The predicted 10.6 keV transition in 221Fr from the α-decay of 225Ac revealed

被引：2
|
作者：
Yakushev, EA [1 ]
Chumin, VG [1 ]
Gorozhankin, VM [1 ]
Gromov, KY [1 ]
Kovalík, A [1 ]
Filosofov, DV [1 ]
Norseev, YV [1 ]
Yurkova, LV [1 ]
机构：
[1] Joint Inst Nucl Res, Lab Nucl Problems, Dubna 141980, Moscow Region, Russia
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2002年 / 28卷 / 03期
关键词：
D O I：
10.1088/0954-3899/28/3/308
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 low energy electron spectrum from the alpha-decay of Ac-225 has been measured with 20 eV instrumental resolution using an electrostatic spectrometer and radioactive sources prepared by vacuum evaporation. The predicted 10.642(5) keV M1 + < 0.05% E2 nuclear transition in Fr-221 have been revealed. Energies of 26.015(5), 36.660(5), 38.543(3) and 108.37(l) keV nuclear transitions in Fr-221 have been essentially improved. Relative intensities of the measured conversion electron lines of these transitions have also been determined.
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页码：463 / 467
页数：5
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