Year: 2009
Type: article
Abstract: We report on the first spectroscopic study of the $N=22$ nucleus $^{32}\mathrm{Ne}$ at the newly completed RIKEN Radioactive Ion Beam Factory. A single $\ensuremath{\gamma}$-ray line with an energy of 722(9) keV was observed in both inelastic scattering of a $226\text{ }\text{ }\mathrm{MeV}/u$ $^{32}\mathrm{Ne}$ beam on a carbon target and proton removal from $^{33}\mathrm{Na}$ at $245\text{ }\text{ }\mathrm{MeV}/u$. This transition is assigned to the deexcitation of the first ${J}^{\ensuremath{\pi}}={2}^{+}$ state in $^{32}\mathrm{Ne}$ to the ${0}^{+}$ ground state. Interpreted through comparison with state-of-the-art shell-model calculations, the low excitation energy demonstrates that the ``island of inversion'' extends to at least $N=22$ for the Ne isotopes.
Source: Physical Review Letters
Authors: P. Doornenbal, H. Scheit, N. Aoi, S. Takeuchi, K. Li, E. Takeshita, H. Wang, H. Baba, S. Deguchi, N. Fukuda, H. Geissel, R. Gernhäuser, J. Gibelin, I. Hachiuma, Y. Hara, C. Hinke, N. Inabe, K. Itahashi, S. Itoh, D. Kameda, S. Kanno, Y. Kawada, N. Kobayashi, Y. Kondo, R. Krücken, T. Kubo, T. Kuboki, K. Kusaka, M. Lantz, S. Michimasa, T. Motobayashi, T. Nakamura, T. Nakao, K. Namihira, S. Nishimura, T. Ohnishi, M. Ohtake, N. A. Orr, H. Otsu, K. Ozeki, Y. Satou, S. Shimoura, T. Sumikama, M. Takechi, H. Takeda, K. N. Tanaka, K. Tanaka, Y. Togano, M. Winkler, Y. Yanagisawa, K. Yoneda, A. Yoshida, K. Yoshida, H. Sakurai
Institutions: RIKEN, RIKEN Nishina Center, Peking University, Tokyo Institute of Technology, GSI Helmholtz Centre for Heavy Ion Research, Technical University of Munich, École Nationale Supérieure d'Ingénieurs de Caen, Saitama University, Rikkyo University, The University of Tokyo, Tokyo University of Science
Language: Latvian
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1983363055