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107 results on '"Hornung C"'

1. Study of multinucleon knockout reactions of exotic nuclei in the region of Sn

Author

Feijoo-Fontán M., Kudaibergenova E., Liblar I., Gasparic I., Horvat A., Rodriguez-Sanchez J.L., Panin V., Alvarez-Pol H., Atar L., Aumann T., Benlliure J., Boretzky K., Borge M.J.G., Bott L.T., Caesar C., Casarejos E., Cederkall J., Chatillon A., Cortina-Gil D., Filippo E., Dickel T., Duer M., Falduto A., Galaviz D., García-Jiménez G., Ge Z., Geraci E.I., Gernhäuser R., Gnoffo B., Graña-González A., Göbel K., Haettner E., Hartig A.L., Heil M., Heinz A., Hensel T., Holl M., Hornung C., Jedele A., Jelavic-Malenica D., Jenegger T., Ji L., Johansson H.T., Kalantar-Nayestanaki N., Kazantseva E., Kelic-Heil A., Kiselev O.A., Klenze P., Knoebel R., Körper D., Kröll T., Löher B., Martorana N.S., Milhomens da Fonseca L., Morfouace P., Mukha I., Murillo-Morales S., Nácher E., Nociforo C., Obertelli A., Paschalis S., Perea A., Petri M., Pietri S., Pirrone S., Ponnath L., Rhee H.B., Rose L., Rossi D.M., Russotto P., Savran D., Scheidenberger C., Simon H., Simon J.P., Storck-Dunite S., Stott A., Sun Y., Symochko D., Sürder C., Taïeb J., Taniuchi R., Tengblad O., Törnqvist H.T., Velardita S., Wamers F., Weick H., and Zhao J.

Subjects
Physics, QC1-999
Abstract

The experimental data collected during the S515 experiment performed by the R3B collaboration at GSI/FAIR represent a great opportunity to investigate nucleon knockout reactions of exotic nuclei in the region of Sn using complete kinematics measurements. These cross sections can be used in the future to investigate the quenching in the knockout of the minority species (neutrons or protons) in nuclei far from stability. Some of the arguments put forward are the underestimation of the knockout of deeply bound nucleons, final state interactions or the role of short-range correlations (SRC). Recently, several works based on inclusive measurements have shown that these SRCs could reduce the single nucleon knockout cross sections by around 50%, depending on the neutron excess (N/Z) of the initial projectile. The S515 data can help us to go further in this investigation because it allows to correlate the knockout cross sections of one, two or more nucleons with the number of protons and neutrons emitted from the target and which can be detected by the CALIFA and NeuLAND detectors, respectively, and perform complete kinematical studies on the nature of the event (SRC, evaporation, emission of clusters, final-state interactions...). Here the results obtained for the charge distribution of reaction residues are presented, which is one of the first steps of the still on-going analysis.

Published
2023
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2. Study of light hypernuclei in Europe: The hypertriton and nnΛ puzzles

Author

Rappold C., Achenbach P., Alibrahim Alfaki H., Amjad F., Armstrong M., Behr K.-H., Benlliure J., Brencic Z., Dickel T., Drozd V., Dubey S., Ekawa H., Escrig S., Feijoo-Fontan M., Fujioka H., Gao Y., Geissel H., Goldenbaum F., Graña Gonzalez A., Haettner E., Harakeh M. N., He Y., Heggen H., Hornung C., Hubbard N., Itahashi K., Iwasaki M., Kalantar-Nayestanaki N., Kasagi A., Kavatsyuk M., Kazantseva E., Khreptak A., Kindler B., Knoebel R., Kollmus H., Kostyleva D., Kraft-Bermuth S., Kurz N., Liu E., Lommel B., Metag V., Minami S., Morrissey D.J., Moskal P., Mukha I., Muneem A., Nakagawa M., Nakazawa K., Nociforo C., Ong H.J., Pietri S., Pochodzalla J., Purushothaman S., Rocco E., Rodríguez-Sánchez J.L., Roy P., Ruber R., Saito T.R., Schadmand S., Scheidenberger C., Schwarz P., Sekiya R., Serdyuk V., Skurzok M., Streicher B., Suzuki K., Szczepanczyk B., Tanaka Y. K., Tang X., Tortorelli N., Vencelj M., Wang H., Weber T., Weick H., Will M., Wimmer K., Yamamoto A., Yanai A., Yoshida J., and Zhao J.

Subjects
Physics, QC1-999
Abstract

The current understanding of light hypernuclei, which are sub-atomic nuclei with strangeness, is being challenged and studied in detail by several European research groups and collaborations. In recent years, studies of hypernuclei using high-energy heavy ion beams have reported unexpected results on the three-body hypernuclear state 3ΛH, named the hypertriton. For some time, reports of a shorter lifetime and larger binding energy than what was previously accepted have created a puzzling situation for its theoretical description; this is known as the "hypertriton puzzle". With the inclusion of the most recent experimental measurements, the current status of the hypertriton puzzle is evolving. Additionally, the possible neutral bound state of a Λ hyperon with two neutrons, nnΛ, has raised questions about our understanding of the formation of light hypernuclei either in bound or resonance states. These results have initiated several ongoing experimental programs all over the world to study these three-body hypernuclear states precisely. We are studying these light hypernuclear states by employing heavy ion beams at 2AGeV on a fixed carbon target with the WASA detector system and the Fragment Separator (FRS) at GSI. The WASA-FRS experimental campaign was performed during the first quarter of 2022, and this paper presents a short overview of the campaign and how it seeks to tackle the hypertriton and nnΛ puzzles. Data analysis is ongoing, and several preliminary results will be reported.

Published
2023
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3. First Full Beta-Strength Measurement With Dtas Across N=126 at Fair Phase-0

Author

Rodriguez-Garcia D., Tain J.L., Morales A.I., Aggez G., Agramunt J., Alaqeel M., Alayed B., Albers H.M., Alcala G., Algora A., Alharbi A., Alhomaidhi S., Amjad F., Arici T., Armstrong M., Bajzek M., Banerjee A., Bartram G., Benzoni G., Chen Z., Das B., Davinson T., Dickel T., Dillmann I., Domingo-Pardo C., Ekawa H., Ge Z., Gelletly W., Gerl J., Gorska M., Haettner E., Hall O., Herrmann P., Hornung C., Hubbard N., Jones C., Kazantseva E., Knoebel R., Kojouharov I., Kosir G., Kostyleva D., Kurtukian-Nieto T., Kurz N., Labiche M., Mccarter A., Mikolajczuk M., Mistry A. K., Mukha I., Nacher E., Nakagawa M., Nara-Singh B.S., Nishimura S., Orrigo S. E. A., Papadakis P., Pietri S., Plass W., Podolyak Z., Polettini M., Prajapat R., Rocco E., Rubio B., Sahin E., Satrazani M., Schafner H., Scheidenberger C., Sharma A., Tanaka Y.K., Tolosa-Delgado A., Vencelj M., Vesic J., Vi P., Victoria J.A., Weick H., Wimmer K., Wollersheim H.J., Yaneva A.A., and Zhao J.J.

Subjects
Physics, QC1-999
Abstract

An experiment was performed at GSI with the objective of measuring theβ-intensity distribution in the decay of Hg, Au and Pt isotopes around N=126 using the total absorption gamma-ray spectroscopy technique. The aim is to benchmark theoretical models used to make predictions of half-life and neutron emission probabilities of exotic nuclei involved in the rapid neutron capture process, leading to the synthesis of very heavy elements. This paper presents some experimental details and the current status of the analysis.

Published
2023
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4. First investigation on the isomeric ratio in multinucleon transfer reactions: Entrance channel effects on the spin distribution

Author

Kumar, D., Dickel, T., Zadvornaya, A., Beliuskin, O., Kankainen, A., Constantin, P., Purushothaman, S., Spataru, A., Stryjczyk, M., Ayoubi, L. Al, Brunet, M., Canete, L., Delafosse, C., de Groote, R. P., de Roubin, A., Eronen, T., Ge, Z., Gins, W., Hornung, C., Hukkanenc, M., Sison, A. Illana, Jokinen, A., Kahl, D., Kindler, B., Lommel, B., Mardor, I., Moore, I. D., Nesterenko, D. A., Nichita, D., Nikas, S., Ortiz-Cortes, A., Penttilä, H., Podolyák, Zs., Pohjalainen, I., Raggio, A., Reponen, M., Rinta-Antila, S., Romero, J., Vilen, M., Virtanen, V., Weaver, A., and Winfield, J.

Subjects
Nuclear Experiment
Abstract

The multinucleon transfer (MNT) reaction approach was successfully employed for the first time to measure the isomeric ratios (IRs) of $^{211}$Po (25/2$^+$) isomer and its (9/2$^+$) ground state at the IGISOL facility using a 945 MeV $^{136}$Xe beam impinged on $^{209}$Bi and $^{\rm nat}$Pb targets. The dominant production of isomers compared to the corresponding ground states was consistently revealed in the $\alpha$-decay spectra. Deduced IR of $^{211}$Po populated through the $^{136}$Xe+$^{\rm nat}$Pb reaction was found to enhance $\approx$1.8-times than observed for $^{136}$Xe+$^{209}$Bi. State-of-the-art Langevin-type model calculations have been utilized to estimate the spin distribution of an MNT residue. The computations qualitatively corroborate with the considerable increase in IRs of $^{211}$Po produced from $^{136}$Xe+$^{\rm nat}$Pb compared to $^{136}$Xe+$^{209}$Bi. Theoretical investigations indicate a weak influence of target spin on IRs. The enhancement of the $^{211}$Po isomer in the $^{136}$Xe+$^{\rm nat}$Pb over $^{136}$Xe+$^{209}$Bi can be attributed to the different proton ($p$)-transfer production routes. Estimations demonstrate an increment in the angular momentum transfer, favorable for isomer production, with increasing projectile energy. Comparative analysis indicates the two entrance channel parameters, projectile mass and $p$-transfer channels, strongly influencing the population of the high-spin isomer of $^{211}$Po (25/2$^+$). This is the first experimental and theoretical investigation on the IRs of nuclei produced via different channels of MNT reactions, with the latter quantitatively underestimating the former by a factor of two., Comment: 5 figures

Published
2024
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6. A compact start time counter using plastic scintillators readout with MPPC arrays for the WASA-FRS HypHI experiment

Author

Liu, E., Drozd, V., Ekawa, H., Escrig, S., Gao, Y., He, Y., Kasagi, A., Nakagawa, M., Ong, H., Rappold, C., Sekiya, R., Saito, T.R., Tang, X., Tanaka, Y.K., Wang, H., Yanai, A., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K.-H., Benlliure, J., Brencic, Z., Dickel, T., Dubey, S., Feijoo-Fontán, M., Fujioka, H., Geissel, H., Goldenbaum, F., González, A. Graña, Haettner, E., Harakeh, M.N., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Lommel, B., Minami, S., Morrissey, D.J., Moskal, P., Mukha, I., Muneem, A., Nakazawa, K., Nociforo, C., Pietri, S., Pochodzalla, J., Purushothaman, S., Rocco, E., Rodríguez-Sánchez, J.L., Roy, P., Ruber, R., Schadmand, S., Scheidenberger, C., Schwarz, P., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tortorelli, N., Vencelj, M., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yoshida, J., and Zhao, J.

Published
2024
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7. Novel device to study double-alpha decay at the FRS Ion Catcher

Author

Varga, L., Wilsenach, H., Hall, O., Dickel, T., Reiter, M.P., Amanbayev, D., Davinson, T., Morrissey, D.J., Pohjalainen, I., Tortorelli, N., Yu, J., Zhao, J., Ayet, S., Beck, S., Bergmann, J., Ge, Z., Geissel, H., Heitz, L., Hornung, C., Kalantar-Nayestanaki, N., Khan, E., Kripko-Koncz, G., Mardor, I., Narang, M., Plass, W., Scheidenberger, C., Simonov, M., Singh, S.K., State, A., Theisen, C., Vandebrouck, M., and Woods, P.J.

Published
2024
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8. Quasi-real-time range monitoring by in-beam PET: a case for 15O

Author

Purushothaman, S., Kostyleva, D., Dendooven, P., Haettner, E., Geissel, H., Schuy, C., Weber, U., Boscolo, D., Dickel, T., Graeff, C., Hornung, C., Kazantseva, E., Kuzminchuk-Feuerstein, N., Mukha, I., Pietri, S., Roesch, H., Tanaka, Y. K., Zhao, J., Durante, M., Parodi, K., and Scheidenberger, C.

Published
2023
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9. Increasing the rate capability for the cryogenic stopping cell of the FRS Ion Catcher

Author

Zhao, J.W., Amanbayev, D., Dickel, T., Miskun, I., Plaß, W.R., Tortorelli, N., San Andrés, S. Ayet, Beck, S., Bergmann, J., Brencic, Z., Constantin, P., Geissel, H., Greiner, F., Gröf, L., Hornung, C., Kuzminchuk, N., Kripkó-Koncz, G., Mardor, I., Pohjalainen, I., Scheidenberger, C., Thirolf, P.G., Bagchi, S., Haettner, E., Kazantseva, E., Kostyleva, D., Oberstedt, A., Pietri, S., Reiter, M.P., Tanaka, Y.K., Wada, M., Balabanski, D.L., Benyamin, D., Harakeh, M.N., Hubbard, N., Kalantar-Nayestanaki, N., Mollaebrahimi, A., Mukha, I., Narang, M., Niwase, T., Patyk, Z., Purushothaman, S., Rotaru, A., Spǎtaru, A., Stanic, G., Vencelj, M., Weick, H., and Yu, J.

Published
2024
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11. The WASA-FRS project at GSI and its perspective

Author

Saito, T.R., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K.-H., Benlliure, J., Brencic, Z., Dickel, T., Drozd, V., Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontán, M., Fujioka, H., Gao, Y., Geissel, H., Goldenbaum, F., González, A. Graña, Haettner, E., Harakeh, M.N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Lommel, B., Metag, V., Minami, S., Morrissey, D.J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H.J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodríguez-Sánchez, J.L., Roy, P., Ruber, R., Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tanaka, Y.K., Tang, X., Tortorelli, N., Vencelj, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., and Zhao, J.

Published
2023
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12. Storage, accumulation and deceleration of secondary beams for nuclear astrophysics

Author

Glorius, J., Litvinov, Yu. A., Aliotta, M., Amjad, F., Brückner, B., Bruno, C.G., Chen, R., Davinson, T., Dellmann, S.F., Dickel, T., Dillmann, I., Erbacher, P., Forstner, O., Geissel, H., Griffin, C.J., Grisenti, R., Gumberidze, A., Haettner, E., Hess, R., Hillenbrand, P.-M., Hornung, C., Joseph, R., Jurado, B., Kazanseva, E., Knöbel, R., Kostyleva, D., Kozhuharov, C., Kuzminchuk, N., Langer, C., Leckenby, G., Lederer-Woods, C., Lestinsky, M., Litvinov, S., Löher, B., Lorenz, B., Lorenz, E., Marsh, J., Menz, E., Morgenroth, T., Mukha, I., Petridis, N., Popp, U., Psaltis, A., Purushothaman, S., Reifarth, R., Rocco, E., Roy, P., Sanjari, M.S., Scheidenberger, C., Sguazzin, M., Sidhu, R.S., Spillmann, U., Steck, M., Stöhlker, T., Swartz, J.A., Tanaka, Y.K., Törnqvist, H., Varga, L., Vescovi, D., Weick, H., Weigand, M., Woods, P.J., Yamaguchi, T., and Zhao, J.

Published
2023
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13. Production and separation of positron emitters for hadron therapy at FRS-Cave M

Author

Haettner, E., Geissel, H., Franczak, B., Kostyleva, D., Purushothaman, S., Tanaka, Y.K., Amjad, F., Boscolo, D., Dickel, T., Graeff, C., Hessler, C., Hornung, C., Kazantseva, E., Kuzminchuk, N., Morrissey, D., Mukha, I., Pietri, S., Rocco, E., Roy, P., Roesch, H., Schuy, C., Schütt, P., Weber, U., Weick, H., Zhao, J., Durante, M., Parodi, K., and Scheidenberger, C.

Published
2023
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14. The slow control system of the FRS Ion Catcher

Author

State, A.N., Beck, S., Amanbayev, D., Balabanski, D.L., Brand, H., Constantin, P., Dickel, T., Hornung, C., Nichita, D., Plaß, W.R., Roesch, H., Rotaru, A., Scheidenberger, C., Siebring, J., Spataru, A., Tortorelli, N., and Zhao, J.

Published
2022
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15. First coupling of the FRS particle identification and the FRS-Ion Catcher data acquisition systems: The case of 109In

Author

Spătaru, A., Hornung, C., Dickel, T., Haettner, E., Pietri, S., Ayet San Andrés, S., Bagchi, S., Balabanski, D.L., Bergmann, J., Ebert, J., Finley, A., Geissel, H., Greiner, F., Hall, O., Kaur, S., Lippert, W., Miskun, I., Otto, J.-H., Plaß, W.R., Prochazka, A., Purushothaman, S., Rappold, C., Rink, A.-K., Scheidenberger, C., Tanaka, Y.K., Toernqvist, H., Weick, H., and Winfield, J.S.

Published
2022
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16. The DESPEC setup for GSI and FAIR

Author

Mistry, A.K., Albers, H.M., Arıcı, T., Banerjee, A., Benzoni, G., Cederwall, B., Gerl, J., Górska, M., Hall, O., Hubbard, N., Kojouharov, I., Jolie, J., Martinez, T., Podolyák, Zs., Regan, P.H., Tain, J.L., Tarifeno-Saldivia, A., Schaffner, H., Werner, V., Ağgez, G., Agramunt, J., Ahmed, U., Aktas, O., Alcayne, V., Algora, A., Alhomaidhi, S., Amjad, F., Appleton, C., Armstrong, M., Balogh, M., Banerjee, K., Bednarczyk, P., Benito, J., Bhattacharya, C., Black, P., Blazhev, A., Bottoni, S., Boutachkov, P., Bracco, A., Bruce, A.M., Brunet, M., Bruno, C.G., Burrows, I., Calvino, F., Canavan, R.L., Cano-Ott, D., Chishti, M.M.R., Coleman-Smith, P., Cortés, M.L., Cortes, G., Crespi, F., Das, B., Davinson, T., De Blas, A., Dickel, T., Doncel, M., Ertoprak, A., Esmaylzadeh, A., Fornal, B., Fraile, L.M., Galtarossa, F., Gottardo, A., Guadilla, V., Ha, J., Haettner, E., Häfner, G., Heggen, H., Herrmann, P., Hornung, C., Jazrawi, S., John, P.R., Jokinen, A., Jones, C.E., Kahl, D., Karayonchev, V., Kazantseva, E., Kern, R., Knafla, L., Knöbel, R., Koseoglou, P., Kosir, G., Kostyleva, D., Kurz, N., Kuzminchuk, N., Labiche, M., Lawson, J., Lazarus, I., Lenzi, S.M., Leoni, S., Llanos-Expósito, M., Lozeva, R., Maj, A., Meena, J.K., Mendoza, E., Menegazzo, R., Mengoni, D., Mertzimekis, T.J., Mikolajczuk, M., Million, B., Mont-Geli, N., Morales, A.I., Morral, P., Mukha, I., Murias, J.R., Nacher, E., Napiralla, P., Napoli, D.R., Nara-Singh, B.S., O’Donnell, D., Orrigo, S.E.A., Page, R.D., Palit, R., Pallas, M., Pellumaj, J., Pelonis, S., Pentilla, H., Pérez de Rada, A., Pérez-Vidal, R.M., Petrache, C.M., Pietralla, N., Pietri, S., Pigliapoco, S., Plaza, J., Polettini, M., Porzio, C., Pucknell, V.F.E., Recchia, F., Reiter, P., Rezynkina, K., Rinta-Antila, S., Rocco, E., Rösch, H.A., Roy, P., Rubio, B., Rudigier, M., Ruotsalainen, P., Saha, S., Şahin, E., Scheidenberger, Ch., Seddon, D.A., Sexton, L., Sharma, A., Si, M., Simpson, J., Smith, A., Smith, R., Söderström, P.A., Sood, A., Soylu, A., Tanaka, Y.K., Valiente-Dobón, J.J., Vasileiou, P., Vasiljevic, J., Vesic, J., Villamarin, D., Weick, H., Wiebusch, M., Wiederhold, J., Wieland, O., Wollersheim, H.J., Woods, P.J., Yaneva, A., Zanon, I., Zhang, G., Zhao, J., Zidarova, R., Zimba, G., and Zyriliou, A.

Published
2022
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18. Measurement of excitation spectra in the ${}^{12}$C$(p,d)$ reaction near the $\eta'$ emission threshold

Author

Tanaka, Y. K., Itahashi, K., Fujioka, H., Ayyad, Y., Benlliure, J., Brinkmann, K. -T., Friedrich, S., Geissel, H., Gellanki, J., Guo, C., Gutz, E., Haettner, E., Harakeh, M. N., Hayano, R. S., Higashi, Y., Hirenzaki, S., Hornung, C., Igarashi, Y., Ikeno, N., Iwasaki, M., Jido, D., Kalantar-Nayestanaki, N., Kanungo, R., Knöbel, R., Kurz, N., Metag, V., Mukha, I., Nagae, T., Nagahiro, H., Nanova, M., Nishi, T., Ong, H. J., Pietri, S., Prochazka, A., Rappold, C., Reiter, M. P., Rodríguez-Sánchez, J. L., Scheidenberger, C., Simon, H., Sitar, B., Strmen, P., Sun, B., Suzuki, K., Szarka, I., Takechi, M., Tanihata, I., Terashima, S., Watanabe, Y. N., Weick, H., Widmann, E., Winfield, J. S., Xu, X., Yamakami, H., and Zhao, J.

Subjects
Nuclear Experiment
Abstract

Excitation spectra of $^{11}$C were measured in the $^{12}$C$(p,d)$ reaction near the $\eta'$ emission threshold. A proton beam extracted from the synchrotron SIS-18 at GSI with an incident energy of 2.5 GeV impinged on a carbon target. The momenta of deuterons emitted at 0 degrees were precisely measured with the fragment separator FRS operated as a spectrometer. In contrast to theoretical predictions on the possible existence of deeply bound $\eta'$ mesic states in carbon nuclei, no distinct structures were observed associated with the formation of bound states. The spectra were analyzed to set stringent constraints on the formation cross section and on the hitherto barely-known $\eta'$-nucleus interaction., Comment: 6 pages, 4 figures

Published
2016
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19. Improved beam diagnostics and optimization at ISAC via TITAN’s MR-TOF-MS

Author

Reiter, M.P., Ames, F., Andreoiu, C., Ayet San Andrés, S., Babcock, C., Barquest, B.R., Bergmann, J., Bollig, J., Brunner, T., Dickel, T., Dilling, J., Dillmann, I., Dunling, E., Finlay, A., Gwinner, G., Graham, L., Hornung, C., Kootte, B., Klawitter, R., Kunz, P., Lan, Y., Lascar, D., Lassen, J., Leistenschneider, E., Li, R., McKay, J.E., Mostamand, M., Paul, S.F., Plaß, W.R., Scheidenberger, C., Schultz, B.E., Steinbrügge, R., Teigelhoefer, A., Thompson, R., Wieser, M.E., Will, C., and Kwiatkowski, A.A.

Published
2020
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21. Rate capability of a cryogenic stopping cell for uranium projectile fragments produced at 1000 MeV/u

Author

Reiter, M.P., Rink, A.-K., Dickel, T., Haettner, E., Heiße, F., Plaß, W.R., Purushothaman, S., Amjad, F., Ayet San Andrés, S., Bergmann, J., Blum, D., Dendooven, P., Diwisch, M., Ebert, J., Geissel, H., Greiner, F., Hornung, C., Jesch, C., Kalantar-Nayestanaki, N., Knöbel, R., Lang, J., Lippert, W., Miskun, I., Moore, I.D., Nociforo, C., Petrick, M., Pietri, S., Pfützner, M., Pohjalainen, I., Prochazka, A., Scheidenberger, C., Takechi, M., Tanaka, Y.K., Weick, H., Winfield, J.S., and Xu, X.

Published
2016
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23. Quasi-real-time range monitoring by in-beam PET: a case for 15O.

Author

Purushothaman, S., Kostyleva, D., Dendooven, P., Haettner, E., Geissel, H., Schuy, C., Weber, U., Boscolo, D., Dickel, T., Graeff, C., Hornung, C., Kazantseva, E., Kuzminchuk-Feuerstein, N., Mukha, I., Pietri, S., Roesch, H., Tanaka, Y. K., Zhao, J., Durante, M., and Parodi, K.

Subjects
LINEAR energy transfer, ION beams, POSITRON annihilation, POSITRON emission tomography, POSITRONS, PRODUCTION methods
Abstract

A fast and reliable range monitoring method is required to take full advantage of the high linear energy transfer provided by therapeutic ion beams like carbon and oxygen while minimizing damage to healthy tissue due to range uncertainties. Quasi-real-time range monitoring using in-beam positron emission tomography (PET) with therapeutic beams of positron-emitters of carbon and oxygen is a promising approach. The number of implanted ions and the time required for an unambiguous range verification are decisive factors for choosing a candidate isotope. An experimental study was performed at the FRS fragment-separator of GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany, to investigate the evolution of positron annihilation activity profiles during the implantation of 14 O and 15 O ion beams in a PMMA phantom. The positron activity profile was imaged by a dual-panel version of a Siemens Biograph mCT PET scanner. Results from a similar experiment using ion beams of carbon positron-emitters 11 C and 10 C performed at the same experimental setup were used for comparison. Owing to their shorter half-lives, the number of implanted ions required for a precise positron annihilation activity peak determination is lower for 10 C compared to 11 C and likewise for 14 O compared to 15 O, but their lower production cross-sections make it difficult to produce them at therapeutically relevant intensities. With a similar production cross-section and a 10 times shorter half-life than 11 C, 15 O provides a faster conclusive positron annihilation activity peak position determination for a lower number of implanted ions compared to 11 C. A figure of merit formulation was developed for the quantitative comparison of therapy-relevant positron-emitting beams in the context of quasi-real-time beam monitoring. In conclusion, this study demonstrates that among the positron emitters of carbon and oxygen, 15 O is the most feasible candidate for quasi-real-time range monitoring by in-beam PET that can be produced at therapeutically relevant intensities. Additionally, this study demonstrated that the in-flight production and separation method can produce beams of therapeutic quality, in terms of purity, energy, and energy spread. [ABSTRACT FROM AUTHOR]

Published
2023
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25. Spectroscopy of η′-nucleus bound states at GSI and FAIR — very preliminary results and future prospects —

Author

Fujioka, H., Ayyad, Y., Benlliure, J., Brinkmann, K.-T., Friedrich, S., Geissel, H., Gellanki, J., Guo, C., Gutz, E., Haettner, E., Harakeh, M. N., Hayano, R. S., Higashi, Y., Hirenzaki, S., Hornung, C., Igarashi, Y., Ikeno, N., Itahashi, K., Iwasaki, M., Jido, D., Kalantar-Nayestanaki, N., Kanungo, R., Knoebel, R., Kurz, N., Metag, V., Mukha, I., Nagae, T., Nagahiro, H., Nanova, M., Nishi, T., Ong, H. J., Pietri, S., Prochazka, A., Rappold, C., Reiter, M. P., Rodríguez-Sánchez, J. L., Scheidenberger, C., Simon, H., Sitar, B., Strmen, P., Sun, B., Suzuki, K., Szarka, I., Takechi, M., Tanaka, Y. K., Tanihata, I., Terashima, S., Watanabe, Y. N., Weick, H., Widmann, E., Winfield, J. S., Xu, X., Yamakami, H., Zhao, J., and for the Super-FRS Collaboration

Published
2015
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26. Precision of the PET activity range during irradiation with 10 C, 11 C, and 12 C beams.

Author

Kostyleva, D, Purushothaman, S, Dendooven, P, Haettner, E, Geissel, H, Ozoemelam, I, Schuy, C, Weber, U, Boscolo, D, Dickel, T, Drozd, V, Graeff, C, Franczak, B, Hornung, C, Horst, F, Kazantseva, E, Kuzminchuk-Feuerstein, N, Mukha, I, Nociforo, C, and Pietri, S

Subjects
ION beams, IRRADIATION, ION bombardment, POSITRON emission tomography, POSITRON beams, STATISTICAL accuracy, CARBON isotopes, SQUARE root
Abstract

Objective. Beams of stable ions have been a well-established tool for radiotherapy for many decades. In the case of ion beam therapy with stable 12C ions, the positron emitters 10,11C are produced via projectile and target fragmentation, and their decays enable visualization of the beam via positron emission tomography (PET). However, the PET activity peak matches the Bragg peak only roughly and PET counting statistics is low. These issues can be mitigated by using a short-lived positron emitter as a therapeutic beam. Approach. An experiment studying the precision of the measurement of ranges of positron-emitting carbon isotopes by means of PET has been performed at the FRS fragment-separator facility of GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany. The PET scanner used in the experiment is a dual-panel version of a Siemens Biograph mCT PET scanner. Main results. High-quality in-beam PET images and activity distributions have been measured from the in-flight produced positron emitting isotopes 11C and 10C implanted into homogeneous PMMA phantoms. Taking advantage of the high statistics obtained in this experiment, we investigated the time evolution of the uncertainty of the range determined by means of PET during the course of irradiation, and show that the uncertainty improves with the inverse square root of the number of PET counts. The uncertainty is thus fully determined by the PET counting statistics. During the delivery of 1.6 × 107 ions in 4 spills for a total duration of 19.2 s, the PET activity range uncertainty for 10C, 11C and 12C is 0.04 mm, 0.7 mm and 1.3 mm, respectively. The gain in precision related to the PET counting statistics is thus much larger when going from 11C to 10C than when going from 12C to 11C. The much better precision for 10C is due to its much shorter half-life, which, contrary to the case of 11C, also enables to include the in-spill data in the image formation. Significance. Our results can be used to estimate the contribution from PET counting statistics to the precision of range determination in a particular carbon therapy situation, taking into account the irradiation scenario, the required dose and the PET scanner characteristics. [ABSTRACT FROM AUTHOR]

Published
2023
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29. Nuclear Structure Studies with High-Precision Mass Measurements of Spontaneous Fission Fragments at the FRS Ion Catcher.

Author

Spătaru, A., Amanbayev, D., Ayet, S., Balabanski, D. L., Beck, S., Bergmann, J., Constantin, P., Dickel, T., Geissel, H., Hornung, C., Kalantar-Nayestanaki, N., Kripko-Koncz, G., Mardor, I., Mollaebrahimi, A., Plaß, W. R., Scheidenberger, C., Wasserheß, M., and Zhao, J.

Subjects
NUCLEAR shell theory, MASS measurement, DAUGHTER ions, ATOMIC mass, TIME-of-flight mass spectrometers, NUCLEAR structure
Abstract

Nuclear mass is a key property of atomic nuclei. The accurate determination of nuclear masses provides information for the nuclear shell structure and nuclear deformations. The FRS Ion Catcher experimental setup at GSI, Darmstadt was used to perform mass measurements of 252Cf fragments using a multiple-reflection time-of-flight mass spectrometer. The reported results are compared to previous measurements and their implication in the estimation of two-neutron separation energy is discussed. [ABSTRACT FROM AUTHOR]

Published
2021

34. 78

Author

Kovarik, Alois F., Philbrick, P. H., and Hornung, C.

Published
1899
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35. PRODUCTION OF EXOTIC NUCLEI VIA MNT REACTIONS USING GAS CELLS.

Author

SPATARU, A., BALABANSKI, D. L., BELIUSKINA, O., CONSTANTIN, P., DICKEL, T., HORNUNG, C., KANKAINEN, A., KARPOV, A. V., NICHITA, D., PLASS, W., PURUSHOTHAMAN, S., ROTARU, A., SAIKO, V. V., STATE, A., WINFIELD, J. S., and ZADVORNAYA, A.

Subjects
EXOTIC nuclei, HEAVY nuclei, GASES, CELLS
Abstract

The use of multi-nucleon transfer (MNT) reactions to produce neutronrich nuclei in the heavy region has received an increased attention in the last decade. The feasibility of employing such reactions at the FRS Ion Catcher facility at GSI and the IGISOL facility at JYFL is studied using a combination of theoretical calculations and experiment simulations. The reactions are computed within a Langevin-type model, and the Geant program is used to simulate the transport of the resulting products within the experimental setups of the above-mentioned facilities. The angular distribution of ion release, possible target choices and target-to-beam-dump distances are discussed. [ABSTRACT FROM AUTHOR]

Published
2020
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36. SPECTROSCOPY OF η'-MESIC NUCLEI WITH WASA AT GSI/FAIR.

Author

TANAKA, Y. K., BAGCHI, S., BENLLIURE, J., DICKEL, T., DROZDA, V., EKAWA, H., FUJIOKA, H., GEISSEL, H., GOLDENBAUM, F., GUO, C., HAETTNER, E., HARAKEH, M. N., HAYANO, R. S., HIRENZAKI, S., HORNUNG, C., IGARASHI, Y., IKENO, N., ITAHASHI, K., IWASAKI, M., and JIDO, D.

Subjects
PROTON decay, PROTON beams, SPECTROMETRY, MESONS, MACHINE separators, DETECTORS
Abstract

We plan to conduct an experimental search for η'-mesic nuclei in order to investigate in-medium properties of the η' meson. A 2.5 GeV proton beam is employed to produce η'-mesic 11C nuclei with the 12C(p,d)η' 11C reaction. Simultaneous measurements of the forward ejected deuterons and decay protons from η'-mesic nuclei will allow us to achieve high experimental sensitivity. The experiment will be performed at GSI by making full use of the fragment separator FRS and the WASA detector system. The plan of this proposed experiment is described. [ABSTRACT FROM AUTHOR]

Published
2020
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38. Metagenome-derived clones encoding two novel lactonase family proteins involved in biofilm inhibition in Pseudomonas aeruginosa

Author

Schipper, C., Hornung, C., Bijtenhoorn, P., Quitschau, M., Grond, S., and Streit, W.R.

Subjects
Methanobacteriaceae -- Genetic aspects, Microbial mats -- Composition, Pseudomonas aeruginosa -- Genetic aspects, Quorum sensing -- Usage, Serine -- Chemical properties, Biological sciences
Abstract

The isolation and characterization of three metagenome-derived clones that interfere with bacterial quorum sensing and degrade N-(3-oxooctanoyl)-L-homoserine lactone (3-oxo-[C.sub.8]-HSL) is described. This is the first study in which metagenome-derived proteins are expressed in Pseudomonas aeruginosa to successfully inhibit the formation of biofilms.

Published
2009

40. 130

Author

Scheffer, J., Heal, W. E., and Hornung, C.

Published
1902
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41. 111

Author

Drane, Walter H., Hornung, C., Berg, P. S., Scheffer, J., and Zerr, G. B. M.

Published
1901
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42. 108

Author

Colaw, John M., Hornung, C., Whitaker, H. C., Young, J. W., Berg, P. S., and Dorrance,, D. G.

Published
1901
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43. 60

Author

Wright, S. Hart, Arnold, John M., and Hornung, C.

Published
1898
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44. 105

Author

Finkel, B. F., Hornung, C., and Zerr, G. B. M.

Published
1899
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45. 80

Author

Finkel, B. F., Hornung, C., Schuyler, Elmer, and Scheffer, J.

Published
1899
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46. 106

Author

Hornung, C., Zerr, G. B. M., Scheffer, J., Hopkins, G. I., Ellwood, J. K., and Cross, Charles C.

Published
1899
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47. 82

Author

Kovarik, Alois F., Hornung, C., Collier, Guy B., Scheffer, J., Landis, W. W., Whitaker, H. C., Zerr, G. B. M., Westcott, O. S., Meyers, Chas E., Roray, Nelson L., Cross, Chas C., Schuyler, Elmer, Drummond, J. H., and Schmitt, Cooper D.

Published
1899
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48. 113

Author

Palmer, T. W., Hornung, C., Gruber, M. A., Scheffer, J., Schmitt, Cooper D., Nagle, J. C., and Mahoney, J. O.

Published
1899
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49. 93

Author

Schuyler, Elmer, Hornung, C., Gaines, R. E., Bell, A. H., Scheffer, J., Hopkins, G. I., Zerr, G. B. M., Berg, P. S., Boorman, J. M., Drane, W. H., Kovarik, Alois F., Meyers, Charles E., Herrick, H. N., Roray, Nelson L., and Scales, E. D.

Published
1899
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50. FIRST RESULTS ON THE EXPERIMENTAL SEARCH FOR ′-MESIC NUCLEI WITH THE 12C(p; d) REACTION.

Author

TANAKA, Y. K., AYYAD, Y., BENLLIURE, J., BRINKMANN, K. -T., FRIEDRICH, S., FUJIOKA, H., GEISSEL, H., GELLANKI, J., GUO, C., GUTZ, E., HAETTNER, E., HARAKEH, M. N., HAYANO, R. S., HIGASHI, Y., HIRENZAKI, S., HORNUNG, C., IGARASHI, Y., IKENO, N., ITAHASHI, K., and IWASAKI, M.

Subjects
SPECTRUM analysis, MASS spectrometry, MESON spectroscopy, MESON detection, DISSOCIATION (Chemistry)
Abstract

We performed a missing-mass spectroscopy experiment of the 12C(p,d) reaction in order to search for η′-mesic nuclei. Excitation spectrum of 11C around the η′-meson production threshold was successfully obtained with a high-statistical sensitivity and sufficiently good energy resolution. Since no peak structure associated with the formation of η′-mesic nuclei was observed, we set constraints on the formation cross sections of η′-mesic states and on the η′-nucleus interaction. [ABSTRACT FROM AUTHOR]

Published
2017
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