DECAY OF AL-24 AND AL-24(META) TO GAMMA-RAY AND ALPHA-PARTICLE EMITTING STATES IN MG-24

被引:40
作者
HONKANEN, J [1 ]
KORTELAHTI, M [1 ]
AYSTO, J [1 ]
ESKOLA, K [1 ]
HAUTOJARVI, A [1 ]
机构
[1] UNIV HELSINKI,DEPT PHYS,SF-00170 HELSINKI 17,FINLAND
来源
PHYSICA SCRIPTA | 1979年 / 19卷 / 03期
关键词
D O I
10.1088/0031-8949/19/3/004
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The level structure of 24Mg and decay properties of 129 ms 24Alm and 2.07 s 24Al have been investigated by means of γ-ray and particle spectroscopy. The energy and intensity of the isomeric transition were measured to be 425.8 ± 0.1 keV and (82.5 ± 3.0)%, respectively. The isomer was observed to decay via a super-allowed transition with a log ft value of 3.51 ± 0.04 to its 1+, 9965.2 ± 1.5 keV analog state in 24Mg. In addition, decay to seven particle-emitting levels and four levels depopulated by γ-ray emission were observed. In the decay of 2.07 s 24Al a new delayed α-particle group with an energy 3.04 MeV and three new γ-transitions were observed. More accurate values than those reported in earlier studies are given for γ-ray energies and intensities, and also for deduced excitation energies in 24Mg. Particle branches (per disintegration) were measured for the observed delayed particle groups. © 1979 IOP Publishing Ltd.
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页码:239 / 244
页数:6
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