ALPHA-DECAY OF THE NEW ISOTOPES AC-207, AC-208

被引：42

作者：

LEINO, M ^{[1
]}

UUSITALO, J ^{[1
]}

ENQVIST, T ^{[1
]}

ESKOLA, K ^{[1
]}

JOKINEN, A ^{[1
]}

LOBERG, K ^{[1
]}

TRZASKA, WH ^{[1
]}

AYSTO, J ^{[1
]}

机构：

[1] UNIV HELSINKI,DEPT PHYS,SF-00170 HELSINKI 17,FINLAND

来源：

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1994年 / 348卷 / 02期

关键词：

23.60.+e; -25.70.-z; -27.80.+w;

D O I：

10.1007/BF01289604

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：

Two new neutron-deficient isotopes Ac-207, Ac-208 have been produced in fusion reactions with 5.2 - 5.6 MeV/nucleon Ar-40 ions on Lu-175 and identified on the basis of genetic correlations. The fusion evaporation products were separated on-line using a gas-filled magnetic recoil separator. The alpha energy and half-life of Ac-208 were determined to be (7572 +/- 15) keV and (95(+24/-16)) ms, respectively. A new alpha line with a half-life of (25(+9/-5)) ms and an energy of (7758 +/- 20) keV is assigned to the decay of an isomeric state in Ac-208. Another new activity with a half-life of (22(+40/-9)) ms and an alpha energy of (7712 +/- 25) keV is assigned to Ac-207.

引用

页码：151 / 152

页数：2

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