Photoactivation of 180Tam and its implications for the nucleosynthesis of nature's rarest naturally occurring isotope

被引：138

作者：

Belic, D ^{[1
]}

Arlandini, C

Besserer, J

de Boer, J

Carroll, JJ

Enders, J

Hartmann, T

Käppeler, F

Kaiser, H

Kneissl, U

Loewe, M

Maier, HJ

Maser, H

Mohr, P

von Neumann-Cosel, P

Nord, A

Pitz, HH

Richter, A

Schumann, M

Volz, S

Zilges, A

机构：

[1] Univ Stuttgart, Inst Strahlenphys, D-70569 Stuttgart, Germany

[2] Forschungszentrum Karlsruhe, Inst Kernphys, D-76021 Karlsruhe, Germany

[3] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[4] Youngstown State Univ, Dept Phys & Astron, Youngstown, OH 44555 USA

[5] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[6] Wissenschaftskolleg Berlin, D-14193 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.83.5242

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The depopulation of the quasistable isomer in Ta-180 with J(pi) = 9(-) at E-x = 75 keV by resonant photoabsorption was investigated with intense bremsstrahlung. The results indicate a dramatic acceleration of the isomer decay to the short-lived J(pi) = 1(+) ground state under stellar s-process conditions. The consequences for a possible nucleosynthesis of nature's rarest isotope Ta-180. within the s process are discussed.

引用

页码：5242 / 5245

页数：4

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