different laser power apply 15 watt, 21 watt and 27 watt. It found that successful brazing and wetting can be achieved by modified the surface for the base metal. The result of shear tensile test indicated that the highest shear strength was achieve in groove by using 27. This is because of its excellent of its excellent spreading behaviour of molten filler metal, largest bonding interface area and suitable intermetallic compound (IMC) distribution.

Published
2020
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9. The effect of rock composition on muon tomography measurements

Author

A. Lechmann, D. Mair, A. Ariga, T. Ariga, A. Ereditato, R. Nishiyama, C. Pistillo, P. Scampoli, F. Schlunegger, M. Vladymyrov, Lechmann, Alessandro, Mair, David, Ariga, Akitaka, Ariga, Tomoko, Ereditato, Antonio, Nishiyama, Ryuichi, Pistillo, Ciro, Scampoli, Paola, Schlunegger, Fritz, and Vladymyrov, Mykhailo

Subjects
010504 meteorology & atmospheric sciences, 530 Physics, Stratigraphy, Mineralogy, Soil Science, Type (model theory), 010502 geochemistry & geophysics, 01 natural sciences, Radiographic testing, Physics::Geophysics, Absorption rate, lcsh:Stratigraphy, Geochemistry and Petrology, 550 Earth sciences & geology, Geophysic, 0105 earth and related environmental sciences, Earth-Surface Processes, lcsh:QE640-699, Muon, Muon tomography, Mineral, Resolution (electron density), lcsh:QE1-996.5, Paleontology, Geology, Composition (combinatorics), lcsh:Geology, Geophysics, Earth-Surface Processe
Abstract

In recent years, the use of radiographic inspection with cosmic-ray muons has spread into multiple research and industrial fields. This technique is based on the high-penetration power of cosmogenic muons. Specifically, it allows the resolution of internal density structures of large scale, geological objects through precise measurement of the muon absorption rate. So far in many previous works, this muon absorption rate has been considered to depend solely on the density of traversed material (under the assumption of a standard rock) but the variation in chemical composition has not been taken seriously into account. However, from our experience with muon tomography in Alpine environments we find that this assumption causes a substantial bias on the muon flux calculation, particularly where the target consists of high {Z2/A} (like basalts) or low {Z2/A} (e.g. dolomites) rocks and where the material thickness exceeds 300 m. In this paper we derive an energy loss equation for different minerals and we additionally derive a related equation for mineral assemblages that can be used for any rock type on which mineralogical data is available. Thus, for muon tomography experiments in which high/low {Z2/A} rock thicknesses can be expected, it is advisable to plan an accompanying geological field campaign to determine a realistic rock model.

Published
2018
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11. Procedure for short-lived particle detection in the OPERA experiment and its application to charm decays

Author

N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, A. Buonaura, S. Buontempo, B. Büttner, M. Chernyavsky, A. Chukanov, L. Consiglio, N. D’Ambrosio, G. De Lellis, M. De Serio, P. Del Amo Sanchez, A. Di Crescenzo, D. Di Ferdinando, N. Di Marco, S. Dmitrievski, M. Dracos, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, R. A. Fini, T. Fukuda, G. Galati, A. Garfagnini, G. Giacomelli, C. Göllnitz, J. Goldberg, Y. Gornushkin, G. Grella, M. Guler, C. Gustavino, C. Hagner, T. Hara, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, J. Kawada, J. H. Kim, S. H. Kim, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, M. Malenica, G. Mandrioli, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, S. Mikado, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. D. Park, I. G. Park, L. Pasqualini, A. Pastore, L. Patrizii, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, F. Pupilli, M. Roda, H. Rokujo, T. Roganova, G. Rosa, O. Ryazhskaya, O. Sato, A. Schembri, I. Shakiryanova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, T. Strauss, P. Strolin, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, S. Zemskova, A. Zghiche, OpenMETU, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), OPERA, N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, A. Buonaura, S. Buontempo, B. Buettner, M. Chernyavsky, A. Chukanov, L. Consiglio, N. D'Ambrosio, G. D. Lelli, M. D. Serio, P. D. Amo, A. D. Crescenzo, D. D. Ferdinando, N. D. Marco, S. Dmitrievski, M. Draco, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, R. A. Fini, T. Fukuda, G. Galati, A. Garfagnini, G. Giacomelli, C. Goellnitz, J. Goldberg, Y. Gornushkin, G. Grella, M. Guler, C. Gustavino, C. Hagner, T. Hara, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, J. Kawada, J. H. Kim, S. H. Kim, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, M. Malenica, G. Mandrioli, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, S. Mikado, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. D. Park, I. G. Park, L. Pasqualini, A. Pastore, L. Patrizii, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, F. Pupilli, M. Roda, H. Rokujo, T. Roganova, G. Rosa, O. Ryazhskaya, O. Sato, A. Schembri, I. Shakiryanova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, T. Strau, P. Strolin, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, S. Zemskova, A. Zghiche, Agafonova, N, Aleksandrov, A, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Bender, D, Bertolin, A, Bozza, C, Brugnera, R, Buonaura, A, Buontempo, S, Büttner, B, Chernyavsky, M, Chukanov, A, Consiglio, L, D’Ambrosio, N, De Lellis, G, De Serio, M, Del Amo Sanchez, P, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Ereditato, A, Fini, R, Fukuda, T, Galati, G, Garfagnini, A, Giacomelli, G, Göllnitz, C, Goldberg, J, Gornushkin, Y, Grella, G, Guler, M, Gustavino, C, Hagner, C, Hara, T, Hollnagel, A, Hosseini, B, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Kamiscioglu, C, Kamiscioglu, M, Kawada, J, Kim, J, Kim, S, Kitagawa, N, Klicek, B, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Lauria, A, Lenkeit, J, Ljubicic, A, Longhin, A, Loverre, P, Malgin, A, Malenica, M, Mandrioli, G, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meregaglia, A, Mikado, S, Monacelli, P, Montesi, M, Morishima, K, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Niwa, K, Ogawa, S, Okateva, N, Olshevsky, A, Omura, T, Ozaki, K, Paoloni, A, Park, B, Park, I, Pasqualini, L, Pastore, A, Patrizii, L, Pessard, H, Pistillo, C, Podgrudkov, D, Polukhina, N, Pozzato, M, Pupilli, F, Roda, M, Rokujo, H, Roganova, T, Rosa, G, Ryazhskaya, O, Sato, O, Schembri, A, Shakiryanova, I, Shchedrina, T, Sheshukov, A, Shibuya, H, Shiraishi, T, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Spinetti, M, Stanco, L, Starkov, N, Stellacci, S, Stipcevic, M, Strauss, T, Strolin, P, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yoon, C, Zemskova, S, Zghiche, A, N., Agafonova, Aleksandrov, A., A., Anokhina, S., Aoki, A., Ariga, T., Ariga, D., Bender, A., Bertolin, C., Bozza, R., Brugnera, Buonaura, Annarita, S., Buontempo, B., B?ttner, M., Chernyavsky, A., Chukanov, L., Consiglio, N., D?ambrosio, DE LELLIS, Giovanni, M., De Serio, P., Del Amo Sanchez, DI CRESCENZO, Antonia, D., Di Ferdinando, N., Di Marco, S., Dmitrievski, M., Draco, D., Duchesneau, S., Dusini, T., Dzhatdoev, J., Ebert, A., Ereditato, R. A., Fini, T., Fukuda, Galati, Giuliana, A., Garfagnini, G., Giacomelli, C., G?llnitz, J., Goldberg, Y., Gornushkin, G., Grella, M., Guler, C., Gustavino, C., Hagner, T., Hara, A., Hollnagel, Hosseini, Behzad, H., Ishida, K., Ishiguro, K., Jakovcic, C., Jollet, C., Kamiscioglu, M., Kamiscioglu, J., Kawada, J. H., Kim, S. H., Kim, N., Kitagawa, B., Klicek, K., Kodama, M., Komatsu, U., Kose, I., Kreslo, Lauria, Adele, J., Lenkeit, A., Ljubicic, A., Longhin, P., Loverre, A., Malgin, M., Malenica, G., Mandrioli, T., Matsuo, V., Matveev, N., Mauri, E., Medinaceli, A., Meregaglia, S., Mikado, P., Monacelli, Montesi, MARIA CRISTINA, K., Morishima, M. T., Muciaccia, N., Naganawa, T., Naka, M., Nakamura, T., Nakano, Y., Nakatsuka, K., Niwa, S., Ogawa, N., Okateva, A., Olshevsky, T., Omura, K., Ozaki, A., Paoloni, B. D., Park, I. G., Park, L., Pasqualini, A., Pastore, L., Patrizii, H., Pessard, C., Pistillo, D., Podgrudkov, N., Polukhina, M., Pozzato, F., Pupilli, M., Roda, H., Rokujo, T., Roganova, G., Rosa, O., Ryazhskaya, O., Sato, A., Schembri, I., Shakiryanova, T., Shchedrina, A., Sheshukov, H., Shibuya, T., Shiraishi, G., Shoziyoev, S., Simone, M., Sioli, C., Sirignano, G., Sirri, M., Spinetti, L., Stanco, N., Starkov, S. M., Stellacci, M., Stipcevic, T., Strau, Strolin, PAOLO EMILIO, S., Takahashi, M., Tenti, F., Terranova, V., Tioukov, S., Tufanli, P., Vilain, M., Vladimirov, L., Votano, J. L., Vuilleumier, G., Wilquet, B., Wonsak, C. S., Yoon, S., Zemskova, A., Zghiche, DIP. DI FISICA, DIPARTIMENTO DI FISICA E ASTRONOMIA 'AUGUSTO RIGHI', AREA MIN. 02 - Scienze fisiche, and Da definire

Subjects
Particle physics, Physics and Astronomy (miscellaneous), 530 Physics, Hadron, FOS: Physical sciences, tau-neutrino interactions, 01 natural sciences, High Energy Physics - Experiment, decay, High Energy Physics - Experiment (hep-ex), neutrino, short-lived particle, OPERA, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Charm (quantum number), 010306 general physics, Engineering (miscellaneous), Charged current, neutrino oscillations, tau neutrino interactions, emulsion, Physics, Interaction point, 010308 nuclear & particles physics, Emulsion, 0%22">CHARMED MESONS (|C|>0, NEUTRINO DETECTORS, NUCLEAR EMULSION, chorus experiment, oscillation, High Energy Physics::Phenomenology, Order (ring theory), Physique des particules élémentaires, Particle, High Energy Physics::Experiment, Neutrino, Particle Physics - Experiment, Lepton
Abstract

The OPERA experiment, designed to perform the first observation of (Formula Presented) oscillations in appearance mode through the detection of the τ leptons produced in ντ charged current interactions, has collected data from 2008 to 2012. In the present paper, the procedure developed to detect τ 1~ from the neutrino interaction point, is described in detail and applied to the search for charmed hadrons, showing similar decay topologies as the τ lepton. In the analysed sample, 50 charm decay candidate events are observed while 54 ±4 are expected, proving that the detector performance and the analysis chain applied to neutrino events are well reproduced by the OPERA simulation and thus validating the methods for ντ appearance detection., 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2014
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12. Evidence for nu(mu) -> nu(tau) appearance in the CNGS neutrino beam with the OPERA experiment

Author

N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, T. Asada, D. Autiero, A. Ben Dhahbi, A. Badertscher, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, F. Brunet, G. Brunetti, A. Buonaura, S. Buontempo, B. B?ttner, L. Chaussard, M. Chernyavsky, V. Chiarella, A. Chukanov, L. Consiglio, N. D?Ambrosio, M. De Serio, P. Del Amo Sanchez, D. Di Ferdinando, N. Di Marco, S. Dmitrievski, M. Dracos, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, J. Favier, T. Ferber, G. Ferone, R. ?.A. Fini, T. Fukuda, G. Galati, A. Garfagnini, G. Giacomelli, C. Goellnitz, J. Goldberg, Y. Gornushkin, G. Grella, F. Grianti, M. Guler, C. Gustavino, C. Hagner, K. Hakamata, T. Hara, T. Hayakawa, M. Hierholzer, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, M. Ishikawa, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, T. Katsuragawa, J. Kawada, H. Kawahara, J. ?.H. Kim, S. ?.H. Kim, M. Kimura, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, G. Mandrioli, J. Marteau, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, P. Migliozzi, S. Mikado, M. Miyanishi, E. Miyashita, P. Monacelli, K. Morishima, M. ?.T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. ?.D. Park, I. ?.G. Park, A. Pastore, L. Patrizii, E. Pennacchio, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, K. Pretzl, F. Pupilli, R. Rescigno, M. Roda, H. Rokujo, T. Roganova, G. Rosa, I. Rostovtseva, A. Rubbia, O. Ryazhskaya, O. Sato, Y. Sato, A. Schembri, W. Schmidt Parzefal, I. Shakiryanova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. ?.M. Stellacci, M. Stipcevic, T. Strauss, P. Strolin, K. Suzuki, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. ?.L. Vuilleumier, G. Wilquet, B. Wonsak, C. ?.S. Yoon, J. Yoshida, M. Yoshimoto, Y. Zaitsev, S. Zemskova, A. Zghiche, DE LELLIS, GIOVANNI, DI CRESCENZO, ANTONIA, LAURIA, ADELE, MONTESI, MARIA CRISTINA, N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, T. Asada, D. Autiero, A. B. Dhahbi, A. Badertscher, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, F. Brunet, G. Brunetti, A. Buonaura, S. Buontempo, B. Buettner, L. Chaussard, M. Chernyavsky, V. Chiarella, A. Chukanov, L. Consiglio, N. D'Ambrosio, G. D. Lelli, M. D. Serio, P. D. Amo, A. D. Crescenzo, D. D. Ferdinando, N. D. Marco, S. Dmitrievski, M. Draco, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, J. Favier, T. Ferber, G. Ferone, R. A. Fini, T. Fukuda, G. Galati, A. Garfagnini, G. Giacomelli, C. Goellnitz, J. Goldberg, Y. Gornushkin, G. Grella, F. Grianti, M. Guler, C. Gustavino, C. Hagner, K. Hakamata, T. Hara, T. Hayakawa, M. Hierholzer, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, M. Ishikawa, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, T. Katsuragawa, J. Kawada, H. Kawahara, J. H. Kim, S. H. Kim, M. Kimura, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, G. Mandrioli, J. Marteau, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, P. Migliozzi, S. Mikado, M. Miyanishi, E. Miyashita, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. D. Park, I. G. Park, A. Pastore, L. Patrizii, E. Pennacchio, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, K. Pretzl, F. Pupilli, R. Rescigno, M. Roda, H. Rokujo, T. Roganova, G. Rosa, I. Rostovtseva, A. Rubbia, O. Ryazhskaya, O. Sato, Y. Sato, A. Schembri, W. Schmidt-Parzefal, I. Shakiryanova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, T. Strau, P. Strolin, K. Suzuki, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, J. Yoshida, M. Yoshimoto, Y. Zaitsev, S. Zemskova, A. Zghiche, N., Agafonova, Aleksandrov, A., A., Anokhina, S., Aoki, A., Ariga, T., Ariga, T., Asada, D., Autiero, A., Ben Dhahbi, A., Badertscher, D., Bender, A., Bertolin, C., Bozza, R., Brugnera, F., Brunet, G., Brunetti, A., Buonaura, S., Buontempo, B., B?ttner, L., Chaussard, M., Chernyavsky, V., Chiarella, A., Chukanov, L., Consiglio, N., D?ambrosio, DE LELLIS, Giovanni, M., De Serio, P., Del Amo Sanchez, DI CRESCENZO, Antonia, D., Di Ferdinando, N., Di Marco, S., Dmitrievski, M., Draco, D., Duchesneau, S., Dusini, T., Dzhatdoev, J., Ebert, A., Ereditato, J., Favier, T., Ferber, G., Ferone, Fini, R. ?. A., T., Fukuda, G., Galati, A., Garfagnini, G., Giacomelli, C., Goellnitz, J., Goldberg, Y., Gornushkin, G., Grella, F., Grianti, M., Guler, C., Gustavino, C., Hagner, K., Hakamata, T., Hara, T., Hayakawa, M., Hierholzer, A., Hollnagel, B., Hosseini, H., Ishida, K., Ishiguro, M., Ishikawa, K., Jakovcic, C., Jollet, C., Kamiscioglu, M., Kamiscioglu, T., Katsuragawa, J., Kawada, H., Kawahara, Kim, J. ?. H., Kim, S. ?. H., M., Kimura, N., Kitagawa, B., Klicek, K., Kodama, M., Komatsu, U., Kose, I., Kreslo, Lauria, Adele, J., Lenkeit, A., Ljubicic, A., Longhin, P., Loverre, A., Malgin, G., Mandrioli, J., Marteau, T., Matsuo, V., Matveev, N., Mauri, E., Medinaceli, A., Meregaglia, P., Migliozzi, S., Mikado, M., Miyanishi, E., Miyashita, P., Monacelli, Montesi, MARIA CRISTINA, K., Morishima, Muciaccia, M. ?. T., N., Naganawa, T., Naka, M., Nakamura, T., Nakano, Y., Nakatsuka, K., Niwa, S., Ogawa, N., Okateva, A., Olshevsky, T., Omura, K., Ozaki, A., Paoloni, Park, B. ?. D., Park, I. ?. G., A., Pastore, L., Patrizii, E., Pennacchio, H., Pessard, C., Pistillo, D., Podgrudkov, N., Polukhina, M., Pozzato, K., Pretzl, F., Pupilli, R., Rescigno, M., Roda, H., Rokujo, T., Roganova, G., Rosa, I., Rostovtseva, A., Rubbia, O., Ryazhskaya, O., Sato, Y., Sato, A., Schembri, W., Schmidt Parzefal, I., Shakiryanova, T., Shchedrina, A., Sheshukov, H., Shibuya, T., Shiraishi, G., Shoziyoev, S., Simone, M., Sioli, C., Sirignano, G., Sirri, M., Spinetti, L., Stanco, N., Starkov, Stellacci, S. ?. M., M., Stipcevic, T., Strau, P., Strolin, K., Suzuki, S., Takahashi, M., Tenti, F., Terranova, V., Tioukov, S., Tufanli, P., Vilain, M., Vladimirov, L., Votano, Vuilleumier, J. ?. L., G., Wilquet, B., Wonsak, Yoon, C. ?. S., J., Yoshida, M., Yoshimoto, Y., Zaitsev, S., Zemskova, and A., Zghiche

Subjects
NEUTRINO OSCILLATIONS, Physics::Instrumentation and Detectors, PARTICLE PHYSICS, oscillation, neutrino detectors and telescopes, High Energy Physics::Experiment, NEUTRINO DETECTORS, NUCLEAR EMULSION, TAU LEPTON
Abstract

The OPERA experiment is designed to search for nu(mu) -> nu(tau) oscillations in appearance mode, i.e., through the direct observation of the tau lepton in nu(tau)- charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two nu(tau) candidates with a tau decaying into hadrons were observed in a subsample of data of the 2008-2011 runs. Here we report the observation of a third nu(tau) candidate in the tau(-) -> mu(-) decay channel coming from the analysis of a subsample of the 2012 run. Taking into account the estimated background, the absence of nu(mu) -> nu(tau) oscillations is excluded at the 3.4 sigma level.

Published
2014

13. Development of nuclear emulsions with spatial resolution for the AEgIS experiment

Author

M. Kimura, S. Aghion, O. Ahl?n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Br?unig, J. Bremer, R. S. Brusa, G. Burghart, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, S. D. Hogan, T. Huse, E. Jordan, L. V. J?rgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, A. Knecht, D. Krasnick?, V. Lagomarsino, S. Mariazzi, V. A. Matveev, F. Merkt, F. Moia, G. Nebbia, P. N?d?lec, M. K. Oberthaler, N. Pacifico, V. Petr??ek, C. Pistillo, F. Prelz, M. Prevedelli, C. Regenfus, C. Riccardi, O. R?hne, A. Rotondi, H. Sandaker, J. Storey, M. A. Subieta Vasquez, M. ?pa?ek, G. Testera, D. Trezzi, R. Vaccarone, S. Zavatarelli, SCAMPOLI, PAOLA, M. Kimura, S. Aghion, O. Ahlén, C. Amsler, A. Ariga, T. Ariga, A.S. Belov, G. Bonomi, P. Bräunig, J. Bremer, R.S. Brusa, G. Burghart, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S.N. Gninenko, S. Haider, S.D. Hogan, T. Huse, E. Jordan, L.V. Jørgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, A. Knecht, D. Krasnický, V. Lagomarsino, S. Mariazzi, V.A. Matveev, F. Merkt, F. Moia, G. Nebbia, P. Nédélec, M.K. Oberthaler, N. Pacifico, V. Petráček, C. Pistillo, F. Prelz, M. Prevedelli, C. Regenfu, C. Riccardi, O. Røhne, A. Rotondi, H. Sandaker, P. Scampoli, J. Storey, M.A. Subieta Vasquez, M. Špaček, G. Testera, D. Trezzi, R. Vaccarone, S. Zavatarelli, M., Kimura, S., Aghion, O., Ahl?n, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, G., Bonomi, P., Br?unig, J., Bremer, R. S., Brusa, G., Burghart, L., Cabaret, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, S. D., Hogan, T., Huse, E., Jordan, L. V., J?rgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, A., Knecht, D., Krasnick?, V., Lagomarsino, S., Mariazzi, V. A., Matveev, F., Merkt, F., Moia, G., Nebbia, P., N?d?lec, M. K., Oberthaler, N., Pacifico, V., Petr??ek, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., R?hne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storey, M. A., Subieta Vasquez, M., ?pa?ek, G., Testera, D., Trezzi, R., Vaccarone, and S., Zavatarelli

Subjects
Physics::Instrumentation and Detectors, ELEMENTARY PARTICLE PHYSICS, GRAVITATION, Nuclear Experiment
Abstract

The main goal of the AEgIS experiment at CERN is to test the weak equivalence principle for antimatter. We will measure the Earth's gravitational acceleration g with antihydrogen atoms being launched in a horizontal vacuum tube and traversing a moiré deflectometer. We intend to use a position sensitive device made of nuclear emulsions (combined with a time-of-flight detector such as silicon μ-strips) to measure precisely their annihilation points at the end of the tube. The goal is to determine g with a 1% relative accuracy. In 2012 we tested emulsion films in vacuum and at room temperature with low energy antiprotons from the CERN antiproton decelerator. First results on the expected performance for AEgIS are presented.

Published
2013

14. AEgIS Experiment: Measuring the acceleration g of the earth’s gravitational field on antihydrogen beam

Author

L. Bravina, M. A. Subieta Vasquez, S. Aghion, O. Ahlén, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Bräunig, J. Bremer, R. S. Brusa, L. Cabaret, M. Caccia, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, L. Dassa, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Heider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jørgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, D. Krasnický, V. Lagomarsino, S. Mariazzi, V. A. Matveev, F. Merkt, F. Moia, G. Nebbia, P. Nédélec, M. K. Oberthaler, N. Pacifico, V. Petráček, C. Pistilo, F. Prelz, M. Prevedelli, C. Regenfus, C. Ricardi, O. Røhne, A. Rotondi, H. Sandaker, J. Storey, M. Špaček, G. Testera, D. Trezzi, R. Vaccarone, F. Villa, S. Zavatarelli, Y. Foka, S. Kabana, SCAMPOLI, PAOLA, L., Bravina, M. A., Subieta Vasquez, S., Aghion, O., Ahlén, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, G., Bonomi, P., Bräunig, J., Bremer, R. S., Brusa, L., Cabaret, M., Caccia, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, L., Dassa, J. H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Heider, S. D., Hogan, T., Huse, E., Jordan, L. V., Jørgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, D., Krasnický, V., Lagomarsino, S., Mariazzi, V. A., Matveev, F., Merkt, F., Moia, G., Nebbia, P., Nédélec, M. K., Oberthaler, N., Pacifico, V., Petráček, C., Pistilo, F., Prelz, M., Prevedelli, C., Regenfu, C., Ricardi, O., Røhne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storey, M., Špaček, G., Testera, D., Trezzi, R., Vaccarone, F., Villa, S., Zavatarelli, Y., Foka, and S., Kabana

Published
2014

15. Measuring g with Aegis, Progress and Perspectives

Author

D. Krasnick?, S. Aghion, O. Ahl?n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, K. Berggren, G. Bonomi, P. Br?unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, T. Huse, E. Jordan, L. V. J?rgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, V. Lagomarsino, S. Lehner, A. Magnani, C. Malbrunot, S. Mariazzi, V. A. Matveev, G. Nebbia, P. N?d?lec, M. K. Oberthaler, N. Pacifico, V. Petr??ek, C. Pistillo, F. Prelz, M. Prevedelli, C. Regenfus, C. Riccardi, O. R?hne, A. Rotondi, H. Sandaker, J. Storey, M. A. Subieta Vasquez, M. ?pa?ek, G. Testera, E. Widmann, P. Yzombard, S. Zavatarelli, J. Zmeskal, SCAMPOLI, PAOLA, D., Krasnick?, S., Aghion, O., Ahl?n, C., Amsler, A., Ariga, T., Ariga, A. S., Belov, K., Berggren, G., Bonomi, P., Br?unig, J., Bremer, R. S., Brusa, L., Cabaret, C., Canali, R., Caravita, F., Castelli, G., Cerchiari, S., Cialdi, D., Comparat, G., Consolati, H., Derking, S., Di Domizio, L., Di Noto, M., Doser, A., Dudarev, A., Ereditato, R., Ferragut, A., Fontana, P., Genova, M., Giammarchi, A., Gligorova, S. N., Gninenko, S., Haider, T., Huse, E., Jordan, L. V., J?rgensen, T., Kaltenbacher, J., Kawada, A., Kellerbauer, M., Kimura, A., Knecht, V., Lagomarsino, S., Lehner, A., Magnani, C., Malbrunot, S., Mariazzi, V. A., Matveev, G., Nebbia, P., N?d?lec, M. K., Oberthaler, N., Pacifico, V., Petr??ek, C., Pistillo, F., Prelz, M., Prevedelli, C., Regenfu, C., Riccardi, O., R?hne, A., Rotondi, H., Sandaker, Scampoli, Paola, J., Storey, M. A., Subieta Vasquez, M., ?pa?ek, G., Testera, E., Widmann, P., Yzombard, S., Zavatarelli, and J., Zmeskal

Abstract

AE¯gIS experiment’s main goal is to measure the local gravitational acceleration of antihydrogen ¯g and thus perform a direct test of the weak equivalence principle with antimatter. In the first phase of the experiment the aim is to measure ¯g with 1% relative precision. This paper presents the antihydrogen production method and a description of some components of the experiment, which are necessary for the gravity measurement. Current status of the AE¯gIS experimental apparatus is presented and recent commissioning results with antiprotons are outlined. In conclusion we discuss the short-term goals of the AE¯gIS collaboration that will pave the way for the first gravity measurement in the near future.

Published
2014

16. Effects of current density on the formation and microstructure of Sn–9Zn, Sn–8Zn–3Bi and Sn–3Ag–0.5Cu solder joints

Author

Ahmad Badri Ismail, B.D. Long, T. Ariga, D.N. Binh, and Radzali Othman

Subjects
Materials science, Mechanical Engineering, Metallurgy, Metals and Alloys, Intermetallic, General Chemistry, Substrate (electronics), Microstructure, Anode, Mechanics of Materials, Soldering, Materials Chemistry, Growth rate, Current density, Joint (geology)
Abstract

The formation and growth of intermetallic compounds (IMCs) between lead-free solder alloys and Cu substrate were investigated. Cu6Sn5 IMC was formed in the Sn–3Ag–0.5Cu solder joint, whilst Cu5Zn8 IMC was formed in the Sn–9Zn and Sn–8Zn–3Bi solder joints after soldering. After exposure to a current density of 500 A/cm2 and 100 °C for 120 h, a sub-layer was detected in the Sn–3Ag–0.5Cu solder joint and this was identified as IMC Cu3Sn. The growth of the IMCs increased with increasing current density and was found to be faster at the anode side. Under the same testing conditions, the results showed that the growth rate or the thickness of the IMCs was highest in Sn–9Zn, followed by Sn–8Zn–3Bi, and the least being in Sn–3Ag–0.5Cu. The microstructure of Sn–3Ag–0.5Cu solder joint was observed to exhibit changes under exposure to current, whilst the microstructure of the Sn–9Zn and Sn–8Zn–3Bi solder joints remain unchanged, except for the increase in IMCs thickness.

Published
2012
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17. New results on νμ → ντ appearance with the OPERA experiment in the CNGS beam

Author

N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, T. Asada, D. Autiero, A. Badertscher, A. Ben Dhahbi, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, G. Brunetti, B. Büttner, S. Buontempo, L. Chaussard, M. Chernyavskiy, V. Chiarella, A. Chukanov, L. Consiglio, N. D’Ambrosio, P. Amo Sanchez, G. Lellis, M. Serio, A. Crescenzo, D. Ferdinando, N. Marco, S. Dmitrievski, M. Dracos, D. Duchesneau, S. Dusini, J. Ebert, A. Ereditato, J. Favier, T. Ferber, R. A. Fini, T. Fukuda, A. Garfagnini, C. Goellnitz, J. Goldberg, Y. Gornushkin, G. Grella, F. Grianti, A. M. Guler, C. Gustavino, C. Hagner, K. Hakamata, T. Hara, T. Hayakawa, M. Hierholzer, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, M. Ishikawa, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, T. Katsuragawa, H. Kawahara, J. Kawada, J. H. Kim, S. H. Kim, M. Kimura, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, G. Mandrioli, J. Marteau, T. Matsuo, V. Matveev, A. Meregaglia, P. Migliozzi, S. Mikado, A. Minotti, M. Miyanishi, E. Miyashita, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. D. Park, I. G. Park, A. Pastore, L. Patrizii, E. Pennacchio, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, K. Pretzl, F. Pupilli, R. Rescigno, M. Roda, T. Roganova, H. Rokujo, G. Rosa, I. Rostovtseva, A. Rubbia, A. Russo, O. Ryazhskaya, O. Sato, Y. Sato, A. Schembri, W. Schmidt Parzefall, I. Shakiryanova, T. Schcedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, T. Strauss, P. Strolin, K. Suzuki, S. Takahashi, F. Terranova, V. Tioukov, P. Tolun, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, J. Yoshida, M. Yoshimoto, Y. Zaitsev, S. Zemskova, A. Zghiche, GIACOMELLI, GIORGIO MARIA, MAURI, NICOLETTA, MEDINACELI VILLEGAS, EDUARDO, SIOLI, MAXIMILIANO, TENTI, MATTEO, N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, T. Asada, D. Autiero, A. Badertscher, A. Ben Dhahbi, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, G. Brunetti, B. Büttner, S. Buontempo, L. Chaussard, M. Chernyavskiy, V. Chiarella, A. Chukanov, L. Consiglio, N. D’Ambrosio, P. Amo Sanchez, G. Lelli, M. Serio, A. Crescenzo, D. Ferdinando, N. Marco, S. Dmitrievski, M. Draco, D. Duchesneau, S. Dusini, J. Ebert, A. Ereditato, J. Favier, T. Ferber, R. A. Fini, T. Fukuda, A. Garfagnini, G. Giacomelli, C. Goellnitz, J. Goldberg, Y. Gornushkin, G. Grella, F. Grianti, A. M Guler, C. Gustavino, C. Hagner, K. Hakamata, T. Hara, T. Hayakawa, M. Hierholzer, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, M. Ishikawa, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, T. Katsuragawa, H. Kawahara, J. Kawada, J. H. Kim, S. H. Kim, M. Kimura, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, G. Mandrioli, J. Marteau, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, P. Migliozzi, S. Mikado, A. Minotti, M. Miyanishi, E. Miyashita, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. D. Park, I. G. Park, A. Pastore, L. Patrizii, E. Pennacchio, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, K. Pretzl, F. Pupilli, R. Rescigno, M. Roda, T. Roganova, H. Rokujo, G. Rosa, I. Rostovtseva, A. Rubbia, A. Russo, O. Ryazhskaya, O. Sato, Y. Sato, A. Schembri, W. Schmidt-Parzefall, I. Shakiryanova, T. Schcedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, T. Strau, P. Strolin, K. Suzuki, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, P. Tolun, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, J. Yoshida, M. Yoshimoto, Y. Zaitsev, S. Zemskova, A. Zghiche, DE LELLIS, Giovanni, Lauria, Adele, Montesi, MARIA CRISTINA, DI CRESCENZO, Antonia, DIP. DI FISICA, DIPARTIMENTO DI FISICA E ASTRONOMIA 'AUGUSTO RIGHI', Facolta' di SCIENZE MATEMATICHE FISICHE e NATURALI, Da definire, AREA MIN. 02 - Scienze fisiche, Agafonova, N, Aleksandrov, A, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Asada, T, Autiero, D, Badertscher, A, Dhahbi, A, Bender, D, Bertolin, A, Bozza, C, Brugnera, R, Brunetti, G, Büttner, B, Buontempo, S, Chaussard, L, Chernyavskiy, M, Chiarella, V, Chukanov, A, Consiglio, L, D’Ambrosio, N, Del Amo Sanchez, P, De Lellis, G, De Serio, M, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Ebert, J, Ereditato, A, Favier, J, Ferber, T, Fini, R, Fukuda, T, Garfagnini, A, Giacomelli, G, Goellnitz, C, Goldberg, J, Gornushkin, Y, Grella, G, Grianti, F, Guler, A, Gustavino, C, Hagner, C, Hakamata, K, Hara, T, Hayakawa, T, Hierholzer, M, Hollnagel, A, Hosseini, B, Ishida, H, Ishiguro, K, Ishikawa, M, Jakovcic, K, Jollet, C, Kamiscioglu, C, Kamiscioglu, M, Katsuragawa, T, Kawahara, H, Kawada, J, Kim, J, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Kodama, K, Komatsu, M, Kose, U, Kreslo, I, Lauria, A, Lenkeit, J, Ljubicic, A, Longhin, A, Loverre, P, Malgin, A, Mandrioli, G, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meregaglia, A, Migliozzi, P, Mikado, S, Minotti, A, Miyanishi, M, Miyashita, E, Monacelli, P, Montesi, M, Morishima, K, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Niwa, K, Ogawa, S, Okateva, N, Olshevsky, A, Omura, T, Ozaki, K, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Podgrudkov, D, Polukhina, N, Pozzato, M, Pretzl, K, Pupilli, F, Rescigno, R, Roda, M, Roganova, T, Rokujo, H, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Shakiryanova, I, Schcedrina, T, Sheshukov, A, Shibuya, H, Shiraishi, T, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Spinetti, M, Stanco, L, Starkov, N, Stellacci, S, Stipcevic, M, Strauss, T, Strolin, P, Suzuki, K, Takahashi, S, Tenti, M, Terranova, F, Tioukov, V, Tolun, P, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yoon, C, Yoshida, J, Yoshimoto, M, Zaitsev, Y, Zemskova, S, and Zghiche, A

Subjects
Nuclear and High Energy Physics, Particle physics, Neutrino detectors and telescopes, NEUTRINO OSCILLATIONS, 530 Physics, Physics::Instrumentation and Detectors, CERN Neutrinos to Gran Sasso, 01 natural sciences, NO, Nuclear physics, neutrino, 0103 physical sciences, Oscillation, Nuclear emulsion, Nuclear Experiment, 010306 general physics, Neutrino oscillation, Charged current, TAU LEPTON, Physics, Neutrino Detectors and Telescopes, 010308 nuclear & particles physics, NEUTRINO DETECTORS, Physique atomique et nucléaire, PARTICLE PHYSICS, NUCLEAR EMULSION, Physique des particules élémentaires, oscillation, neutrino detectors and telescopes, High Energy Physics::Experiment, Neutrino, Energy (signal processing), Beam (structure)
Abstract

The OPERA neutrino experiment is designed to perform the first observation of neutrino oscillations in direct appearance mode in the ν μ → ν τ channel, via the detection of the τ-leptons created in charged current ν τ interactions. The detector, located in the underground Gran Sasso Laboratory, consists of an emulsion/lead target with an average mass of about 1.2 kt, complemented by electronic detectors. It is exposed to the CERN Neutrinos to Gran Sasso beam, with a baseline of 730 km and a mean energy of 17 GeV. The observation of the first ν τ candidate event and the analysis of the 2008-2009 neutrino sample have been reported in previous publications. This work describes substantial improvements in the analysis and in the evaluation of the detection efficiencies and backgrounds using new simulation tools. The analysis is extended to a sub-sample of 2010 and 2011 data, resulting from an electronic detector-based pre-selection, in which an additional ν τ candidate has been observed. The significance of the two events in terms of a ν μ → ν τ oscillation signal is of 2.40σ., Journal of High Energy Physics, 2013 (11), ISSN:1126-6708, ISSN:1029-8479

Published
2013
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18. EUV radiation characteristics of a CO2 laser produced Xe plasma

Author

G. Soumagne, T. Ariga, Akira Endo, Y. Ueno, H. Hoshino, Hiroshi Komori, and Hakaru Mizoguchi

Subjects
Materials science, Physics and Astronomy (miscellaneous), business.industry, Plasma parameters, Amplifier, Extreme ultraviolet lithography, Energy conversion efficiency, General Engineering, General Physics and Astronomy, Plasma, Radiation, Laser, Pulsed laser deposition, law.invention, Optics, Physics::Plasma Physics, law, business
Abstract

A CO2 laser-driven Xe liquid jet plasma has been studied with respect to its usability as a EUV lithography light source. A short-pulse TEA-CO2 master oscillator power amplifier system (MOPA) and a pre-pulse Nd:YAG laser were used for the plasma generation. The dependence of EUV plasma parameters, e.g., conversion efficiency, plasma image, in-band and out-of-band spectra, on the delay time between the pre-pulse and the main pulse laser was investigated. A maximum conversion efficiency of 0.6% was obtained at a delay time of about 200 ns. In addition, characteristics of fast ions were measured by the time-of-flight method. The peak energy of the fast ion energy distribution decreased significantly at delay times longer than 200 ns. This result is very promising with respect to a collector mirror lifetime extension by magnetic field mitigation.

Published
2006
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19. Resonant behaviour of base-isolated high-rise buildings under long-period ground motions

Author

Izuru Takewaki, Yoshihiro Kanno, and T. Ariga

Subjects
Engineering, business.industry, Base (geometry), Resonance, Building and Construction, Structural engineering, Surface wave, Long period, Range (aeronautics), Architecture, Frequency characteristic, business, Seismology, Intensity (heat transfer), Civil and Structural Engineering, High rise
Abstract

SUMMARY The resonant behaviour of base-isolated high-rise buildings under long-period ground motions is investigated. The long-period ground motions are known to be induced by surface waves. While the acceleration amplitude of such long-period ground motion is small, the velocity amplitude is fairly large. It is expected that high-rise buildings and base-isolated buildings with long fundamental natural periods are greatly influenced by these long-period ground motions. Especially base-isolated high-rise buildings with friction-type bearings may have remarkable mechanical characteristics unfavourable for these long-period ground motions. The purpose of this paper is to reveal that the long-period ground motions recorded in Japan have the intensity to make base-isolated high-rise buildings in resonance with long-period components and that careful treatment is inevitable in the structural design of these base-isolated high-rise buildings. It is pointed out that the friction-type bearings are effective in general in avoiding the resonance with ground motions with a narrow-range frequency characteristic, but are dangerous for ground motions with a wide-range frequency characteristic in the long period range. Copyright © 2005 John Wiley & Sons, Ltd.

Published
2006
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20. Search for nu(mu) -> nu(tau) oscillation with the OPERA experiment in the CNGS beam

Author

N. AGAFONOVA, A. ALEKSANDROV, O. ALTINOK, A. ANOKHINA, S. AOKI, A. ARIGA, T. ARIGA, D. AUTIERO, A. BADERTSCHER, A. BAGULYA, A. BEN DHAHBI, A. BERTOLIN, C. BOZZA, T. BRUGIERE, R. BRUGNERA, F. BRUNET, G. BRUNETTI, S. BUONTEMPO, A. CAZES, L. CHAUSSARD, M. CHERNYAVSKIY, V. CHIARELLA, A. CHUKANOV, N. D’AMBROSIO, F. DAL CORSO, Y. DECLAIS, P. DEL AMO SANCHEZ, G. DE LELLIS, M. DE SERIO, F. DI CAPUA, A. DI CRESCENZO, D. DI FERDINANDO, N. DI MARCO, S. DMITRIEVSKI, M. DRACOS, D. DUCHESNEAU, S. DUSINI, T. DZHATDOEV, J. EBERT, O. EGOROV, R. ENIKEEV, A. EREDITATO, L. S. ESPOSITO, J. FAVIER, T. FERBER, R. A. FINI, D. FREKERS, T. FUKUDA, A. GARFAGNINI, C. GOLLNITZ, J. GOLDBERG, D. GOLUBKOV, L. GONCHAROVA, Y. GORNUSHKIN, G. GRELLA, F. GRIANTI, A. M. GULER, C. GUSTAVINO, C. HAGNER, K. HAMADA, T. HARA, M. HIERHOLZER, A. HOLLNAGEL, K. HOSHINO, M. IEVA, H. ISHIDA, K. ISHIGURO, K. JAKOVCIC, C. JOLLET, F. JUGET, M. KAMISCIOGLU, S. H. KIM, M. KIMURA, N. KITAGAWA, B. KLICEK, J. KNUESEL, K. KODAMA, K. KOGISO, M. KOMATSU, U. KOSE, I. KRESLO, C. LAZZARO, J. LENKEIT, I. LIPPI, A. LJUBICIC, A. LONGHIN, P. LOVERRE, G. LUTTER, A. MALGIN, G. MANDRIOLI, K. MANNAI, J. MARTEAU, T. MATSUO, V. MATVEEV, MAURI, NICOLETTA, E. MEDINACELI, F. MEISEL, A. MEREGAGLIA, P. MIGLIOZZI, S. MIKADO, S. MIYAMOTO, P. MONACELLI, K. MORISHIMA, U. MOSER, M. T. MUCIACCIA, N. NAGANAWA, T. NAKA, M. NAKAMURA, T. NAKANO, Y. NAKATSUKA, D. NAUMOV, V. NIKITINA, K. NIWA, Y. NONOYAMA, S. OGAWA, N. OKATEVA, A. OLSHEVSKY, T. OMURA, O. PALAMARA, M. PANICCIA, A. PAOLONI, B. D. PARK, I. G. PARK, A. PASTORE, L. PATRIZII, E. PENNACCHIO, H. PESSARD, C. PISTILLO, N. POLUKHINA, K. PRETZL, F. PUPILLI, R. RESCIGNO, T. ROGANOVA, H. ROKUJO, G. ROMANO, G. ROSA, I. ROSTOVTSEVA, A. RUBBIA, A. RUSSO, V. RYASNY, O. RYAZHSKAYA, O. SATO, Y. SATO, A. SCHEMBRI, W. SCHMIDT PARZEFALL, L. SCOTTO LAVINA, A. SHESHUKOV, H. SHIBUYA, G. SHOZIYOEV, S. SIMONE, C. SIRIGNANO, G. SIRRI, J. S. SONG, M. SPINETTI, L. STANCO, N. STARKOV, M. STELLACCI, M. STIPCEVIC, T. STRAUSS, P. STROLIN, K. SUZUKI, S. TAKAHASHI, M. TENTI, F. TERRANOVA, I. TEZUKA, V. TIOUKOV, P. TOLUN, A. TRABELSI, T. TRAN, S. TUFANLI, P. VILAIN, M. VLADIMIROV, L. VOTANO, J. L. VUILLEUMIER, G. WILQUET, B. WONSAK, V. YAKUSHEV, C. S. YOON, J. YOSHIDA, T. YOSHIOKA, Y. ZAITSEV, S. ZEMSKOVA, A. ZGHICHE, R. ZIMMERMANN, GIACOMELLI, GIORGIO MARIA, GIORGINI, MIRIAM, POZZATO, MICHELE, SIOLI, MAXIMILIANO, Agafonova, N, Aleksandrov, A, Altinok, O, Anokhina, A, Aoki, S, Ariga, A, Ariga, T, Autiero, D, Badertscher, A, Bagulya, A, Ben Dhahbi, A, Bertolin, A, Bozza, C, Brugière, T, Brugnera, R, Brunet, F, Brunetti, G, Buontempo, S, Cazes, A, Chaussard, L, Chernyavskiy, M, Chiarella, V, Chukanov, A, D'Ambrosio, N, Dal Corso, F, Déclais, Y, del Amo Sanchez, P, De Lellis, G, De Serio, M, Di Capua, F, Di Crescenzo, A, Di Ferdinando, D, Di Marco, N, Dmitrievski, S, Dracos, M, Duchesneau, D, Dusini, S, Dzhatdoev, T, Ebert, J, Egorov, O, Enikeev, R, Ereditato, A, Esposito, L, Favier, J, Ferber, T, Fini, R, Frekers, D, Fukuda, T, Garfagnini, A, Giacomelli, G, Giorgini, M, Göllnitz, C, Goldberg, J, Golubkov, D, Goncharova, L, Gornushkin, Y, Grella, G, Grianti, F, Guler, A, Gustavino, C, Hagner, C, Hamada, K, Hara, T, Hierholzer, M, Hollnagel, A, Hoshino, K, Ieva, M, Ishida, H, Ishiguro, K, Jakovcic, K, Jollet, C, Juget, F, Kamiscioglu, M, Kim, S, Kimura, M, Kitagawa, N, Klicek, B, Knuesel, J, Kodama, K, Kogiso, K, Komatsu, M, Kose, U, Kreslo, I, Lazzaro, C, Lenkeit, J, Lippi, I, Ljubicic, A, Longhin, A, Loverre, P, Lutter, G, Malgin, A, Mandrioli, G, Mannai, K, Marteau, J, Matsuo, T, Matveev, V, Mauri, N, Medinaceli, E, Meisel, F, Meregaglia, A, Migliozzi, P, Mikado, S, Miyamoto, S, Monacelli, P, Morishima, K, Moser, U, Muciaccia, M, Naganawa, N, Naka, T, Nakamura, M, Nakano, T, Nakatsuka, Y, Naumov, D, Nikitina, V, Niwa, K, Nonoyama, Y, Ogawa, S, Okateva, N, Olshevsky, A, Omura, T, Palamara, O, Paniccia, M, Paoloni, A, Park, B, Park, I, Pastore, A, Patrizii, L, Pennacchio, E, Pessard, H, Pistillo, C, Polukhina, N, Pozzato, M, Pretzl, K, Pupilli, F, Rescigno, R, Roganova, T, Rokujo, H, Romano, G, Rosa, G, Rostovtseva, I, Rubbia, A, Russo, A, Ryasny, V, Ryazhskaya, O, Sato, O, Sato, Y, Schembri, A, Schmidt Parzefall, W, Scotto Lavina, L, Sheshukov, A, Shibuya, H, Shoziyoev, G, Simone, S, Sioli, M, Sirignano, C, Sirri, G, Song, J, Spinetti, M, Stanco, L, Starkov, N, Stellacci, M, Stipcevic, M, Strauss, T, Strolin, P, Suzuki, K, Takahashi, S, Tenti, M, Terranova, F, Tezuka, I, Tioukov, V, Tolun, P, Trabelsi, A, Tran, T, Tufanli, S, Vilain, P, Vladimirov, M, Votano, L, Vuilleumier, J, Wilquet, G, Wonsak, B, Yakushev, V, Yoon, C, Yoshida, J, Yoshioka, T, Zaitsev, Y, Zemskova, S, Zghiche, A, Zimmermann, R, N. AGAFONOVA, A. ALEKSANDROV, O. ALTINOK, A. ANOKHINA, S. AOKI, A. ARIGA, T. ARIGA, D. AUTIERO, A. BADERTSCHER, A. BAGULYA, A. BEN DHAHBI, A. BERTOLIN, C. BOZZA, T. BRUGIERE, R. BRUGNERA, F. BRUNET, G. BRUNETTI, S. BUONTEMPO, A. CAZES, L. CHAUSSARD, M. CHERNYAVSKIY, V. CHIARELLA, A. CHUKANOV, N. D’AMBROSIO, F. DAL CORSO, Y. DECLAIS, P. DEL AMO SANCHEZ, G. DE LELLIS, M. DE SERIO, F. DI CAPUA, A. DI CRESCENZO, D. DI FERDINANDO, N. DI MARCO, S. DMITRIEVSKI, M. DRACOS, D. DUCHESNEAU, S. DUSINI, T. DZHATDOEV, J. EBERT, O. EGOROV, R. ENIKEEV, A. EREDITATO, L. S. ESPOSITO, J. FAVIER, T. FERBER, R. A FINI, D. FREKERS, T. FUKUDA, A. GARFAGNINI, G. GIACOMELLI, M. GIORGINI, C. GOLLNITZ, J. GOLDBERG, D. GOLUBKOV, L. GONCHAROVA, Y. GORNUSHKIN, G. GRELLA, F. GRIANTI, A. M. GULER, C. GUSTAVINO, C. HAGNER, K. HAMADA, T. HARA, M. HIERHOLZER, A. HOLLNAGEL, K. HOSHINO, M. IEVA, H. ISHIDA, K. ISHIGURO, K. JAKOVCIC, C. JOLLET, F. JUGET, M. KAMISCIOGLU, S. H. KIM, M. KIMURA, N. KITAGAWA, B. KLICEK, J. KNUESEL, K. KODAMA, K. KOGISO, M. KOMATSU, U. KOSE, I. KRESLO, C. LAZZARO, J. LENKEIT, I. LIPPI, A. LJUBICIC, A. LONGHIN, P. LOVERRE, G. LUTTER, A. MALGIN, G. MANDRIOLI, K. MANNAI, J. MARTEAU, T. MATSUO, V. MATVEEV, N. MAURI, E. MEDINACELI, F. MEISEL, A. MEREGAGLIA, P. MIGLIOZZI, S. MIKADO, S. MIYAMOTO, P. MONACELLI, K. MORISHIMA, U. MOSER, M. T. MUCIACCIA, N. NAGANAWA, T. NAKA, M. NAKAMURA, T. NAKANO, Y. NAKATSUKA, D. NAUMOV, V. NIKITINA, K. NIWA, Y. NONOYAMA, S. OGAWA, N. OKATEVA, A. OLSHEVSKY, T. OMURA, O. PALAMARA, M. PANICCIA, A. PAOLONI, B. D. PARK, I. G. PARK, A. PASTORE, L. PATRIZII, E. PENNACCHIO, H. PESSARD, C. PISTILLO, N. POLUKHINA, M. POZZATO, K. PRETZL, F. PUPILLI, R. RESCIGNO, T. ROGANOVA, H. ROKUJO, G. ROMANO, G. ROSA, I. ROSTOVTSEVA, A. RUBBIA, A. RUSSO, V. RYASNY, O. RYAZHSKAYA, O. SATO, Y. SATO, A. SCHEMBRI, W. SCHMIDT-PARZEFALL, L. SCOTTO LAVINA, A. SHESHUKOV, H. SHIBUYA, G. SHOZIYOEV, S. SIMONE, M. SIOLI, C. SIRIGNANO, G. SIRRI, J. S. SONG, M. SPINETTI, L. STANCO, N. STARKOV, M. STELLACCI, M. STIPCEVIC, T. STRAUSS, P. STROLIN, K. SUZUKI, S. TAKAHASHI, M. TENTI, F. TERRANOVA, I. TEZUKA, V. TIOUKOV, P. TOLUN, A. TRABELSI, T. TRAN, S. TUFANLI, P. VILAIN, M. VLADIMIROV, L. VOTANO, J. L. VUILLEUMIER, G. WILQUET, B. WONSAK, V. YAKUSHEV, C. S. YOON, J. YOSHIDA, T. YOSHIOKA, Y. ZAITSEV, S. ZEMSKOVA, A. ZGHICHE, and R. ZIMMERMANN

Subjects
FIS/01 - FISICA SPERIMENTALE, neutrino physics, NEUTRINO, FLAVOR OSCILLATIONS, NUCLEAR EMULSIONS, TAU LEPTON
Abstract

The OPERA neutrino experiment in the underground Gran Sasso Laboratory (LNGS) was designed to perform the first detection of neutrino oscillations in direct appearance mode in the vμ→ v τ channel, the v τ signature being the identification of the τ -lepton created in its charged current interaction. The hybrid apparatus consists of a large mass emulsion film/lead target complemented by electronic detectors. Placed in the LNGS, it is exposed to the high-energy long-baseline CERN Neutrino beam to Gran Sasso (CNGS) 730 km away from the neutrino source. The observation of a first v τ candidate event was reported in 2010. In this paper, we discuss the result of the analysis of the data taken during the first two years of operation (2008-2009) underlining the major improvements brought to the analysis chain and to the Monte Carlo simulations. The statistical significance of the one event observed so far is then evaluated to 95%. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.

Published
2012

21. An Ultra-Line-Narrowed High-Power<tex>$hboxF_2$</tex>Laser for Dioptric Design Microlithography Exposure Tools

Author

T. Ariga and H. Mizoguchi

Subjects
Range (particle radiation), Materials science, business.industry, Amplifier, Laser, Atomic and Molecular Physics, and Optics, law.invention, Power (physics), Full width at half maximum, Laser linewidth, Optics, law, Laser power scaling, Electrical and Electronic Engineering, business, Energy (signal processing)
Abstract

An ultra-line-narrowed high-power and high-repetition rate F/sub 2/ laser system has been developed for 157-nm microlithography exposure tools with dioptric projection design. The injection locked system (ILS) consists of a low-power seed laser with ultra-narrow spectral linewidth and a high-gain amplifier. More than 25-W output power, a spectral linewidth below 0.2 pm full-width at half-maximum (FWHM) and an energy stability (3-sigma) below 10% have been obtained at a 5-kHz repetition rate and for a delay time range between the two laser stages of about 15 ns. Directly compared with a master oscillator power amplifier system, the ILS had a better performance related to output energy, energy stability, and laser pulse duration.

Published
2004
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23. Spectral dynamics of narrow-band F2 laser for optical lithography

Author

T. Ariga, Hiroki Tanaka, K. Hotta, R. Nohdomi, Tatsuo Okada, H. Mizoguchi, and Akihiko Takahashi

Subjects
Quantum optics, Materials science, Physics and Astronomy (miscellaneous), Computer simulation, business.industry, General Engineering, Time evolution, General Physics and Astronomy, Laser, law.invention, Narrow band, Optics, law, Code (cryptography), Emission spectrum, Photolithography, business
Abstract

We describe the spectral dynamics of a line-narrowed F2 laser, based on numerical simulation by a newly developed simulation code. The results were compared with the experimental results and it was found that the code could predict well the performance of a line-narrowed operation of the F2 laser. The code was also used to obtain a guideline for the optimized operation of an injection-seeded F2 laser system. In addition, a new spectral narrowing technique for the F2 laser has been proposed and its effectiveness was evaluated by the simulation code.

Published
2003
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24. Observation of a first ντ candidate event in the OPERA experiment in the CNGS beam

Author

N. AGAFONOVA, A. ALEKSANDROV, O. ALTINOK, M. AMBROSIO, A. ANOKHINA, S. AOKI, A. ARIGA, T. ARIGA, D. AUTIERO, A. BADERTSCHER, A. BAGULYA, A. BENDHABI, A. BERTOLIN, M. BESNIER, D. BICK, V. BOYARKIN, C. BOZZA, T. BRUGIERE, R. BRUGNERA, F. BRUNET, G. BRUNETTI, S. BUONTEMPO, A. CAZES, L. CHAUSSARD, M. CHERNYAVSKY, V. CHIARELLA, N. CHON SEN, A. CHUKANOV, R. CIESIELSKI, F. DAL CORSO, N. D’AMBROSIO, Y. DECLAIS, P. DEL AMO SANCHEZ, G. DE LELLIS, M. DE SERIO, F. DI CAPUA, A. DI CRESCENZO, D. DI FERDINANDO, N. DI MARCO, A. DI GIOVANNI, S. DMITRIEVSKY, M. DRACOS, D. DUCHESNEAU, S. DUSINI, T. DZHATDOEV, J. EBERT, O. EGOROV, R. ENIKEEV, A. EREDITATO, L. S. ESPOSITO, J. FAVIER, T. FERBER, R. A. FINI, D. FREKERS, T. FUKUDA, V. GALKIN, A. GARFAGNINI, J. GOLDBERG, C. GOLLNITZ, D. GOLUBKOV, L. GONCHAROVA, Y. GORNUSHKIN, G. GRELLA, F. GRIANTI, A. M. GULER, C. GUSTAVINO, C. HAGNER, K. HAMADA, T. HARA, M. HIERHOLZER, K. HOSHINO, M. IEVA, H. ISHIDA, K. ISHIGURO, K. JAKOVCIC, C. JOLLET, F. JUGET, M. KAMISCIOGLU, J. KAWADA, M. KAZUYAMA, S. H. KIM, M. KIMURA, N. KITAGAWA, B. KLICEK, J. KNUESEL, K. KODAMA, M. KOMATSU, U. KOSE, I. KRESLO, H. KUBOTA, C. LAZZARO, J. LENKEIT, I. LIPPI, A. LJUBICIC, A. LONGHIN, G. LUTTER, A. MALGIN, G. MANDRIOLI, K. MANNAI, A. MAROTTA, J. MARTEAU, T. MATSUO, V. MATVEEV, MAURI, NICOLETTA, E. MEDINACELI, F. MEISEL, A. MEREGAGLIA, P. MIGLIOZZI, S. MIKADO, S. MIYAMOTO, P. MONACELLI, K. MORISHIMA, U. MOSER, M. T. MUCIACCIA, N. NAGANAWA, T. NAKA, M. NAKAMURA, T. NAKANO, Y. NAKATSUKA, D. NAUMOV, V. NIKITINA, K. NIWA, Y. NONOYAMA, S. OGAWA, A. OLCHEVSKY, T. OMURA, G. ORLOVA, V. OSEDLO, M. PANICCIA, A. PAOLONI, B. D. PARK, I. G. PARK, A. PASTORE, L. PATRIZII, E. PENNACCHIO, H. PESSARD, V. PILIPENKO, C. PISTILLO, N. POLUKHINA, K. PRETZL, P. PUBLICHENKO, F. PUPILLI, J. P. REPELLIN, R. RESCIGNO, T. ROGANOVA, H. ROKUJO, G. ROMANO, G. ROSA, I. ROSTOVTSEVA, A. RUBBIA, A. RUSSO, V. RYASNY, O. RYAZHSKAYA, Y. SAKATANI, O. SATO, Y. SATO, A. SCHEMBRI, W. SCHMIDT PARZEFALL, H. SCHROEDER, L. SCOTTO LAVINA, A. SHESHUKOV, H. SHIBUYA, S. SIMONE, C. SIRIGNANO, G. SIRRI, J. S. SONG, M. SPINETTI, L. STANCO, N. STARKOV, M. STIPCEVIC, T. STRAUSS, P. STROLIN, K. SUZUKI, S. TAKAHASHI, M. TENTI, F. TERRANOVA, I. TEZUKA, V. TIOUKOV, P. TOLUN, A. TRABELSI, T. TRAN, S. TUFANLI, P. VILAIN, M. VLADIMIROV, L. VOTANO, J. L. VUILLEUMIER, G. WILQUET, B. WONSAK, V. YAKUSHEV, C. S. YOON, J. YOSHIDA, T. YOSHIOKA, Y. ZAITSEV, S. ZEMSKOVA, A. ZGHICHE, R. ZIMMERMANN, GIACOMELLI, GIORGIO MARIA, GIORGINI, MIRIAM, POZZATO, MICHELE, SIOLI, MAXIMILIANO, N. AGAFONOVA, A. ALEKSANDROV, O. ALTINOK, M. AMBROSIO, A. ANOKHINA, S. AOKI, A. ARIGA, T. ARIGA, D. AUTIERO, A. BADERTSCHER, A. BAGULYA, A. BENDHABI, A. BERTOLIN, M. BESNIER, D. BICK, V. BOYARKIN, C. BOZZA, T. BRUGIERE, R. BRUGNERA, F. BRUNET, G. BRUNETTI, S. BUONTEMPO, A. CAZES, L. CHAUSSARD, M. CHERNYAVSKY, V. CHIARELLA, N. CHON-SEN, A. CHUKANOV, R. CIESIELSKI, F.DAL CORSO, N. D’AMBROSIO, Y. DECLAIS, P. DEL AMO SANCHEZ, G. DE LELLIS, M. DE SERIO, F. DI CAPUA, A. DI CRESCENZO, D. DI FERDINANDO, N. DI MARCO, A. DI GIOVANNI, S. DMITRIEVSKY, M. DRACOS, D. DUCHESNEAU, S. DUSINI, T. DZHATDOEV, J. EBERT, O. EGOROV, R. ENIKEEV, A. EREDITATO, L.S. ESPOSITO, J. FAVIER, T. FERBER, R.A. FINI, D. FREKERS, T. FUKUDA, V. GALKIN, A. GARFAGNINI, G. GIACOMELLI, M. GIORGINI, J. GOLDBERG, C. GOLLNITZ, D. GOLUBKOV, L. GONCHAROVA, Y. GORNUSHKIN, G. GRELLA, F. GRIANTI, A.M. GULER, C. GUSTAVINO, C. HAGNER, K. HAMADA, T. HARA, M. HIERHOLZER, K. HOSHINO, M. IEVA, H. ISHIDA, K. ISHIGURO, K. JAKOVCIC, C. JOLLET, F. JUGET, M. KAMISCIOGLU, J. KAWADA, M. KAZUYAMA, S.H. KIM, M. KIMURA, N. KITAGAWA, B. KLICEK, J. KNUESEL, K. KODAMA, M. KOMATSU, U. KOSE, I. KRESLO, H. KUBOTA, C. LAZZARO, J. LENKEIT, I. LIPPI, A. LJUBICIC, A. LONGHIN, G. LUTTER, A. MALGIN, G. MANDRIOLI, K. MANNAI, A. MAROTTA, J. MARTEAU, T. MATSUO, V. MATVEEV, N. MAURI, E. MEDINACELI, F. MEISEL, A. MEREGAGLIA, P. MIGLIOZZI, S. MIKADO, S. MIYAMOTO, P. MONACELLI, K. MORISHIMA, U. MOSER, M.T. MUCIACCIA, N. NAGANAWA, T. NAKA, M. NAKAMURA, T. NAKANO, Y. NAKATSUKA, D. NAUMOV, V. NIKITINA, K. NIWA, Y. NONOYAMA, S. OGAWA, A. OLCHEVSKY, T. OMURA, G. ORLOVA, V. OSEDLO, M. PANICCIA, A. PAOLONI, B.D. PARK, I.G. PARK, A. PASTORE, L. PATRIZII, E. PENNACCHIO, H. PESSARD, V. PILIPENKO, C. PISTILLO, N. POLUKHINA, M. POZZATO, K. PRETZL, P. PUBLICHENKO, F. PUPILLI, J.P. REPELLIN, R. RESCIGNO, T. ROGANOVA, H. ROKUJO, G. ROMANO, G. ROSA, I. ROSTOVTSEVA, A. RUBBIA, A. RUSSO, V. RYASNY, O. RYAZHSKAYA, Y. SAKATANI, O. SATO, Y. SATO, A. SCHEMBRI, W. SCHMIDT-PARZEFALL, H. SCHROEDER, L. SCOTTO LAVINA, A. SHESHUKOV, H. SHIBUYA, S. SIMONE, M. SIOLI, C. SIRIGNANO, G. SIRRI, J.S. SONG, M. SPINETTI, L. STANCO, N. STARKOV, M. STIPCEVIC, T. STRAUSS, P. STROLIN, K. SUZUKI, S. TAKAHASHI, M. TENTI, F. TERRANOVA, I. TEZUKA, V. TIOUKOV, P. TOLUN, A. TRABELSI, T. TRAN, S. TUFANLI, P. VILAIN, M. VLADIMIROV, L. VOTANO, J.-L. VUILLEUMIER, G. WILQUET, B. WONSAK, V. YAKUSHEV, C.S. YOON, J. YOSHIDA, T. YOSHIOKA, Y. ZAITSEV, S. ZEMSKOVA, A. ZGHICHE, and R. ZIMMERMANN

Subjects
NEUTRINO OSCILLATIONS, Physics::Instrumentation and Detectors, PARTICLE PHYSICS, High Energy Physics::Experiment, Nuclear Experiment, NUCLEAR EMULSIONS
Abstract

First observation of neutrino oscillation in appearance mode

Published
2010

25. Autosomal-dominant Hypoplastic Form of Amelogenesis Imperfecta Caused by an Enamelin Gene Mutation at the Exon-Intron Boundary

Author

Tetsuo Shirakawa, T. Ariga, Haruhisa Oguchi, Miyuki Kida, and Y. Sakiyama

Subjects
0301 basic medicine, Proband, Male, Candidate gene, Amelogenesis Imperfecta, DNA Mutational Analysis, Molecular Sequence Data, Locus (genetics), Gene mutation, Biology, 03 medical and health sciences, Exon, 0302 clinical medicine, Dental Enamel Proteins, medicine, Humans, Amelogenesis imperfecta, Child, General Dentistry, Polymorphism, Single-Stranded Conformational, Genes, Dominant, Genetics, Base Sequence, Guanosine, FAM83H, 030206 dentistry, Exons, medicine.disease, Molecular biology, Introns, Pedigree, 030104 developmental biology, Codon, Nonsense, Female, ENAM, Chromosomes, Human, Pair 4
Abstract

Amelogenesis imperfecta (AI) is currently classified into 14 distinct subtypes based on various phenotypic criteria; however, the gene responsible for each phenotype has not been defined. We performed molecular genetic studies on a Japanese family with a possible autosomal-dominant form of AI. Previous studies have mapped an autosomal-dominant human AI locus to chromosome 4q11-q21, where two candidate genes, ameloblastin and enamelin, are located. We studied AI patients in this family, focusing on these genes, and found a mutation in the enamelin gene. The mutation detected was a heterozygous, single-G deletion within a series of 7 G residues at the exon 9-intron 9 boundary of the enamelin gene. The mutation was detected only in AI patients in the family and was not detected in other unaffected family members or control individuals. The male proband and his brother showed hypoplastic enamel in both their deciduous and permanent teeth, and their father showed local hypoplastic defects in the enamel of his permanent teeth. The clinical phenotype of these patients is similar to that of the first report of AI caused by an enamelin gene mutation. Thus, heterogeneous mutations in the enamelin gene are responsible for an autosomal-dominant hypoplastic form of AI.

Published
2002
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26. Effect of Copper-based Fillers Composition On Spreading and Wetting Behaviour

Author

Tedi Kurniawan, Mahadzir Ishak, W. N. W. M. N. Hissyam, A. M. Halil, and T Ariga

Subjects
010302 applied physics, Materials science, Alloy, chemistry.chemical_element, 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, 01 natural sciences, Copper, Contact angle, Sessile drop technique, chemistry, Filler (materials), 0103 physical sciences, engineering, Brazing, Wetting, Composite material, 0210 nano-technology, Base metal
Abstract

Wetting and spreading of molten brazing filler material are important factors that influence the brazing ability of a joint to be brazed. Several investigations into the wetting ability of a brazing filler alloy and its spreading area in the molten state, in addition to effects of brazing temperature on the contact angle, have been carried out. Generally, the composition of copper-based filler and temperature affect spreading of molten brazing filler material during brazing. Wetting by and interfacial reactions of the molten brazing filler material with the metallic substrate, especially, affect strongly the spreading of the filler material. In this study, the effects of filler composition and brazing temperature on the spreading of molten brazing filler metallic alloys were investigated. MBF 2005 (Cu, 5.7wt.%Ni, 9.7wt.%Sn, 7.0wt.%P), MBF 2002 (Cu, 9.9wt.%Ni, 4.0wt.%Sn, 7.8wt.%P) and VZ 2250 (Cu, 7.0wt.%Ni, 9.3wt.%Sn, 6.3wt.%P) alloys were used as brazing filler materials. Pure copper block and a rectangular plate were employed as the base metal. Brazing filler material and metallic base plate were first washed with acetone. Brazing was performed at 750°C and 800°C under Ar gas for 30 minutes using an electrically heated furnace, after which, the original spreading area, defined as the sessile drop area, and the apparent spreading area were both evaluated. It was observed that the spreading area and wetting angle influenced by the composition of copper-based filler.

Published
2017
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27. Measurement of the TeV atmospheric muon charge ratio with the complete OPERA data set

Author

N. Agafonova, A. Aleksandrov, A. Anokhina, S. Aoki, A. Ariga, T. Ariga, D. Bender, A. Bertolin, C. Bozza, R. Brugnera, A. Buonaura, S. Buontempo, B. Büttner, M. Chernyavsky, A. Chukanov, L. Consiglio, N. D’Ambrosio, G. De Lellis, M. De Serio, P. Del Amo Sanchez, A. Di Crescenzo, D. Di Ferdinando, N. Di Marco, S. Dmitrievski, M. Dracos, D. Duchesneau, S. Dusini, T. Dzhatdoev, J. Ebert, A. Ereditato, R. A. Fini, T. Fukuda, G. Galati, A. Garfagnini, G. Giacomelli, C. Göllnitz, J. Goldberg, Y. Gornushkin, G. Grella, M. Guler, C. Gustavino, C. Hagner, T. Hara, A. Hollnagel, B. Hosseini, H. Ishida, K. Ishiguro, K. Jakovcic, C. Jollet, C. Kamiscioglu, M. Kamiscioglu, J. Kawada, J. H. Kim, S. H. Kim, N. Kitagawa, B. Klicek, K. Kodama, M. Komatsu, U. Kose, I. Kreslo, A. Lauria, J. Lenkeit, A. Ljubicic, A. Longhin, P. Loverre, A. Malgin, M. Malenica, G. Mandrioli, T. Matsuo, V. Matveev, N. Mauri, E. Medinaceli, A. Meregaglia, S. Mikado, P. Monacelli, M. C. Montesi, K. Morishima, M. T. Muciaccia, N. Naganawa, T. Naka, M. Nakamura, T. Nakano, Y. Nakatsuka, K. Niwa, S. Ogawa, N. Okateva, A. Olshevsky, T. Omura, K. Ozaki, A. Paoloni, B. D. Park, I. G. Park, L. Pasqualini, A. Pastore, L. Patrizii, H. Pessard, C. Pistillo, D. Podgrudkov, N. Polukhina, M. Pozzato, F. Pupilli, M. Roda, H. Rokujo, T. Roganova, G. Rosa, O. Ryazhskaya, O. Sato, A. Schembri, I. Shakiryanova, T. Shchedrina, A. Sheshukov, H. Shibuya, T. Shiraishi, G. Shoziyoev, S. Simone, M. Sioli, C. Sirignano, G. Sirri, M. Spinetti, L. Stanco, N. Starkov, S. M. Stellacci, M. Stipcevic, P. Strolin, S. Takahashi, M. Tenti, F. Terranova, V. Tioukov, S. Tufanli, P. Vilain, M. Vladimirov, L. Votano, J. L. Vuilleumier, G. Wilquet, B. Wonsak, C. S. Yoon, S. Zemskova, and A. Zghiche

Subjects
Physics, Particle physics, Muon, Physics and Astronomy (miscellaneous), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Detector, Cosmic ray, 01 natural sciences, symbols.namesake, Pion, Magnet, 0103 physical sciences, symbols, Feynman diagram, High Energy Physics::Experiment, 010306 general physics, Nucleon, Engineering (miscellaneous), Scaling
Abstract

The OPERA detector, designed to search for $\nu_{\mu} \to \nu_{\tau}$ oscillations in the CNGS beam, is located in the underground Gran Sasso laboratory, a privileged location to study TeV-scale cosmic rays. For the analysis here presented, the detector was used to measure the atmospheric muon charge ratio in the TeV region. OPERA collected charge-separated cosmic ray data between 2008 and 2012. More than 3 million atmospheric muon events were detected and reconstructed, among which about 110000 multiple muon bundles. The charge ratio $R_{\mu} \equiv N_{\mu^+}/N_{\mu^-}$ was measured separately for single and for multiple muon events. The analysis exploited the inversion of the magnet polarity which was performed on purpose during the 2012 Run. The combination of the two data sets with opposite magnet polarities allowed minimizing systematic uncertainties and reaching an accurate determination of the muon charge ratio. Data were fitted to obtain relevant parameters on the composition of primary cosmic rays and the associated kaon production in the forward fragmentation region. In the surface energy range 1-20 TeV investigated by OPERA, $R_{\mu}$ is well described by a parametric model including only pion and kaon contributions to the muon flux, showing no significant contribution of the prompt component. The energy independence supports the validity of Feynman scaling in the fragmentation region up to $200$ TeV/nucleon primary energy.

Published
2014
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28. The AEgIS Experiment

Author

A. Knecht, S. Aghion, O. Ahlxe9n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Brxe4unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jxf8rgensen, T. Kaltenbacher, and J. Kawada

Published
2014

29. Measuring the gravitational free-fall of antihydrogen

Author

J. Storey, S. Aghion, O. Ahlxe9n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Brxe4unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jxf8rgensen, T. Kaltenbacher, and J. Kawada

Published
2014

30. Measuring with , progress and perspectives

Author

D. Krasnickxfd, S. Aghion, O. Ahlxe9n, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, K. Berggren, G. Bonomi, P. Brxe4unig, J. Bremer, R. S. Brusa, L. Cabaret, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Haider, T. Huse, E. Jordan, L. V. Jxf8rgensen, T. Kaltenbacher, and J. Kawada

Published
2014

31. AE$\overline {\rm{g}}$IS Experiment: Measuring the accelerationgof the earth’s gravitational field on antihydrogen beam

Author

M. A. Subieta Vasquez, S. Aghion, O. Ahlén, C. Amsler, A. Ariga, T. Ariga, A. S. Belov, G. Bonomi, P. Bräunig, J. Bremer, R. S. Brusa, L. Cabaret, M. Caccia, C. Canali, R. Caravita, F. Castelli, G. Cerchiari, S. Cialdi, D. Comparat, G. Consolati, L. Dassa, J. H. Derking, S. Di Domizio, L. Di Noto, M. Doser, A. Dudarev, A. Ereditato, R. Ferragut, A. Fontana, P. Genova, M. Giammarchi, A. Gligorova, S. N. Gninenko, S. Heider, S. D. Hogan, T. Huse, E. Jordan, L. V. Jørgensen, T. Kaltenbacher, J. Kawada, A. Kellerbauer, M. Kimura, A. Knecht, D. Krasnický, V. Lagomarsino, S. Mariazzi, V. A. Matveev, F. Merkt, F. Moia, G. Nebbia, P. Nédélec, M. K. Oberthaler, N. Pacifico, V. Petráček, C. Pistilo, F. Prelz, M. Prevedelli, C. Regenfus, C. Ricardi, O. Røhne, A. Rotondi, H. Sandaker, P. Scampoli, J. Storey, M. Špaček, G. Testera, D. Trezzi, R. Vaccarone, F. Villa, and S. Zavatarelli

Subjects
Physics, Particle physics, QC1-999, Electron, Gravitational acceleration, 7. Clean energy, Nuclear physics, Antiproton Decelerator, Deflection (physics), Antiproton, Antimatter, Physics::Accelerator Physics, Physics::Atomic Physics, Antihydrogen, Beam (structure)
Abstract

The AEg¯ $\overline {\rm{g}}$IS experiment [1] aims at directly measuring the gravitational acceleration g on a beam of cold antihydrogen (H¯$\overline {\rm{H}}$) to a precision of 1%, performing the first test with antimatter of the (WEP) Weak Equivalence Principle. The experimental apparatus is sited at the Antiproton Decelerator (AD) at CERN, Geneva, Switzerland. After production by mixing of antiprotons with Rydberg state positronium atoms (Ps), the H¯$\overline {\rm{H}}$ atoms will be driven to fly horizontally with a velocity of a few 100 ms−1 for a path length of about 1 meter. The small deflection, few tens of μm, will be measured using two material gratings (of period ∼ 80 μm) coupled to a position-sensitive detector working as a moiré deflectometer similarly to what has been done with matter atoms [2]. The shadow pattern produced by the H¯$\overline {\rm{H}}$ beam will then be detected by reconstructing the annihilation points with a spatial resolution (∼ 2 μm) of each antiatom at the end of the flight path by the sensitive-position detector. During 2012 the experimental apparatus has been commissioned with antiprotons and positrons. Since the AD will not be running during 2013,during the refurbishment of the CERN accelerators, the experiment is currently working with positrons, electrons and protons, in order to prepare the way for the antihydrogen production in late 2014.

Published
2014

32. Protective effects of murine recombinant interferon-β administered by intravenous, intramuscular or subcutaneous route on mouse hepatitis virus infection

Author

T. Ariga, T. Kikuchi, F. Taguchi, S. Matsuyama, S. Sone, S. Henmi, and N. Ichihara

Subjects
Male, Coronaviridae Infections, Injections, Subcutaneous, Injections, Intramuscular, Virus, Mice, Route of administration, Mouse hepatitis virus, Nidovirales, Virology, Animals, Medicine, Interferon gamma, Pharmacology, Hepatitis, Mice, Inbred BALB C, biology, business.industry, biology.organism_classification, medicine.disease, Recombinant Proteins, Liver, Hepatitis, Viral, Animal, Injections, Intravenous, Interferon Type I, Immunology, Viral disease, business, Viral hepatitis, medicine.drug
Abstract

The significance of the route for administration of murine recombinant interferon-beta (IFN-beta) for inducing its therapeutic effects has been studied. BALB/c mice were daily injected intravenously, intramuscularly or subcutaneously with 1.5x10(3), 1. 5x10(4), or 1.5x10(5) IU of IFN-beta, from one day before to 8th day after mouse hepatitis virus (MHV-2) challenge. All mice received IFN-beta survived significantly longer than those without IFN. In the liver of those IFN-treated mice, viral growth and the histopathological damages were extremely alleviated. These results suggest that, irrespective of the differences in the route of administration, IFN-beta markedly suppressed viral activity when its administration was started prior to viral infection. For clinical use, however, further studies are needed on the optimal route for administration if IFN-beta is given after viral infection.

Published
2000
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33. Ultralow-background photon-detection system for collinear laser spectroscopy of high-energy highly charged ion beams

Author

T. Ariga, Hideki Okuno, Y. Yano, T. Kubo, Masayuki Kase, Atsumasa Yoshida, S. Ozawa, Isao Tanihata, Takeshi Katayama, K. Ikegami, Naohito Inabe, Masanori Wakasugi, and Y. X. Watanabe

Subjects
Physics, Nuclear and High Energy Physics, Ion beam deposition, Photon, Ion beam, Excited state, Highly charged ion, Physics::Accelerator Physics, Cryopump, Atomic physics, Spectroscopy, Instrumentation, Ion
Abstract

An ultralow-background fluorescence-photon detection system has been successfully developed for the collinear laser spectroscopy of highly charged ion beams having a relativistic velocity. We applied the technology of a cryopump to a photon-detection system. A charcoal panel, optical filters and four movable collimators strongly reduced the background due to scattered photons of the incident laser beam. The background due to collisions between the ion beam and residual gas was also suppressed by improving the vacuum using a cryopump technique. With this system, we clearly observed the laser-induced fluorescence spectra of the 2S 1/2 -2P 1/2,3/2 transitions in an Li-like 11 B 2+ ion beam with a signal-to-noise ratio of 200. The ion-beam energy was 11.25A MeV and the intensity was 10 4 ions/bunch. We also demonstrated that the system has the capability of measuring the lifetimes of excited states.

Published
1998
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34. Sensitization of Lewis rats with sulfoglucuronosyl paragloboside: Electrophysiological and immunological studies of an animal model of peripheral neuropathy

Author

A. Vasquez, H. Yoshino, M. Yamawaki, A. Ben Younes, Robert K. Yu, Nicole Baumann, T. Kanda, and T. Ariga

Subjects
Paraproteinemia, biology, medicine.diagnostic_test, business.industry, medicine.disease, Chronic Polyneuropathy, Nerve conduction velocity, Cellular and Molecular Neuroscience, Titer, Peripheral neuropathy, medicine.anatomical_structure, Western blot, Immunology, biology.protein, Medicine, Antibody, business, Sensitization
Abstract

Antibodies against sulfoglucuronosyl glycosphingolipids (SGGLs) are known to be present in sera of patients with chronic polyneuropathy associated with IgM paraproteinemia. We recently studied rats sensitized with sulfoglucuronosyl paragloboside (SGPG), a major SGGL species, emulsified with keyhold limpet hemocyanin and Freund's adjuvant. The titer of the IgM class antibodies against SGPG increased up to 1:1,600, while that of the IgG class increased up to 1:800 2 weeks after sensitization. The antibodies showed a high degree of antigenic specificity; no cross-reactivity with other brain glycolipids could be detected. They, however, reacted with human myelin-associated glycoprotein (MAG) by Western blot analysis, but not with rat MAG. These animal models showed minor but clear clinical signs of neuropathy, consisting of mild tail muscle tone loss and walking disabilities. Electrophysiological examination of the sciatic nerves revealed nerve conduction abnormalities which consisted of conduction block and mild decrease in conduction velocity. Thus, our results support the concept that anti-SGPG antibodies may play an important pathogenetic role in this type of chronic neuropathy.

Published
1996
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35. Nuclear moments ofTa179from optical measurement of hyperfine structure

Author

Toshiyuki Murayama, T. T. Inamura, M. Wakasugi, T. Ariga, T. Ishizuka, W. G. Jin, A. Ikeda, Isao Sugai, J. Z. Ruan, M. G. Hies, Hidetsugu Katsuragawa, and Takashi Wakui

Subjects
Physics, Nuclear and High Energy Physics, Condensed matter physics, Magnetic moment, Quadrupole, Physics::Atomic Physics, Atomic physics, Ground state, Spectroscopy, Hyperfine structure, Magnetic dipole
Abstract

We have made high-resolution laser spectroscopy of the hyperfine structure of a radioactive isotope $^{179}\mathrm{Ta}$ (${T}_{\frac{1}{2}}=1.8$ y) using an argon-ion sputtering atomic-beam source. From hyperfine constants $A$ and $B$ of the atomic ground state ($^{4}F_{\frac{3}{2}}5{d}^{3}6{s}^{2}$), the magnetic dipole and electric quadrupole moments of the nuclear ground state of $^{179}\mathrm{Ta}(I=\frac{7}{2})$ have been determined for the first time: ${\ensuremath{\mu}}_{I}^{179}=2.289(9){\ensuremath{\mu}}_{N}$ and ${Q}_{s}^{179}=3.37(4)$ b. It is pointed out that magnetic moments of the ground and isomeric states in the region $N=102\ensuremath{-}112$ can be systematically described in terms of the presently available theory while the revealed systematic behavior of electric quadrupole moments is hardly reproduced by the theory.

Published
1996
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36. Laser-rf double-resonance spectroscopy ofHf177,179

Author

T. Ariga, Isao Sugai, T. Ishizuka, W. G. Jin, Masanori Wakasugi, Takashi Wakui, Toshiyuki Murayama, T. T. Inamura, and Hidetsugu Katsuragawa

Subjects
Physics, Statistics::Theory, Statistics::Applications, Resonance, Electron, Laser, Omega, Atomic and Molecular Physics, and Optics, law.invention, law, Quadrupole, Physics::Atomic Physics, Atomic physics, Spectroscopy, Hyperfine structure, Magnetic dipole
Abstract

The atomic-beam laser-rf double-resonance technique has been used to make precision measurements of the hyperfine structure (hfs) splittings in the 5${\mathit{d}}^{2}$6${\mathit{s}}^{2}$ $^{3}$${\mathit{F}}_{\mathit{J}}$ (J=2\char21{}4) states in $^{177,179}\mathrm{Hf}$ i. By making corrections to the second-order hfs effects, magnetic dipole (A), electric quadrupole (B), and magnetic octupole (C) hfs constants are obtained for the $^{3}$${\mathit{F}}_{\mathit{J}}$ states in $^{177,179}\mathrm{Hf}$: The constant C has a strong J dependence as well as does A and B; the isotopic ratio of the constant A between $^{177}\mathrm{Hf}$ and $^{179}\mathrm{Hf}$ has a significant J dependence, indicating J-dependent hyperfine anomalies, while that of the constant C is independent of J within experimental uncertainties, which is taken to be the ratio of the nuclear-ground-state magnetic octupole moments \ensuremath{\Omega}, i.e., \ensuremath{\Omega}${(}^{177}$Hf)/\ensuremath{\Omega}${(}^{179}$Hf)=-0.41(9). It is also pointed out that there is a clear indication of nuclear-spin dependence of the isotopic ratios of C. The single-electron hfs parameters of the 5d electron for the 5${\mathit{d}}^{2}$6${\mathit{s}}^{2}$ configuration in Hf i are obtained, and the Sternheimer shielding factor ${\mathit{R}}_{5\mathit{d}}$=-0.397(8) is derived.

Published
1995
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37. Precision measurement of the hyperfine structure and nuclear moments ofTa180mby laser-rf double resonance

Author

Takashi Wakui, T. Ariga, Hidetsugu Katsuragawa, T. Ishizuka, Isao Sugai, Masanori Wakasugi, W. G. Jin, Toshiyuki Murayama, and T. T. Inamura

Subjects
Physics, Statistics::Theory, Statistics::Applications, Magnetic moment, Resonance, Laser, Atomic and Molecular Physics, and Optics, law.invention, law, Quadrupole, Atomic physics, Spectroscopy, Ground state, Hyperfine structure
Abstract

Hyperfine structure of the 5${\mathit{d}}^{3}$6${\mathit{s}}^{2}$ $^{4}$${\mathit{F}}_{3/2}$ ground state in $^{180\mathit{m}}\mathrm{Ta}$ i was precisely measured by means of atomic-beam laser-rf double-resonance spectroscopy. Hyperfine-interaction constants A and B for the ground state $^{4}$${\mathit{F}}_{3/2}$ were determined with accuracies of 3 and 10 ppm, respectively. The nuclear electric quadrupole moment was derived, as well as a precise value of the magnetic moment for $^{180\mathit{m}}\mathrm{Ta}$ (${\mathit{I}}^{\mathrm{\ensuremath{\pi}}}$=${9}^{\mathrm{\ensuremath{-}}}$): the magnetic dipole moment is ${\mathrm{\ensuremath{\mu}}}_{\mathit{I}}^{180\mathit{m}}$=+4.825(11)${\mathrm{\ensuremath{\mu}}}_{\mathit{N}}$ and the spectroscopic quadrupole moment is ${\mathit{Q}}_{\mathit{s}}^{180\mathit{m}}$=+4.946(20)b.

Published
1994
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38. Isotope shift and hyperfine structure of refractory elements by laser spectroscopy with sputtered atomic beams

Author

T. Ishizuka, T. Ariga, M. Koizumi, Toshiyuki Murayama, W. G. Jin, T. T. Inamura, Hidetsugu Katsuragawa, Takashi Wakui, T. Kashiwabara, I. Sugai, and Masanori Wakasugi

Subjects
Nuclear and High Energy Physics, education.field_of_study, Isotope, Chemistry, Stable isotope ratio, Population, Refractory metals, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Metastability, Physics::Atomic Physics, Physical and Theoretical Chemistry, Atomic physics, Atomic vapor laser isotope separation, education, Spectroscopy, Hyperfine structure
Abstract

Ar-ion sputtering is successfully used to produce intense atomic beams of refractory elements. The population in the ground and low metastable states of Ta 1 is investigated for the sputtered atoms. Isotope shifts and hyperfine structures of seven transitions have been measured for the stable isotopes of Hf, Ta and W. The hyperfine coupling constantsA andB are determined for eight atomic levels of177,179Hf,181Ta and183W.

Published
1994
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39. Laser-rf double-resonance spectroscopy of refractory elements:i183andi181

Author

T. Ariga, Toshiyuki Murayama, W. G. Jin, T. T. Inamura, Masanori Wakasugi, Isao Sugai, Takashi Wakui, T. Ishizuka, and Hidetsugu Katsuragawa

Subjects
Physics, Argon, Refractory metals, Tantalum, Resonance, chemistry.chemical_element, Laser, Atomic and Molecular Physics, and Optics, law.invention, Nuclear magnetic resonance, chemistry, law, Radio frequency, Time-resolved spectroscopy, Spectroscopy
Published
1994
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40. Ion‐sputtering atomic beam source for high‐resolution laser spectroscopy of refractory elements

Author

I. Sugai, Hidetsugu Katsuragawa, Wei-Guo Jin, Mitsuo Koizumi, T. Ariga, M. Wakasugi, Takashi Wakui, T. Kashiwabara, T. Ishizuka, Toshiyuki Murayama, and T. T. Inamura

Subjects
Materials science, Isotope, Sputtering, Physics::Atomic and Molecular Clusters, Refractory metals, Resonance, Physics::Atomic Physics, Atomic physics, Spectroscopy, Kinetic energy, Instrumentation, Hyperfine structure, Acceleration voltage
Abstract

A high‐resolution laser spectroscopy system for refractory elements with an argon‐ion‐ sputtering atomic beam source was constructed, and it has been demonstrated that the sputtering method is extremely useful as an atomic beam source for high‐resolution laser spectroscopy to measure hyperfine structures and isotope shifts for refractory elements, such as Hf, Ta, and W. This source produced intense neutral atomic beams of more than 1010 atoms/s for these elements, and the yield was easily controlled by adjusting the argon‐ion current and the acceleration voltage. Resonance linewidths were 32, 66, and 48 MHz for Hf, Ta, and W, respectively, which are sufficient to measure the hyperfine structures and the isotope shifts in optical transitions. With this system, the signal‐to‐noise ratio reached more than 106. In addition, the temperature of the sputtered atoms found was rather low compared to the kinetic energy given to the atoms.

Published
1993
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41. Semi-continuous oscillation of halide copper vapor laser

Author

Makoto Aoyama, Y. Shouji, S. Ohta, Koichi Kasuya, Tetsuo Kojima, Hiroshi Kumagai, Kazuhiko Miyazaki, H. Yagi, M. Tsunekane, Yoshihisa Hasegawa, Megumi Hibi, H. Watanabe, J. Sakuma, Jianqiu Xu, Chiyoe Yamanaka, Takashi Hori, Kaoru Suzuki, Y. Tamaoki, Y. Kodama, Shingo Matsushita, Shinji Nagai, Chobei Yamabe, Fumihiko Nakano, Yoshinori Ochiishi, Koji Yasui, T. Abe, Hakaru Mizoguchi, Yoko Nakano, T. Shizuma, Teiji Kase, Chul-Iian Oh, Masahiro Nakatsuka, H. Kouta, Norihito Saito, Yasuo Kawada, Shuichi Fujikawa, T. Kawashima, S. Kubodera, Eisuke Minehara, Akira Mori, T. Mochizuki, A. Ando, R. Nagai, Michio Nakayama, Y. Ueno, K. Misawa, T. Shirai, K. Takatoi, Naoto Hisanaga, Satoshi Wada, T. Nishisaka, S. Hashimoto, Y. Masaki, K. Baba, T. Igarashi, Fumihiko Kannari, Katuhiro Uno, T. Kaminoe, Ayako Ohbu, Taisuke Miura, A. Suda, Takashi Watanabe, Y. Nakayama, M. Sugimoto, N. Nishimori, Norihiko Nishizawa, Tomohiro Hisida, Takafumi Fuseya, Kenzo Nanri, K. Takahashi, Makoto Asakawa, K. Mukaihara, Ken-ichi Ueda, R. Kubo, M. Okamura, K. Aoki, R. Nohdomi, Takahiro Kamiya, Nobuya Hayashi, Fuyuki Tawada, Kengo Fukuda, T. Kasamatsu, H. Yoneda, P. Wang, T. Uematsu, K. Fujisaki, Yoshikazu Suzuki, Yoshiko Tokura, J. Lu, Koichi Yamakawa, Shigeki Muto, K. Sajiki, Hiroki Yoshida, Makoto Yoshida, K. Imasaki, K. Takasago, T. Kumazaki, Takehito Hayakawa, Minoru Obara, N. Kitatochi, Takayuki Shimizu, T. Yanagitani, N. Inoue, Sumiko Nakai, T. Murai, Toshio Goto, Shuji Fukuoka, A. A. Kaminskii, H. Fujii, K. Fukugaki, Yuichi Asakawa, K. Torizuka, Hajime Nishioka, M. Sawamura, Y. Sugimoto, M. Yamanaka, Kenzo Miyazaki, R. Hajima, Y. Oishi, Keigo Nagasaka, Junichi Fujimoto, Y. Tabe, T. Ariga, S. Akita, K. Hosono, Susumu Konno, Takayuki Yabu, T. Kurita, K. Mizuno, Keisuke Furuta, Yosinari Yukawa, Yutaka Akahane, Tomoki Sekiguchi, Kentarou Sugiyama, S. Miyamoto, K. Mima, Tadashi Kanabe, Tomoo Fujioka, Yukio Sagami, Takashi Nire, H. Morita, Kaoru Asabe, Y. Kihara, Y. Izawa, Nobuhiro Kikuzawa, Kazunori Takaichi, Yoshinori Kato, J. Kawanaka, H. Hoshino, Sung-Fin Park, Hiroshi Yuasa, K. Midorikawa, T. Ueno, Hideo Tashiro, S. Amano, Shouji Hirose, Kan-ichi Fujii, Yimin Wang, Masamori Endo, Saburoh Satoh, Kenji Yoshida, Nobuhisa Ohigashi, T. Ishida, H. Nagata, M. Masuda, W. Sasaki, Toshihiko Yamauchi, M. Fujita, H. Yamamoto, E. Yoshitani, K. Kanari, Y. Kuwano, and Yoshiaki Tsunawaki

Subjects
Copper vapor laser, Materials science, Oscillation, Analytical chemistry, Halide
Published
2001
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42. Identification of the DSPP mutation in a new kindred and phenotype-genotype correlation

Author

S-K, Lee, K-E, Lee, Y-H, Hwang, M, Kida, T, Tsutsumi, T, Ariga, J-C, Park, and J-W, Kim

Subjects
Tooth Crown, Aspartic Acid, Extracellular Matrix Proteins, Genotype, Adenine, Sialoglycoproteins, Valine, Exons, Phosphoproteins, Pedigree, Dentin Dysplasia, Phenotype, Haplotypes, Amelogenesis, Dentinogenesis Imperfecta, Mutation, Humans, Dental Enamel Hypoplasia, Female, Child, Thymine
Abstract

Hereditary dentin defects can be grouped into three types of dentinogenesis imperfecta (DGI) and two types of dentin dysplasia. Tooth enamel is considered normal in patients with hereditary dentin defects, but is easily worn down and fractured due to DSPP mutation-induced altered dentin properties. The purposes of this study were to identify genetic cause of a family with type II DGI and enamel defects.We identified a family with type II DGI and a unique form of hypoplastic enamel defect affecting occlusal third of the crown. Family members were recruited for the genetic analysis and DNA was obtained from peripheral whole blood.Mutational analysis revealed a T to A transversion in exon 3 of the DSPP (c.53TA, p.V18D). Haplotype analysis showed that the same mutation arose separately in two different families having DGI with similar enamel defects, indicating that this phenotype is associated with this specific DSPP mutation. Clinical features suggest that enamel formation was affected in the affected individuals during early amelogenesis, in addition to the dentin defect.We observed that a DSPP gene mutation not only influences dentinogenesis but also affects early stage amelogenesis.

Published
2010

44. Effect of Decreasing of Cobalt Content in Properties for Diamond∕Cemented Carbide Tools

Author

A. Waratta, M. Hamdi, T. Ariga, Mohamad Rusop, Wong Tin Wui, Norlida Kamarulzaman, Rihanum Yahaya Subban, K. Noorsal, M. H. Saleh, R. Ibrahim, R. Idris, I. Zainol, and F. A. Zakaria

Subjects
Materials science, Metallurgy, Diamond, Sintering, engineering.material, Vacuum furnace, visual_art, Powder metallurgy, Vickers hardness test, visual_art.visual_art_medium, Cemented carbide, engineering, Ceramic, Porosity
Abstract

Powder metallurgy plays a role in manufacturing such as automotive and cutting tool applications. Diamond/cemented carbide tools are also made from this technique. Diamond particle and other matrix materials were employed in this study. The purpose is to investigate the physical and mechanical properties of different Cobalt (Co) content samples by using Taguchi’s method. The materials used in the experiments were mixed by using a ball‐mill machine. The mixed powders were pressed by conventional method. Then the green samples were sintered in a vacuum furnace. After reaching 500° C, the samples were sintered with Argon (Ar) gas. The sintered samples were investigated density by immersion method, porosity by water saturation method, and hardness by Vicker hardness tester. It was found that with 59.5% Co content, plain diamond type, sintering temperature of 950° C, sintering time of 40 minutes, and pressure of 625 MPa, density, porosity, and hardness got the best result in this study. From the Taguchi’s analysis, the significant factors effected the performance were composition, sintering temperature, and sintering time.

Published
2010
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45. The α-decay energies and halflives of 195g,mAt and 199Fr

Author

Y. Tagaya, Toru Nomura, T. Ariga, S. Hashimoto, Kosuke Morita, K. Ohta, I. Hisanaga, Y. H. Pu, T. Motobayashi, and T. Minemura

Subjects
Physics, Nuclear and High Energy Physics, Isotope, Hadron, Nuclear fusion, Atomic physics
Abstract

The α-decay energy and halflife of 195mAt were determined to be 6960±20 keV and 385+69 −51 ms respectively, on the basis of genetic correlations in the 169Tm(36Ar, α6n)195At reaction, while those of 195gAt measured simultaneously were 7105±30 keV and 146+21 −17 ms respectively, reconfirming the previously reported values. A new isotope 199Fr was also produced and identified in the same way in the 169Tm(36Ar, 6n)199Fr reaction, yielding Eα= 7655±40 keV and T1/2= 12+10 −4 ms.

Published
1999
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48. A novel missense mutation (p.P52R) in amelogenin gene causing X-linked amelogenesis imperfecta

Author

Miyuki Kida, A. Matsuda, S. Takabayashi, H. Sekiguchi, H. Ochi, T. Ariga, S. Minamitake, and Y. Sakiyama

Subjects
0301 basic medicine, Male, Heterozygote, Guanine, Proline, Amelogenesis Imperfecta, Mutant, Mutation, Missense, Biology, Arginine, 03 medical and health sciences, Exon, Cytosine, 0302 clinical medicine, stomatognathic system, X-Ray Diffraction, medicine, Missense mutation, Humans, Amelogenesis imperfecta, Dental Enamel, General Dentistry, AMELX, Genetics, Enamel paint, Amelogenin, Spectrometry, X-Ray Emission, Genetic Diseases, X-Linked, 030206 dentistry, Exons, medicine.disease, Pedigree, stomatognathic diseases, 030104 developmental biology, visual_art, Mutation testing, visual_art.visual_art_medium, Female
Abstract

Amelogenesis imperfecta (AI) is a hereditary disease with abnormal dental enamel formation. Here we report a Japanese family with X-linked AI transmitted over at least four generations. Mutation analysis revealed a novel mutation (p.P52R) in exon 5 of the amelogenin gene. The mutation was detected as heterozygous in affected females and as hemizygous in their affected father. The affected sisters exhibited vertical ridges on the enamel surfaces, whereas the affected father had thin, smooth, yellowish enamel with distinct widening of inter-dental spaces. To study the pathological cause underlying the disease in this family, we synthesized the mutant amelogenin p.P52R protein and evaluated it in vitro. Furthermore, we studied differences in the chemical composition between normal and affected teeth by x-ray diffraction analysis and x-ray fluorescence analysis. We believe that these results will greatly aid our understanding of the pathogenesis of X-linked AI.

Published
2006

49. Nuclear moments and charge radiusof175Hf from optical measurement of hyperfine structure

Author

Toshiyuki Murayama, M. Wakasugi, T. T. Inamura, A. Yamashita, Takashi Wakui, J. Z. Ruan, Isao Sugai, Hidetsugu Katsuragawa, T. Ariga, M. G. Hies, T. Ishizuka, and W. G. Jin

Subjects
Physics, Nuclear and High Energy Physics, Charge radius, Quadrupole, Charge density, Atomic number, Atomic physics, Spectroscopy, Hyperfine structure, Magnetic dipole, Effective nuclear charge
Abstract

The hyperfine structure of the radioactive isotope {sup 175}Hf has been measured by means of laser spectroscopy. The magnetic dipole and electric quadrupole moments of {sup 175}Hf are determined: {ital {mu}{sub I}={minus}0.62(3){mu}{sub N}} and {ital Q{sub s}}=+2.6(2) b; the sign of {mu}{ital {sub I}} has been shown to be negative. It has been shown that {sup 175}Hf has almost the same nuclear charge radius as {sup 174}Hf. {copyright} {ital 1997} {ital The American Physical Society}

Published
1997
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50. Molecular analysis of non-syndromic preaxial polydactyly: preaxial polydactyly type-IV and preaxial polydactyly type-I

Author

H, Fujioka, T, Ariga, K, Horiuchi, M, Otsu, H, Igawa, K, Kawashima, Y, Yamamoto, T, Sugihara, and Y, Sakiyama

Subjects
Foot Deformities, Male, DNA Mutational Analysis, Kruppel-Like Transcription Factors, Infant, Nerve Tissue Proteins, Hand Deformities, Pedigree, DNA-Binding Proteins, Polydactyly, Phenotype, Codon, Nonsense, Zinc Finger Protein Gli3, Humans, Transcription Factors
Abstract

Human GLI3 gene mutations have been identified in several phenotypes of digital abnormality such as Greig cephalopolysyndactyly syndrome, Pallister-Hall syndrome, preaxial polydactyly type-IV (PPD-IV) and postaxial polydactyly. However, the different phenotypes resulting from GLI3 mutations have not yet been properly defined. We have experienced two types of digital abnormality without other complicating developmental defects; a family with foot PPD-IV with syndactyly of the third and fourth fingers, and four sporadic cases with biphalangeal thumb polydactyly (PPD-I). The genes responsible for syndactyly of the third and fourth fingers (syndactyly type-I) and PPD-I have not yet been identified; we therefore examined the involvement of the GLI3 gene in these subtypes of digital abnormality. We found a non-sense mutation in the GLI3 gene in the family with foot PPD-IV accompanied with hand syndactyly of the third and fourth fingers, but no mutations were detected in the GLI3 gene in the four other cases with PPD-I alone. Thus, the phenotype of foot PPD-IV accompanied with hand syndactyly of the third and fourth fingers may result from a GLI3 mutation, whereas the PPD-I phenotype alone is not caused by GLI3 gene defect. These results will help to define the phenotypic spectrum of GLI3 morphopathies, which have been recently proposed.

Published
2005

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