Image de couverture de livre

Magicity versus superfluidity around $^{28}$O viewed from the study of $^{30}$F

Fuente: arXiv

Enregistré dans:

Détails bibliographiques
Auteurs principaux:	Kahlbow, J., Aumann, T., Sorlin, O., Kondo, Y., Nakamura, T., Nowacki, F., Revel, A., Achouri, N. L., Falou, H. Al, Atar, L., Baba, H., Boretzky, K., Caesar, C., Calvet, D., Chae, H., Chiga, N., Corsi, A., Delaunay, F., Delbart, A., Deshayes, Q., Dombradi, Z., Douma, C. A., Elekes, Z., Gasparic, I., Gheller, J. -M., Gibelin, J., Gillibert, A., Harakeh, M. N., Hirayama, A., Holl, M., Horvat, A., Horvath, A., Hwang, J. W., Isobe, T., Kalantar-Nayestanaki, N., Kawase, S., Kim, S., Kisamori, K., Kobayashi, T., Körper, D., Koyama, S., Kuti, I., Lapoux, V., Lindberg, S., Marques, F. M., Masuoka, S., Mayer, J., Miki, K., Murakami, T., Najafi, M., Nakano, K., Nakatsuka, N., Nilsson, T., Obertelli, A., Orr, N. A., Otsu, H., Ozaki, T., Panin, V., Paschalis, S., Rossi, D. M., Saito, A. T., Saito, T., Sasano, M., Sato, H., Satou, Y., Scheit, H., Schindler, F., Schrock, P., Shikata, M., Shimada, K., Shimizu, Y., Simon, H., Sohler, D., Stuhl, L., Takeuchi, S., Tanaka, M., Thoennessen, M., Törnqvist, H., Togano, Y., Tomai, T., Tscheuschner, J., Tsubota, J., Uesaka, T., Wang, H., Yang, Z., Yasuda, M., Yoneda, K.
Format:	Preprint
Publié:	2024
Sujets:	Nuclear Experiment Nuclear Theory
Accès en ligne:	Acceder al recurso
Tags:	Ajouter un tag Pas de tags, Soyez le premier à ajouter un tag!

_version_	1866909294467743744
author	Kahlbow, J. Aumann, T. Sorlin, O. Kondo, Y. Nakamura, T. Nowacki, F. Revel, A. Achouri, N. L. Falou, H. Al Atar, L. Baba, H. Boretzky, K. Caesar, C. Calvet, D. Chae, H. Chiga, N. Corsi, A. Delaunay, F. Delbart, A. Deshayes, Q. Dombradi, Z. Douma, C. A. Elekes, Z. Gasparic, I. Gheller, J. -M. Gibelin, J. Gillibert, A. Harakeh, M. N. Hirayama, A. Holl, M. Horvat, A. Horvath, A. Hwang, J. W. Isobe, T. Kalantar-Nayestanaki, N. Kawase, S. Kim, S. Kisamori, K. Kobayashi, T. Körper, D. Koyama, S. Kuti, I. Lapoux, V. Lindberg, S. Marques, F. M. Masuoka, S. Mayer, J. Miki, K. Murakami, T. Najafi, M. Nakano, K. Nakatsuka, N. Nilsson, T. Obertelli, A. Orr, N. A. Otsu, H. Ozaki, T. Panin, V. Paschalis, S. Rossi, D. M. Saito, A. T. Saito, T. Sasano, M. Sato, H. Satou, Y. Scheit, H. Schindler, F. Schrock, P. Shikata, M. Shimada, K. Shimizu, Y. Simon, H. Sohler, D. Stuhl, L. Takeuchi, S. Tanaka, M. Thoennessen, M. Törnqvist, H. Togano, Y. Tomai, T. Tscheuschner, J. Tsubota, J. Uesaka, T. Wang, H. Yang, Z. Yasuda, M. Yoneda, K.
author_facet	Kahlbow, J. Aumann, T. Sorlin, O. Kondo, Y. Nakamura, T. Nowacki, F. Revel, A. Achouri, N. L. Falou, H. Al Atar, L. Baba, H. Boretzky, K. Caesar, C. Calvet, D. Chae, H. Chiga, N. Corsi, A. Delaunay, F. Delbart, A. Deshayes, Q. Dombradi, Z. Douma, C. A. Elekes, Z. Gasparic, I. Gheller, J. -M. Gibelin, J. Gillibert, A. Harakeh, M. N. Hirayama, A. Holl, M. Horvat, A. Horvath, A. Hwang, J. W. Isobe, T. Kalantar-Nayestanaki, N. Kawase, S. Kim, S. Kisamori, K. Kobayashi, T. Körper, D. Koyama, S. Kuti, I. Lapoux, V. Lindberg, S. Marques, F. M. Masuoka, S. Mayer, J. Miki, K. Murakami, T. Najafi, M. Nakano, K. Nakatsuka, N. Nilsson, T. Obertelli, A. Orr, N. A. Otsu, H. Ozaki, T. Panin, V. Paschalis, S. Rossi, D. M. Saito, A. T. Saito, T. Sasano, M. Sato, H. Satou, Y. Scheit, H. Schindler, F. Schrock, P. Shikata, M. Shimada, K. Shimizu, Y. Simon, H. Sohler, D. Stuhl, L. Takeuchi, S. Tanaka, M. Thoennessen, M. Törnqvist, H. Togano, Y. Tomai, T. Tscheuschner, J. Tsubota, J. Uesaka, T. Wang, H. Yang, Z. Yasuda, M. Yoneda, K.
contents	The neutron-rich unbound fluorine isotope $^{30}$F$_{21}$ has been observed for the first time by measuring its neutron decay at the SAMURAI spectrometer (RIBF, RIKEN) in the quasi-free proton knockout reaction of $^{31}$Ne nuclei at 235 MeV/nucleon. The mass and thus one-neutron-separation energy of $^{30}$F has been determined to be $S_n = -472\pm 58 \mathrm{(stat.)} \pm 33 \mathrm{(sys.)}$ keV from the measurement of its invariant-mass spectrum. The absence of a sharp drop in $S_n$($^{30}$F) shows that the ``magic'' $N=20$ shell gap is not restored close to $^{28}$O, which is in agreement with our shell-model calculations that predict a near degeneracy between the neutron $d$ and $fp$ orbitals, with the $1p_{3/2}$ and $1p_{1/2}$ orbitals becoming more bound than the $0f_{7/2}$ one. This degeneracy and reordering of orbitals has two potential consequences: $^{28}$O behaves like a strongly superfluid nucleus with neutron pairs scattering across shells, and both $^{29,31}$F appear to be good two-neutron halo-nucleus candidates.
format	Preprint
id	arxiv_https___arxiv_org_abs_2407_19303
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Magicity versus superfluidity around $^{28}$O viewed from the study of $^{30}$F Kahlbow, J. Aumann, T. Sorlin, O. Kondo, Y. Nakamura, T. Nowacki, F. Revel, A. Achouri, N. L. Falou, H. Al Atar, L. Baba, H. Boretzky, K. Caesar, C. Calvet, D. Chae, H. Chiga, N. Corsi, A. Delaunay, F. Delbart, A. Deshayes, Q. Dombradi, Z. Douma, C. A. Elekes, Z. Gasparic, I. Gheller, J. -M. Gibelin, J. Gillibert, A. Harakeh, M. N. Hirayama, A. Holl, M. Horvat, A. Horvath, A. Hwang, J. W. Isobe, T. Kalantar-Nayestanaki, N. Kawase, S. Kim, S. Kisamori, K. Kobayashi, T. Körper, D. Koyama, S. Kuti, I. Lapoux, V. Lindberg, S. Marques, F. M. Masuoka, S. Mayer, J. Miki, K. Murakami, T. Najafi, M. Nakano, K. Nakatsuka, N. Nilsson, T. Obertelli, A. Orr, N. A. Otsu, H. Ozaki, T. Panin, V. Paschalis, S. Rossi, D. M. Saito, A. T. Saito, T. Sasano, M. Sato, H. Satou, Y. Scheit, H. Schindler, F. Schrock, P. Shikata, M. Shimada, K. Shimizu, Y. Simon, H. Sohler, D. Stuhl, L. Takeuchi, S. Tanaka, M. Thoennessen, M. Törnqvist, H. Togano, Y. Tomai, T. Tscheuschner, J. Tsubota, J. Uesaka, T. Wang, H. Yang, Z. Yasuda, M. Yoneda, K. Nuclear Experiment Nuclear Theory The neutron-rich unbound fluorine isotope $^{30}$F$_{21}$ has been observed for the first time by measuring its neutron decay at the SAMURAI spectrometer (RIBF, RIKEN) in the quasi-free proton knockout reaction of $^{31}$Ne nuclei at 235 MeV/nucleon. The mass and thus one-neutron-separation energy of $^{30}$F has been determined to be $S_n = -472\pm 58 \mathrm{(stat.)} \pm 33 \mathrm{(sys.)}$ keV from the measurement of its invariant-mass spectrum. The absence of a sharp drop in $S_n$($^{30}$F) shows that the ``magic'' $N=20$ shell gap is not restored close to $^{28}$O, which is in agreement with our shell-model calculations that predict a near degeneracy between the neutron $d$ and $fp$ orbitals, with the $1p_{3/2}$ and $1p_{1/2}$ orbitals becoming more bound than the $0f_{7/2}$ one. This degeneracy and reordering of orbitals has two potential consequences: $^{28}$O behaves like a strongly superfluid nucleus with neutron pairs scattering across shells, and both $^{29,31}$F appear to be good two-neutron halo-nucleus candidates.
title	Magicity versus superfluidity around $^{28}$O viewed from the study of $^{30}$F
topic	Nuclear Experiment Nuclear Theory
url	https://arxiv.org/abs/2407.19303