Proton capture reaction cross section measurements on as a probe of statistical model calculations
- Kocaeli Univ. (Turkey). Dept. of Physics; Univ. of Notre Dame, IN (United States). Dept. of Physics
- Kocaeli Univ. (Turkey). Dept. of Physics
- Univ. of Notre Dame, IN (United States). Dept. of Physics
- Univ. of Notre Dame, IN (United States). Dept. of Physics; Goethe Univ., Frankfurt (Germany). Inst. of Applied Physics
- MTA Atomki, Debrecen (Hungary)
- Argonne National Lab. (ANL), Argonne, IL (United States)
It is crucial to measure reaction cross sections relevant to the astrophysical γ process so that theoretical reaction rates can be tested and validated with experimental data. Here, the total cross sections for the 162Er(p,γ) 163Tm and the 162Er(p,n) 162Tm reactions have been measured by the activation method in center-of-mass energies from 3.973 to 8.944 MeV and from 5.962 to 8.944 MeV, respectively. The nucleus 162Er is the heaviest p nuclide to be measured by the activation method using γ -ray spectroscopy, so far. It is important to note that the energy range for the (p,γ) reaction measurement covers a large fraction of the astrophysically relevant energy region between 2.71 and 5.34 MeV. The targets were prepared by evaporating 28.2 % isotopically enriched 162Er2 O3 powder onto carbon backing foils, and bombarded with proton beams provided by the FN Tandem Accelerator at the University of Notre Dame. The reaction yields have been determined by the observed activity of produced radioactive isotopes, which was detected offline by a high-purity germanium detector. The results are presented and compared with calculations from two statistical model codes: NON-SMOKER and TALYS.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Scientific and Technological Research Council of Turkey (TUBITAK); National Science Foundation (NSF); Michigan State Univ., East Lansing, MI (United States). Joint Inst. for Nuclear Astrophysics-Center for the Evolution of the Elements (JINA-CEE); German Research Foundation (DFG); Hungarian Scientific Research Fund (OTKA); Helmholtz International Center for FAIR (HIC for FAIR), Frankfurt (Germany)
- Grant/Contract Number:
- AC02-06CH11357; 108T508; 109T585; 2007/36; 0434844; PHY02-16783; K108459; K120666; SO907/2-1
- OSTI ID:
- 1462746
- Journal Information:
- Physical Review C, Vol. 96, Issue 4; ISSN 2469-9985
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
The activation method for cross section measurements in nuclear astrophysics
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journal | March 2019 |
The activation method for cross section measurements in nuclear astrophysics | text | January 2019 |
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