University of Hertfordshire

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

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  • G. G. Kiss
  • T. Szücs
  • T. Rauscher
  • Z. Török
  • Z. Fülöp
  • G. Gyürky
  • Z. Halász
  • E. Somorjai
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Original languageEnglish
Pages (from-to)40-44
Number of pages5
JournalPhysics Letters B
Publication statusPublished - 30 Jul 2014


The cross sections of the Er162(α,γ)Yb166 and Er162(α,n)Yb165 reactions have been measured for the first time. The radiative alpha capture reaction cross section was measured from Ec.m.=16.09MeV down to Ec.m.=11.21MeV, close to the astrophysically relevant region (which lies between 7.8 and 11.48 MeV at 3 GK stellar temperature). The Er162(α,n)Yb165 reaction was studied above the reaction threshold between Ec.m.=12.19 and 16.09MeV. The fact that the Er162(α,γ)Yb166 cross sections were measured below the (α,n) threshold at first time in this mass region opens the opportunity to study directly the α-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. © 2014 Elsevier B.V.


Funding Details: NSF, National Science Foundation. ©2014 Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3

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