Nuclear excitation by electronic transition in 189Os -: art. no. 051304

被引：45

作者：

Ahmad, I ^{[1
]}

Dunford, RW ^{[1
]}

Esbensen, H ^{[1
]}

Gemmell, DS ^{[1
]}

Kanter, EP ^{[1
]}

Rütt, U ^{[1
]}

Southworth, SH ^{[1
]}

机构：

[1] Argonne Natl Lab, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW C | 2000年 / 61卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.61.051304

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：

Monochromatic x rays have been used to explore the phenomenon of nuclear excitation by electronic transition (NEET) in the Os-189 atomic/nuclear system. A new theoretical approach to calculating this process has also been developed and predicts a value for the "NEET probability," P-NEET, of 1 3x10(-10). P-NEET is the probability that a given atomic excitation (in this case a K vacancy), will result in the excitation of a specific nuclear state (in this case the 69.5-keV level in Os-189). This value is much lower than most of the calculated values given in the literature for this system. Our measurement gives the result P-NEET <9x10(-10), an upper limit which is several orders of magnitude lower than the values found in previous measurements, but which is consistent with the new calculation.

引用

页数：5

共 22 条

[1] MEASUREMENTS OF NUCLEAR GAMMA RAYS IN MUONIC ATOMS OF SEVERAL DEFORMED NUCLEI [J].