Qβ measurements of 158,159Pm, 159,161Sm, 160-165Eu, 163Gd and 166Tb using a total absorption BGO detector

被引：17

作者：

Hayashi, H. ^{[1
]}

Akita, Y. ^{[1
]}

Suematsu, O. ^{[1
]}

Shibata, M. ^{[2
]}

Asai, M. ^{[3
]}

Sato, T. K. ^{[3
]}

Ichikawa, S. ^{[3
]}

Nishinaka, I. ^{[3
]}

Nagame, Y. ^{[3
]}

Osa, A. ^{[3
]}

Tsukada, K. ^{[3
]}

Ishii, T. ^{[3
]}

Kojima, Y. ^{[4
]}

Taniguchi, A. ^{[5
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Nagoya, Aichi 4648603, Japan

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

[3] Japan Atom Energy Agcy, Ibaraki 3191195, Japan

[4] Hiroshima Univ, Grad Sch Engn, Higashihiroshima 7398527, Japan

[5] Kyoto Univ, Inst Res Reactor, Osaka 5900494, Japan

来源：

EUROPEAN PHYSICAL JOURNAL A | 2007年 / 34卷 / 04期

关键词：

D O I：

10.1140/epja/i2006-10522-9

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：

Q(beta) values of the neutron-rich isotopes of Eu160-165 and Gd-163 were measured for the first time using a total absorption bismuth germanate (BGO) detector, and previously obtained data on Pm-158,Pm-159, Sm-159,Sm-161 and Tb-166 were re-analyzed. These radioactive sources were prepared by an on-line mass separator (Tokai-ISOL) following the U-238(p,f) reaction. The deduced Q(beta) values are the following: 6085(80) keV for Pm-158, 3805(65) keV for Sm-159, 5460(140) keV for Pm-159, 4705(60)keV for Eu-160, 5065(130)keV for Sm-161, 3705(60) keV for Eu-161, 5575(60) keV for Eu-162, 4690(70) keV for Eu-163, 3170(70) keV for Gd-163, 6430(70) keV for Eu-164, 5800(120) keV for Eu-165, and 4695(70) keV for Tb-166. Moreover, the deduced mass excesses and two-neutron separation energies (S-2n values) were compared with those of the atomic mass evaluations and theoretical predictions.

引用

页码：363 / 370

页数：8

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