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Your search keyword '"Geissel, H."' showing total 5 results
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5 results on '"Geissel, H."'

1. Observation and spectroscopy of proton-unbound nucleus $^{21}$Al

Author

Kostyleva, D., Xu, X. -D., Mukha, I., Acosta, L., Bajzek, M., Casarejos, E., Ciemny, A. A., Cortina-Gil, D., Dominik, W., Dueñas, J. A., Espino, J. M., Estradé, A., Farinon, F., Fomichev, A., Geissel, H., Gómez-Camacho, J., Gorshkov, A., Grigorenko, L. V., Janas, Z., Kamiński, G., Kiselev, O., Knöbel, R., Korsheninnikov, A. A., Krupko, S., Kuich, M., Kurz, N., Litvinov, Yu. A., Marquinez-Durán, G., Martel, I., Mazzocchi, C., Nikolskii, E. Yu., Nociforo, C., Ordúz, A. K., Pfützner, M., Pietri, S., Pomorski, M., Prochazka, A., Rodríguez-Tajes, C., Rymzhanova, S., Sánchez-Benítez, A. M., Scheidenberger, C., Simon, H., Sitar, B., Slepnev, R., Stanoiu, M., Strmen, P., Sümmerer, K., Szarka, I., Takechi, M., Tanaka, Y. K., Weick, H., Winfield, J. S., Woods, P. J., and Zhukov, M. V.

Subjects
Nuclear Experiment
Abstract

We report on the observation of previously-unknown isotope $^{21}$Al, the first unbound aluminum isotope located beyond the proton dripline. The $^{21}$Al nucleus decays by one-proton (1p) emission, and its in-flight decays were detected by tracking trajectories of all decay products with micro-strip silicon detectors. The 1p-emission processes were studied by analyses of the measured angular correlations of decay products $^{20}$Mg+p. The 1p-decay energies of ground and low-lying excited states of $^{21}$Al, its mass excess and proton separation energy value $S_p$=$-1.1(1)$ MeV were determined., Comment: 6 pages, 7 figures

Published
2024

2. A new approach for deducing rms proton radii from charge-changing reactions of neutron-rich nuclei and the reaction-target dependence

Author

Zhang, J. -C., Sun, B. -H., Tanihata, I., Kanungo, R., Scheidenberger, C., Terashima, S., Wang, Feng, Ameil, F., Atkinson, J., Ayyad, Y., Bagchi, S., Cortina-Gil, D., Dillmann, I., Estrade, A., Evdokimov, A., Farinon, F., Geissel, H., Guastalla, G., Janik, R., Kaur, S., Knobel, R., Kurcewicz, J., Litvinov, Yu. A., Marta, M., Mostazo, M., Mukha, I., Nociforo, C., Ong, H. J., Pietri, S., Prochazka, A., Sitar, B., Strmen, P., Takechi, M., Tanaka, J., Vargas, J., Weick, H., Winfield, J. S., and Collaboration, the Super-FRS Experiment

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

We report the charge-changing cross sections ($\sigma_{\text{cc}}$) of 24 $p$-shell nuclides on both hydrogen and carbon at about 900$A$ MeV, of which $^{8,9}$Li, $^{10\textendash12}$Be, $^{10,14,15}$B, $^{14,15,17\textendash22}$N and $^{16}$O on hydrogen and $^{8,9}$Li on carbon are for the first time. Benefiting from the data set,we found a new and robust relationship between the scaling factor of the Glauber model calculations and the separation energies of the nuclei of interest on both targets.This allows us to deduce proton radii ($R_p$) for the first time from the cross sections on hydrogen. Nearly identical $R_p$ values are deduced from both target data for the neutron-rich carbon isotopes, however, the $R_p$ from the hydrogen target is systematically smaller in the neutron-rich nitrogen isotopes.This calls for further experimental and theoretical investigations., Comment: 5 pages, 3 figures

Published
2024
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3. 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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4. 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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5. 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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