DECAY OF PR-148 ISOMERS TO LEVELS OF ND-148

被引：19

作者：

IKEDA, Y ^{[1
]}

YAMAMOTO, H ^{[1
]}

KAWADE, K ^{[1
]}

TAKEUCHI, T ^{[1
]}

KATOH, T ^{[1
]}

NAGAHARA, T ^{[1
]}

机构：

[1] RIKKYO UNIV,INST ATOM ENERGY,YOKOSUKA,KANAGAWA 24001,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1979年 / 47卷 / 04期

关键词：

!sup]148[!/sup]Nd deduced levels; Q; log ft; J; π; B(Λ); Ge(Li) detectors; measured E[!sub]γ[!/sub; I[!sub]γ[!/sub; E[!sub]β[!/sub; T[!sub]1/2[!/sub; γγ-coin; γγ-anisotropy; RADIOACTIVITY[!sup]148[!/sup]Pr [from [!sup]235[!/sup]U fission;

D O I：

10.1143/JPSJ.47.1039

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The decay of 148Pr to levels on 148Nd has been investigated with Ge(Li) and plastic detectors in singles and coincidence modes. Sources were prepared by a chemical separation from the fission products of 235U. Forty y-rays associated with 148Pr decay have been observed and thirty four of them are incorporated into a level scheme including six new levels at 723.7, 1275.0, 1512.4, 1687.5, 2543.0 and 3129.6 keV. In comparison with the decay study of 148Pr produced by the 148Nd(n, p) reaction, this work, for the first time, could make clear the existence of 148Pr isomers by y-ray intensity ratios and their half-lives which are 2.27±0.04 and 2.0±0.1 min. A low lying level at 723.7 keV is assigned as a 0+ state from the y-y anisotropy measurements and low lying levels in the transitional nuclide 148Nd are discussed in terms of the quasi band description. © 1979, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

引用

页码：1039 / 1046

页数：8

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