New region of deformation in the neutron-rich 2460Cr36 and 2462Cr38

被引：126

作者：

Sorlin, O

Donzaud, C

Nowacki, F

Angélique, JC

Azaiez, F

Bourgeois, C

Chiste, V

Dlouhy, Z

Grévy, S

Guillemaud-Mueller, D

Ibrahim, F

Kratz, KL

Lewitowicz, M

Lukyanov, SM

Mrasek, J

Penionzhkevich, YE

Santos, FD

Pfeiffer, B

Pougheon, F

Poves, A

Saint-Laurent, MG

Stanoiu, M

机构：

[1] Inst Phys Nucl, IN2P3, CNRS, F-91406 Orsay, France

[2] Univ Strasbourg, IRES, IN2P3, CNRS, F-67037 Strasbourg, France

[3] Inst Sci Mat & Rayonnement, LPC, F-14050 Caen, France

[4] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[5] Johannes Gutenberg Univ Mainz, Inst Kernchem, D-55128 Mainz, Germany

[6] GANIL, F-14076 Caen, France

[7] Joint Inst Nucl Res Dubna, FLNR, Dubna 141980, Moscow Region, Russia

[8] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain

来源：

EUROPEAN PHYSICAL JOURNAL A | 2003年 / 16卷 / 01期

关键词：

D O I：

10.1140/epja/i2002-10069-9

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The neutron-rich nuclei V-60-63(23) have been produced at GANIL via interactions of a 61.8 A . MeV Ge-76 beam with a Ni-58 target. Beta-decay to Cr-60-63(24) has been investigated using combined beta- and gamma-ray spectroscopy. Half-lives of the V60-63 nuclei have been determined, and the existence of a beta-decay isomer in the 6 V nucleus is strongly supported. The observation of low-energy 2(+) states in Cr-60 (646 keV) and Cr-62 (446 keV) suggests that these isotopes are strongly deformed with beta(2) similar to 0.3. This is confirmed by shell model calculations which show the dominant influence of the intruder g and d orbitals to obtain low 2(+) energies in the neutron-rich Cr isotopes.

引用

页码：55 / 61

页数：7

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