Experimental identification of spin-parities and single-particle configurations in 257No and its α-decay daughter 253Fm -: art. no. 102502

被引：65

作者：

Asai, M ^{[1
]}

Tsukada, K

Sakama, M

Ichikawa, S

Ishii, T

Nagame, Y

Nishinaka, I

Akiyama, K

Osa, A

Oura, Y

Sueki, K

Shibata, M

机构：

[1] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Ibaraki 3191195, Japan

[2] Univ Tokushima, Dept Radiol Sci & Engn, Tokushima 7708509, Japan

[3] Japan Atom Energy Res Inst, Dept Mat Sci, Ibaraki 3191195, Japan

[4] Tokyo Metropolitan Univ, Dept Chem, Tokyo 1920397, Japan

[5] Univ Tsukuba, Dept Chem, Tsukuba, Ibaraki 3058571, Japan

[6] Nagoya Univ, Radioisotope Res Ctr, Nagoya, Aichi 4648602, Japan

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.95.102502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

alpha-gamma and alpha-electron coincidence spectroscopy for a short-lived heavy actinide nucleus No-257 (T-1/2=24.5 s) has been performed using a gas-jet transport system and an on-line isotope separator. Spin-parities of excited states in Fm-253 fed by the alpha decay of No-257 have been identified on the basis of the measured internal conversion coefficients. The nu 3/2(+)[622] configuration has been assigned to the ground state of No-257 as well as to the 124.1 keV level in Fm-253. It was found that the ground-state configuration of No-257 is different from that of lighter N=155 isotones.

引用

页数：4

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