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144 results on '"Watanabe, Y.X."'

2. Paricle identification at VAMOS++ with machine learning techniques

Author

Cho, Y., Kim, Y.H., Choi, S., Park, J., Bae, S., Hahn, K.I., Son, Y., Navin, A., Lemasson, A., Rejmund, M., Ramos, D., Ackermann, D., Utepov, A., Fourgeres, C., Thomas, J.C., Goupil, J., Fremont, G., de France, G., Watanabe, Y.X., Hirayama, Y., Jeong, S., Niwase, T., Miyatake, H., Schury, P., Rosenbusch, M., Chae, K., Kim, C., Kim, S., Gu, G.M., Kim, M.J., John, P., Andreyev, A.N., Korten, W., Recchia, F., Angelis, G. de, Vidal, R. Perez, Rezynkina, K., Ha, J., Didierjean, F., Marini, P., Treasa, D., Tsekhanovich, I., Dudouet, J., Bhattacharyya, S., Mukherjee, G., Banik, R., Bhattacharya, S., and Mukai, M.

Published
2023
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5. Neutron capture reaction cross-section of 79Se through the 79Se(d,p) reaction in inverse kinematics

Author

Imai, N., primary, Dozono, M., additional, Michimasa, S., additional, Sumikama, T., additional, Ota, S., additional, Hayakawa, S., additional, Hwang, J.W., additional, Iribe, K., additional, Iwamoto, C., additional, Kawase, S., additional, Kawata, K., additional, Kitamura, N., additional, Masuoka, S., additional, Nakano, K., additional, Schrock, P., additional, Suzuki, D., additional, Tsunoda, R., additional, Wimmer, K., additional, Ahn, D.S., additional, Beliuskina, O., additional, Chiga, N., additional, Fukuda, N., additional, Ideguchi, E., additional, Kusaka, K., additional, Miki, H., additional, Miyatake, H., additional, Nagae, D., additional, Ohmika, S., additional, Ohtake, M., additional, Ong, H.J., additional, Otsu, H., additional, Sakurai, H., additional, Shimizu, H., additional, Shimizu, Y., additional, Sun, X., additional, Suzuki, H., additional, Takaki, M., additional, Takeda, H., additional, Takeuchi, S., additional, Teranishi, T., additional, Watanabe, Y., additional, Watanabe, Y.X., additional, Yako, K., additional, Yamada, H., additional, Yamaguchi, H., additional, Yang, L., additional, Yanagihara, R., additional, Yanagisawa, Y., additional, Yoshida, K., additional, and Shimoura, S., additional

Published
2024
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7. New energy-degrading beamline for in-flight RI beams, OEDO

Author

Michimasa, S., Imai, N., Dozono, M., Hwang, J.W., Yamada, K., Ota, S., Yoshida, K., Yanagisawa, Y., Kusaka, K., Ohtake, M., Matsushita, M., Ahn, D.S., Beliuskina, O., Chiga, N., Chikaato, K., Fukuda, N., Hayakawa, S., Ideguchi, E., Iribe, K., Iwamoto, C., Kawase, S., Kawata, K., Kitamura, N., Masuoka, S., Miyatake, H., Nagae, D., Nakajima, R., Nakamura, T., Nakano, K., Omika, S., Otsu, H., Sakurai, H., Schrock, P., Shimizu, H., Shimizu, Y., Sumikama, T., Sun, X., Suzuki, D., Suzuki, H., Takaki, M., Takechi, M., Takeda, H., Takeuchi, S., Teranishi, T., Tsunoda, R., Wang, H., Watanabe, Y., Watanabe, Y.X., Wimmer, K., Yako, K., Yamaguchi, H., Yang, L., Yoshida, H., and Shimoura, S.

Published
2020
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10. A beamline for fundamental neutron physics at TRIUMF

Author

Ahmed, S., Andalib, T., Barnes, M.J., Bidinosti, C.B., Bylinsky, Y., Chak, J., Das, M., Davis, C.A., Franke, B., Gericke, M.T.W., Giampa, P., Hahn, M., Hansen-Romu, S., Hatanaka, K., Jamieson, B., Jones, D., Katsika, K., Kawasaki, S., Klassen, W., Konaka, A., Korkmaz, E., Kuchler, F., Kurchaninov, L., Lang, M., Lee, L., Lindner, T., Madison, K.W., Mammei, J., Mammei, R., Martin, J.W., Matsumiya, R., Picker, R., Pierre, E., Ramsay, W.D., Rao, Y.-N., Rawnsley, W.R., Rebenitsch, L., Remon, C.A., Schreyer, W., Sikora, A., Sidhu, S., Sonier, J., Thorsteinson, B., Vanbergen, S., van Oers, W.T.H., Watanabe, Y.X., and Yosifov, D.

Published
2019
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22. Study of collisions of 136Xe + 198Pt for the KEK isotope separator

Author

Watanabe, Y.X., Hirayama, Y., Imai, N., Ishiyama, H., Jeong, S.C., Miyatake, H., Clement, E., de France, G., Navin, A., Rejmund, M., Schmitt, C., Pollarolo, G., Corradi, L., Fioretto, E., Montanari, D., Choi, S.H., Kim, Y.H., Song, J.S., Niikura, M., Suzuki, D., Nishibata, H., and Takatsu, J.

Published
2013
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24. Total reaction cross sections for 8Li + 90Zr at near-barrier energies

Author

Pakou, A., Pierroutsakou, D., Mazzocco, M., Acosta, L., Aslanoglou, X., Boiano, A., Boiano, C., Carbone, D., Cavallaro, M., Grebosz, J., Keeley, N., La Commara, M., Manea, C., Marquinez-Duran, G., Martel, I., Parascandolo, C., Rusek, K., Sánchez-Benítez, A.M., Sgouros, O., Signorini, C., Soramel, F., Soukeras, V., Stiliaris, E., Strano, E., Torresi, D., Trzcinska, A., Watanabe, Y.X., and Yamaguchi, H.

Published
2015
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27. 7Be and 8B reaction dynamics at Coulomb barrier energies

Author

Strano E., Mazzocco M., Boiano A., Boiano C., La Commara M., Manea C., Parascandolo C., Pierroutsakou D., Signorini C., Torresi D., Yamaguchi H., Kahl D., Acosta L., Di Meo P., Fernandez-Garcia J.P., Glodariu T., Grebosz J., Guglielmetti A., Imai N., Hirayama Y., Ishiyama H., Iwasa N., Jeong S.C., Jia H.M., Keeley N., Kim Y.H., Kimura S., Kubono S., Lay J.A., Lin C.J., Marquinez-Duran G., Marte I., Miyatake H., Mukai M., Nakao T., Nicoletto M., Pakou A., Rusek K., Sakaguchi Y., Sanchez-Benitez A.M., Sava T., Sgouros O., Stefanini C., Soramel F., Soukeras V., Stiliaris E., Stroe L., Teranishi T., Toniolo N., Wakabayashi Y., Watanabe Y.X., Yang L., and Yang Y.Y.

Subjects
Physics, QC1-999
Abstract

We investigated the reaction dynamics induced by the 7Be,8B+208Pb collisions at energies around the Coulomb barrier. Charged particles originated by both the col- lisions were detected by means of 6 ΔE-Eres telescopes of a newly developed detector array. Experimental data were analysed within the framework of the Optical Model and the total reaction cross-sections were compared together and with the 6,7Li+208Pb colli-sion data. According to the preliminary results, 7Be nucleus reactivity is rather similar to the 7Li one whereas the 8B+208Pb total reaction cross section appears to be much larger than those measured for reactions induced by the other weakly-bound projectiles on the same target.

Published
2018
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28. Beta decay of the axially asymmetric ground state of Re

Author

Watanabe, H., Watanabe, Y.X., Hirayama, Y., Andreyev, A.N., Hashimoto, T., Kondev, F.G., Lane, G.J., Litvinov, Yu.A., Liu, J.J., Miyatake, H., Moon, J.Y., Morales, A.I., Mukai, M., Nishimura, S., Niwase, T., Rosenbusch, M., Schury, P., Shi, Y., Wada, M., and Walker, P.M.

Abstract

The β decay of 75192Re$_{117}$, which lies near the boundary between the regions of predicted prolate and oblate deformations, has been investigated using the KEK Isotope Separation System (KISS) in RIKEN Nishina Center. This is the first case in which a low-energy beam of rhenium isotope has been successfully extracted from an argon gas-stopping cell using a laser-ionization technique, following production via multi-nucleon transfer between heavy ions. The ground state of $^{192}$Re has been assigned Jπ=(0−) based on the observed β feedings and deduced logft values towards the 0+ and 2+ states in $^{192}$Os, which is known as a typical γ-soft nucleus. The shape transition from axial symmetry to axial asymmetry in the Re isotopes is discussed from the viewpoint of single-particle structure using the nuclear Skyrme-Hartree-Fock model.

Published
2021

29. KEKCB-18 GHz ECR charge breeder at TRIAC

Author

Jeong, S.C., Imai, N., Oyaizu, M., Arai, S., Fuchi, Y., Hirayama, Y., Ishiyama, H., Miyatake, H., Okada, M., Tanaka, M.H., Watanabe, Y.X., Ichikawa, S., Osa, A., Sato, T.K., and Kabumoto, H.

Published
2008
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30. 8B + 208Pb Elastic Scattering at Coulomb Barrier Energies

Author

Commara M. La, Mazzocco M., Boiano A., Boiano C., Manea C., Parascandolo C., Pierroutsakou D., Signorini C., Strano E., Torresi D., Yamaguchi H., Kahl D., Meo P. Di, Grebosz J., Imai N., Hirayama Y., Ishiyama H., Iwasa N., Jeong S.C., Jia H.M., Kim Y.H., Kimura S., Kubono S., Lin C.J., Miyatake H., Mukai M., Nakao T., Nicoletto M., Sakaguchi Y., Sánchez-Benítez A.M., Soramel F., Teranishi T., Wakabayashi Y., Watanabe Y.X., Yang L., and Yang Y.Y.

Subjects
Physics, QC1-999
Abstract

The scattering process of weakly-bound nuclei at Coulomb barrier energies provides deep insights on the reaction dynamics induced by exotic nuclei. Within this framework, we measured for the first time the scattering process of the short-lived Radioactive Ion Beam (RIB) 8B (S p = 0.1375 MeV) from a 208Pb target at 50 MeV beam energy. The 8B RIB was produced by means of the in-flight facility CRIB (RIKEN, Japan) with an average intensity on target of 10 kHz and a purity about 25%. Elastically scattering ions were detected in the angular range θc.m. = 10°-160° by means of the detector array EXPADES. A preliminary optical model analysis indicates a total reaction cross section of about 1 b, a value, once reduced, 2-3 times larger than those obtained for the reactions induced by the stable weakly-bound projectiles 6,7Li on a 208Pb target in the energy range around the Coulomb barrier.

Published
2017
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31. Study of the population of neutron-rich heavy nuclei in the A~200 mass region via multinucleon transfer reactions

Author

Fioretto E., Corradi L., Galtarossa F., Szilner S., Montanari D., Mijatović T., Pollarolo G., Jia H.M., Ackermann D., Bourgin D., Colucci G., Courtin S., Fruet G., Goasduff A., Grebosz J., Haas F., Jelavić Malenica D., Jeong S.C., John P.R., Milin M., Montagnoli G., Skukan N., Scarlassara F., Soić N., Stefanini A.M., Strano E., Tokić V., Ur C.A, Valiente-Dobón J.J., and Watanabe Y.X.

Subjects
Physics, QC1-999
Abstract

Multineutron and multiproton transfer channels, populated in the inverse kinematics reaction 197Au+130Te at Elab=1.07 GeV, were measured at Laboratori Nazionali di Legnaro using the presently heaviest ion beam delivered by the PIAVE-ALPI accelerator complex and detecting both projectile-like and targetlike ions. To this end the large solid angle magnetic spectrometer PRISMA was coupled to a second arm for the detection of the heavy fragments in kinematic coincidence with the light ones selected and identified with the spectrometer. The data analysis is still in progress and will allow to compare the yields of both light and heavy partner with theoretical predictions performed with the GRAZING code to get quantitative information on transfer channels and the effect of evaporation and fission on the production rate of primary fragments. The mass integrated Z distribution, extracted from the experimental data, evidenced the population of proton pickup channels that, in conjunction with the neutron stripping ones from the 130Te, open the path for the production of neutron-rich heavy nuclei. In the following, we will present some preliminary results as well as details on the experimental configuration and perspectives for future investigations in the neutron-rich heavy region.

Published
2017
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33. Beta decay of the axially asymmetric ground state of 192Re

Author

Watanabe, H., primary, Watanabe, Y.X., additional, Hirayama, Y., additional, Andreyev, A.N., additional, Hashimoto, T., additional, Kondev, F.G., additional, Lane, G.J., additional, Litvinov, Yu.A., additional, Liu, J.J., additional, Miyatake, H., additional, Moon, J.Y., additional, Morales, A.I., additional, Mukai, M., additional, Nishimura, S., additional, Niwase, T., additional, Rosenbusch, M., additional, Schury, P., additional, Shi, Y., additional, Wada, M., additional, and Walker, P.M., additional

Published
2021
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34. Quenching of neutron E2 effective charge in neutron-rich nuclei and the ground-state spin-parity of 17C

Author

Ogawa, H., Asahi, K., Ueno, H., Sakai, K., Miyoshi, H., Kameda, D., Suzuki, T., Izumi, H., Imai, N., Watanabe, Y.X., Yoneda, K., Fukuda, N., Watanabe, H., Yoshimi, A., Sato, W., Aoi, N., Nagakura, M., Suga, T., Yogo, K, Goto, A., Honda, T., Kobayashi, Y., Schmidt-Ott, W.-D., Neyens, G., Teughels, S., Yoshida, A., Kubo, T., and Ishihara, M.

Published
2002
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35. Beta-decay spectroscopy of r-process nuclei around N = 126

Author

Hirayama Y., Miyatake H., Watanabe Y.X., Imai N., Ishiyama H., Jeong S.C., Jung H.S., Oyaizu M., Mukai M., Kimura S., Sonoda T., Wada M., Kim Y.H., Huyse M., Kudryavtsev Yu., and Van Duppen P.

Subjects
Physics, QC1-999
Abstract

KEK Isotope Separation System (KISS) has been developed at RIKEN to study the β-decay properties of neutron-rich isotopes with neutron numbers around N = 126 to understand the astrophysical site of r-process. These nuclei will be produced by multi-nucleon transfer reactions in neutron-rich heavy ion collisions between 136Xe beam and 198Pt target. The KISS consists of an argon gas cell combined with a laser resonance ionization technique for atomic number selection, of an ISOL mass-separation system and of a detector system for the β-decay spectroscopy of nuclei around N = 126. The argon gas cell of KISS is a key component for thermalizing (stopping and neutralizing) and accumulating the unstable nuclei, and selectively ionizing them by using laser. We have performed off-and on-line experiments to study the basic properties of the gas cell as well as KISS. We successfully extracted the laser-ionized stable 198Pt atoms from the KISS at the commissioning on-line experiments. We furthermore extracted laser-ionized unstable 199Pt atoms and confirmed that the measured half-life was in good agreement with the reported value. Now KISS is ready for lifetime measurements of Pt, Ir, and Os isotopes around N = 126.

Published
2016
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36. 7Be- and 8B-reaction dynamics at Coulomb barrier energies

Author

Mazzocco M., Boiano A., Boiano C., La Commara M., Manea C., Parascandolo C., Pierroutsakou D., Signorini C., Strano E., Torresi D., Yamaguchi H., Kahl D., Acosta L., Di Meo P., Fernandez-Garcia J.P., Glodariu T., Grebosz J., Guglielmetti A., Imai N., Hirayama Y., Ishiyama H., Iwasa N., Jeong S.C., Jia H.M., Keeley N., Kim Y.H., Kimura S., Kubono S., Lay J.A., Lin C.J., Marquinez-Duran G., Martel I., Miyatake H., Mukai M., Nakao T., Nicoletto M., Pakou A., Rusek K., Sakaguchi Y., Sánchez-Benítez A.M., Sava T., Sgouros O., Stefanini C., Soramel F., Soukeras V., Stiliaris E., Stroe L., Teranishi T., Toniolo N., Wakabayashi Y., Watanabe Y.X., Yang L., and Yang Y.Y.

Subjects
Physics, QC1-999
Abstract

We investigated the reaction dynamics induced by the Radioactive Ion Beams 7Be and 8B on a 208Pb target at energies around the Coulomb barrier. The two measurements are strongly interconnected, being 7Be (Sα = 1.586 MeV) the loosely bound core of the even more exotic 8B (Sp = 0.1375 MeV) nucleus. Here we summarize the present status of the data analysis for the measurement of the elastic scattering process for both reactions and the preliminary results for the optical model analysis of the collected data.

Published
2016
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39. Gated multiple-sampling and tracking proportional chamber: New detector system for nuclear astrophysical study with radioactive nuclear beams

Author

Hashimoto, T., Ishiyama, H., Ishikawa, T., Kawamura, T., Nakai, K., Watanabe, Y.X., Miyatake, H., Tanaka, M.H., Fuchi, Y., Yoshikawa, N., Jeong, S.C., Katayama, I., Nomura, T., Furukawa, T., Mitsuoka, S., Nishio, K., Matsuda, M., Ikezoe, H., Fukuda, T., Das, S.K., Saha, P.K., Mizoi, Y., Komatsubara, T., Yamaguchi, M., and Tagishi, Y.

Published
2006
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40. Nuclear spectroscopy of r-process nuclei using KEK Isotope Separation System

Author

Hirayama, Y., primary, Watanabe, Y.X., additional, Mukai, M., additional, Ahmed, M., additional, Ishiyama, H., additional, Jeong, S.C., additional, Kakiguchi, Y., additional, Kimura, S., additional, Moon, J.Y., additional, Oyaizu, M., additional, Park, J.H., additional, Schury, P., additional, Wada, M., additional, and Miyatake, H., additional

Published
2020
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41. Present Status of KEK Isotope Separation System

Author

Hirayama Y., Jeong S.C., Watanabe Y.X., Imai N., Ishiyama H., Miyatake H., Oyaizu M., Kim Y.H., Mukai M., Sonoda T., Wada M., Huyse M., Kudryavtsev Yu., and Van Duppen P.

Subjects
Physics, QC1-999
Abstract

KISS (KEK Isotope Separation System) has been constructed at Nishina Re-search Center (NRC) of RIKEN to study the decay properties of heavy neutron-rich iso-topes with mass number around A∼200 along the neutron magic number of N = 126 for the astrophysical interest. The isotopes of interest will be produced by multi-nucleon transfer reactions in neutron-rich heavy ion collisions (e.g. 136Xe projectile on 198Pt target). KISS consists of a gas-cell system for thermalizing (stopping and neutralizing) and fast-transporting reaction products to the gas cell exit hole, a laser system for the res-onant ionization, and a mass-separator system followed by a detection system for the decay spectroscopy. KISS will allow us to study unknown isotopes produced in weak re-action channels under low background conditions. The off-line test of the KISS has been finished. As a next step, on-line test experiments have been performed to investigate the overall efficiency and selectivity of the system as a function of the injected 56Fe beam intensity from the RIKEN Ring Cyclotron (RRC).

Published
2014
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42. Light and heavy fragments mass correlation in the 197Au+130Te transfer reaction

Author

Galtarossa, F., Corradi, L., Szilner, S., Fioretto, E., Pollarolo, G., Mijatović, T., Montanari, D., Ackermann, D., Bourgin, D., Courtin, S., Fruet, G., Goasduff, A., Grebosz, J., Haas, F., Malenica, D.Jelavić, Jeong, S.C., Jia, H.M., John, P.R., Mengoni, D., Milin, M., Montagnoli, G., Scarlassara, F., Skukan, N., Soić, N., Stefanini, A.M., Strano, E., Tokić, V., Ur, C.A., Valiente-Dobón, J.J., Watanabe, Y.X., Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment, transfer reactions, heavy ions
Abstract

International audience; We studied multinucleon transfer (MNT) processes in the $^{197}$Au + $^{130}$Te at E$_{lab}$=1.07 GeV system coupling the PRISMA magnetic spectrometer to NOSE, an ancillary particle detector. We constructed a mass correlation matrix associating to each light fragment identified in PRISMA the corresponding mass distribution of the heavy partner detected in NOSE and, through the comparison with Monte Carlo simulations, we could infer about the role of neutron evaporation in multinucleon transfer reactions for the population of neutron-rich heavy nuclei.

Published
2019
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43. Elastic scattering for the B 8 and Be 7 + Pb 208 systems at near-Coulomb barrier energies

Author

Mazzocco, M. Keeley, N. Boiano, A. Boiano, C. La Commara, M. Manea, C. Parascandolo, C. Pierroutsakou, D. Signorini, C. Strano, E. Torresi, D. Yamaguchi, H. Kahl, D. Acosta, L. Di Meo, P. Fernandez-Garcia, J.P. Glodariu, T. Grebosz, J. Guglielmetti, A. Hirayama, Y. Imai, N. Ishiyama, H. Iwasa, N. Jeong, S.C. Jia, H.M. Kim, Y.H. Kimura, S. Kubono, S. La Rana, G. Lin, C.J. Lotti, P. Marquínez-Durán, G. Martel, I. Miyatake, H. Mukai, M. Nakao, T. Nicoletto, M. Pakou, A. Rusek, K. Sakaguchi, Y. Sánchez-Benítez, A.M. Sava, T. Sgouros, O. Soukeras, V. Soramel, F. Stiliaris, E. Stroe, L. Teranishi, T. Toniolo, N. Wakabayashi, Y. Watanabe, Y.X. Yang, L. Yang, Y.Y. Zhang, H.Q.

Abstract

The elastic scattering of the weakly bound radioactive nuclei B8 and Be7 from a Pb208 target was measured for the first time in the energy range around the Coulomb barrier. The data were analyzed using the optical model and the continuum discretized coupled channels (CDCC) formalisms. The reaction cross sections extracted from the optical model fits clearly indicate a remarkably enhanced reaction probability for the very weakly bound B8 (Sp=137.5keV) compared to similar mass nuclei interacting with the same target nucleus. CDCC calculations assuming a He3+He4 cluster model well described the Be7 experimental elastic scattering angular distributions, whereas the use of a Be7+p cluster model of B8 with an inert Be7 core gave a relatively poor description of the corresponding experimental data, suggesting that this model may be too simplistic and the possibility of core excitation should not be ignored. © 2019 American Physical Society. UK.

Published
2019

44. High-efficiency and low-background multi-segmented proportional gas counter for β-decay spectroscopy

Author

Mukai, M., primary, Hirayama, Y., additional, Watanabe, Y.X., additional, Schury, P., additional, Jung, H.S., additional, Ahmed, M., additional, Haba, H., additional, Ishiyama, H., additional, Jeong, S.C., additional, Kakiguchi, Y., additional, Kimura, S., additional, Moon, J.Y., additional, Oyaizu, M., additional, Ozawa, A., additional, Park, J.H., additional, Ueno, H., additional, Wada, M., additional, and Miyatake, H., additional

Published
2018
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45. 8B + 208Pb Elastic Scattering at Coulomb Barrier Energies

Author

La Commara, M., primary, Mazzocco, M., additional, Boiano, A., additional, Boiano, C., additional, Manea, C., additional, Parascandolo, C., additional, Pierroutsakou, D., additional, Signorini, C., additional, Strano, E., additional, Torresi, D., additional, Yamaguchi, H., additional, Kahl, D., additional, Di Meo, P., additional, Grebosz, J., additional, Imai, N., additional, Hirayama, Y., additional, Ishiyama, H., additional, Iwasa, N., additional, Jeong, S.C., additional, Jia, H.M., additional, Kim, Y.H., additional, Kimura, S., additional, Kubono, S., additional, Lin, C.J., additional, Miyatake, H., additional, Mukai, M., additional, Nakao, T., additional, Nicoletto, M., additional, Sakaguchi, Y., additional, Sánchez-Benítez, A.M., additional, Soramel, F., additional, Teranishi, T., additional, Wakabayashi, Y., additional, Watanabe, Y.X., additional, Yang, L., additional, and Yang, Y.Y., additional

Published
2018
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47. First Direct Mass Measurements of Nuclides around Z=100 with a Multireflection Time-of-Flight Mass Spectrograph

Author

Ito, Y., Schury, P., Wada, M., Arai, F., Haba, H., Hirayama, Y., Ishizawa, S., Kaji, D., Kimura, S., Koura, H., MacCormick, M., Miyatake, H., Moon, J.Y., Morimoto, K., Morita, K., Mukai, M., Murray, I., Niwase, T., Okada, K., Ozawa, A., Rosenbusch, M., Takamine, A., Tanaka, T., Watanabe, Y.X., Wollnik, H., Yamaki, S., Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Physique Nucléaire d'Orsay ( IPNO ), and Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS )

Subjects
Nuclear Theory, FOS: Physical sciences, [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment (nucl-ex), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear Experiment
Abstract

The masses of $^{246}$Es, $^{251}$Fm and the transfermium nuclei $^{249-252}$Md, and $^{254}$No, produced by hot- and cold-fusion reactions, in the vicinity of the deformed $N=152$ neutron shell closure, have been directly measured using a multireflection time-of-flight mass spectrograph. The masses of $^{246}$Es and $^{249,250,252}$Md were measured for the first time. Using the masses of $^{249,250}$Md as anchor points for $\alpha$ decay chains, the masses of heavier nuclei, up to $^{261}$Bh and $^{266}$Mt, were determined. These new masses were compared with theoretical global mass models and demonstrated to be in good agreement with macroscopic-microscopic models in this region. The empirical shell gap parameter $\delta_{2n}$ derived from three isotopic masses was updated with the new masses and corroborate the existence of the deformed $N=152$ neutron shell closure for Md and Lr.

Published
2018
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48. Superdeformation in asymmetric N>Z nucleus 40Ar

Author

Ideguchi, E., Ota, S., Morikawa, T., Oshima, M., Koizumi, M., Toh, Y., Kimura, A., Harada, H., Furutaka, K., Nakamura, S., Kitatani, F., Hatsukawa, Y., Shizuma, T., Sugawara, M., Miyatake, H., Watanabe, Y.X., Hirayama, Y., and Oi, M.

Subjects
Nuclear and High Energy Physics
Published
2010
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49. Important influence of single neutron stripping coupling on near-barrier 8Li + 90Zr quasi-elastic scattering

Author

Pakou, A. Keeley, N. Pierroutsakou, D. Mazzocco, M. Acosta, L. Aslanoglou, X. Boiano, A. Boiano, C. Carbone, D. Cavallaro, M. Grebosz, J. La Commara, M. Manea, C. Marquinez-Duran, G. Martel, I. Parascandolo, C. Rusek, K. Sánchez-Benítez, A.M. Sgouros, O. Signorini, C. Soramel, F. Soukeras, V. Stiliaris, E. Strano, E. Torresi, D. Trzcińska, A. Watanabe, Y.X. Yamaguchi, H.

Subjects
Nuclear Experiment
Abstract

Quasi-elastic scattering data were obtained for the radioactive nucleus 8Li on a 90Zr target at the near-barrier energy of 18.5MeV over the angular range $ \theta_{lab}=15^{\circ}$ to 80°. They were analyzed within the coupled channels and coupled reaction channels frameworks pointing to a strong coupling effect for single neutron stripping, in contrast to 6, 7Li + 90Zr elastic scattering at similar energies, a non-trivial result linked to detailed differences in the structure of these Li isotopes. © 2015, The Author(s).

Published
2015

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