Determining reaction cross sections via characteristic X-ray detection:α-induced reactions on 169Tm for the astrophysical γ-process

G. G. Kiss, T. Rauscher, T. Szücs, Zs Kertész, Zs Fülöp, Gy Gyürky, C. Fröhlich, J. Farkas, Z. Elekes, E. Somorjai

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Abstract

The cross sections of the Tm169(α,γ)Lu173 and Tm169(α,n)Lu172 reactions have been measured first time using a new method, by detecting the characteristic X-ray radiation following the electron capture-decay of 172,173Lu. Despite the relatively long half-life of the reaction products (T1/2=500 and 6.7 days, respectively) it was possible to measure the cross section of the Tm169(α,γ)Lu173 reaction close to the Gamow window (T9=3.5 GK), between Ec.m.=13.16 and 17.08 MeV. The Tm169(α,n)Lu172 reaction cross section was measured from Ec.m.=11.21 MeV up to Ec.m.=17.08 MeV. The experimental results have been compared to theoretical predictions.

Original languageEnglish
Pages (from-to)419-423
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume695
Issue number5
DOIs
Publication statusPublished - Jan 17 2011

Keywords

  • Astrophysical γ-process
  • Characteristic X-ray emission
  • Nuclear astrophysics
  • Nucleosynthesis
  • Statistical model

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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