Investigating the strength of the N=34 subshell closure in 54Ca

被引：8

作者：

Steppenbeck, D. ^{[1
]}

Takeuchi, S.

Aoi, N.

Doornenbal, P.

Lee, J.

Matsushita, M. ^{[1
]}

Wang, H.

Baba, H.

Fukuda, N.

Go, S.

Honma, M.

Matsui, K.

Michimasa, S. ^{[1
]}

Motobayashi, T.

Nishimura, D.

Otsuka, T.

Sakurai, H.

Shiga, Y.

Soederstroem, P-A

Sumikama, T.

Suzuki, H.

Taniuchi, R.

Utsuno, Y.

Valiente-Dobon, J. J.

Yoneda, K.

机构：

[1] Univ Tokyo, Ctr Nucl Study, Wako, Saitama 3510198, Japan

来源：

INTERNATIONAL SYMPOSIUM ON EXOTIC NUCLEAR STRUCTURE FROM NUCLEONS (ENSFN 2012) | 2013年 / 445卷

关键词：

SHELL-MODEL; NEUTRON; NUCLEI; RIKEN;

D O I：

10.1088/1742-6596/445/1/012012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Excited states in the exotic N = 34 isotope Ca-54 have been measured for the first time via in-beam gamma-ray spectroscopy with proton-knockout reactions from Sc-55 and Ti-56 radioactive beams on a Be reaction target at the Radioactive Isotope Beam Factory, Japan. A strong candidate for the transition from the first 2(+) state to the 0(+) ground state has been identified, in addition to several other weaker transitions. The structure of the N = 33 isotope Ca-53 has also been investigated from the same data. Preliminary gamma-ray energy spectra for Ca-54 and Ca-53 will be presented and the significance of the N = 34 subshell closure will be examined. Predictions of several shell-model interactions performed in the fp model space will be discussed in light of the new results.

引用

页数：4

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