Alpha induced reaction cross section measurements on 162Er for the astrophysical gamma process

G. G. Kiss; T. Szücs; T. Rauscher; Zs. Török; Zs. Fülöp; Gy. Gyürky; Z. Halász; E. Somorjai

doi:10.1016/j.physletb.2014.06.011

Alpha induced reaction cross section measurements on 162Er for the astrophysical gamma process

Nuclear Experiment 2014-06-20 v1

Authors: G. G. Kiss , T. Szücs , T. Rauscher , Zs. Török , Zs. Fülöp , Gy. Gyürky , Z. Halász , E. Somorjai

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Abstract

The cross sections of the 162Er(a,g,)166Yb and 162Er(a,n)165Yb reactions have been measured for the first time. The radiative alpha capture reaction cross section was measured from Ec.m. = 16.09 down to Ec.m. = 11.21 MeV, close to the astrophysically relevant region (which lies between 7.8 and 11.48 MeV at 3 GK stellar temperature). The 162Er(a,n)165Yb reaction was studied above the reaction threshold between Ec.m. = 12.19 and 16.09 MeV. The fact that the 162Er(a,g)166Yb cross sections were measured below the (a,n) threshold at first time in this mass region opens the opportunity to study directly the a-widths required for the determination of astrophysical reaction rates. The data clearly show that compound nucleus formation in this reaction proceeds differently than previously predicted.

Keywords

alpha induced reaction cross section measurement astrophysical gamma process Erbium-162 compound nucleus formation

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@article{arxiv.1406.4989,
  title  = {Alpha induced reaction cross section measurements on 162Er for the astrophysical gamma process},
  author = {G. G. Kiss and T. Szücs and T. Rauscher and Zs. Török and Zs. Fülöp and Gy. Gyürky and Z. Halász and E. Somorjai},
  journal= {arXiv preprint arXiv:1406.4989},
  year   = {2014}
}

Alpha induced reaction cross section measurements on 162Er for the astrophysical gamma process

Abstract

Keywords

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