Spectroscopy of low-lying states in odd-odd 146Eu

被引：7

作者：

Bhattacharjee, T. ^{[1
]}

Banerjee, D. ^{[2
]}

Das, S. K. ^{[2
]}

Chanda, S. ^{[3
]}

Malik, T. ^{[4
]}

Chowdhury, A. ^{[1
]}

Das, P. ^{[1
]}

Bhattacharyya, S. ^{[1
]}

Guin, R. ^{[2
]}

机构：

[1] Ctr Variable Energy Cyclotron, Kolkata 700064, India

[2] Ctr Variable Energy Cyclotron, Radiochem Div BARC, Kolkata 700064, India

[3] Fakir Chand Coll, Diamond Harbour, W Bengal, India

[4] Indian Sch Mines, Dept Appl Phys, Dhanbad 826004, Bihar, India

来源：

PHYSICAL REVIEW C | 2013年 / 88卷 / 01期

关键词：

YRAST STATES; HIGH-SPIN; NUCLEI; CLOSURE; ISOMER; GD-146; PHONON; MODEL;

D O I：

10.1103/PhysRevC.88.014313

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：

Electron capture (EC) decay of Gd-146 (t(1/2) = 48 d) to the low lying states of Eu-146 has been studied using high-resolution B gamma-ray spectroscopy. The 146Gd activity was produced by (alpha, 2n) reaction at E-alpha = 32 MeV using a 93.8% enriched Sm-144 target. The level structure has been considerably modified from the measurement of gamma-ray singles, gamma gamma coincidences and decay half lives. Life time measurement has been performed for the 3(-) (114.06 keV) and 2(-) (229.4 keV) levels of Eu-146 using the mirror symmetric centroid difference (MSCD) method with LaBr3 (Ce) detectors. The lifetimes for these two states have been found to be 5.38 +/- 2.36 ps and 8.38 +/- 2.19 ps respectively. Shell model calculation has been performed using OXBASH code in order to interpret the results.

引用

页数：9

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