BROWSE

Related Scientist

risp's photo.

risp
중이온가속기구축사업단
more info

ITEM VIEW & DOWNLOAD

First observation of 28O

Cited 0 time in webofscience Cited 0 time in scopus
47 Viewed 0 Downloaded
Title
First observation of 28O
Author(s)
Kondo, Y.; Achouri, N.L.; Falou, H. Al; Atar, L.; Aumann, T.; Baba, H.; Boretzky, K.; Caesar, C.; Calvet, D.; Chae, H.; Chiga, N.; Corsi, A.; Delaunay, F.; Delbart, A.; Deshayes, Q.; Dombrádi, Zs.; Douma, C.A.; Ekstrom, A.; Elekes, Z.; Forssen, C.; Gasparic, I.; Gheller, J.-M.; Gibelin, J.; Gillibert, A.; Hagen, G.; Harakeh, M.N.; Hirayama, A.; Hoffman, C.R.; Holl, M.; Horvat, A.; Horvath, A.; J.W. Hwang; Isobe, T.; Jiang, W.G.; Kahlbow, J.; Kalantar-Nayestanaki, N.; Kawase, S.; S. Kim; Kisamori, K.; Kobayashi, T.; Korper, D.; Koyama, S.; Kuti, I.; Lapoux, V.; Lindberg, S.; Marques, F.M.; Masuoka, S.; Mayer, J.; Miki, K.; Murakami, T.; Najafi, M.; Nakamura, T.; Nakano, K.; Nakatsuka, N.; Nilsson, T.; Obertelli, A.; Ogata, K.; de, Oliveira Santos F.; Orr, N.A.; Otsu, H.; Otsuka, T.; Ozaki, T.; Panin, V.; Papenbrock, T.; Paschalis, S.; Revel, A.; Rossi, D.; Saito, A.T.; Saito, T.Y.; Sasano, M.; Sato, H.; Satou, Y.; Scheit, H.; Schindler, F.; Schrock, P.; Shikata, M.; Shimizu, N.; Shimizu, Y.; Simon, H.; Sohler, D.; Sorlin, O.; L. Stuhl; Sun, Z.H.; Takeuchi, S.; Tanaka, M.; Thoennessen, M.; Tornqvist, H.; Togano, Y.; Tomai, T.; Tscheuschner, J.; Tsubota, J.; Tsunoda, N.; Uesaka, T.; Utsuno, Y.; Vernon, I.; Wang, H.; Yang, Z.; Yasuda, M.; Yoneda, K.; Yoshida, S.
Publication Date
2023-08
Journal
Nature, v.620, no.7976, pp.965 - 970
Publisher
Nature Research
Abstract
Subjecting a physical system to extreme conditions is one of the means often used to obtain a better understanding and deeper insight into its organization and structure. In the case of the atomic nucleus, one such approach is to investigate isotopes that have very different neutron-to-proton (N/Z) ratios than in stable nuclei. Light, neutron-rich isotopes exhibit the most asymmetric N/Z ratios and those lying beyond the limits of binding, which undergo spontaneous neutron emission and exist only as very short-lived resonances (about 10−21s), provide the most stringent tests of modern nuclear-structure theories. Here we report on the first observation of 28O and 27O through their decay into 24O and four and three neutrons, respectively. The 28O nucleus is of particular interest as, with the Z = 8 and N = 20 magic numbers1,2, it is expected in the standard shell-model picture of nuclear structure to be one of a relatively small number of so-called ‘doubly magic’ nuclei. Both 27O and 28O were found to exist as narrow, low-lying resonances and their decay energies are compared here to the results of sophisticated theoretical modelling, including a large-scale shell-model calculation and a newly developed statistical approach. In both cases, the underlying nuclear interactions were derived from effective field theories of quantum chromodynamics. Finally, it is shown that the cross-section for the production of 28O from a 29F beam is consistent with it not exhibiting a closed N = 20 shell structure. © 2023, The Author(s), under exclusive licence to Springer Nature Limited.
URI
https://pr.ibs.re.kr/handle/8788114/14556
DOI
10.1038/s41586-023-06352-6
ISSN
0028-0836
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse