Proton capture reaction cross section measurements on Er162 as a probe of statistical model calculations

Ozkan, N.; Guray, R. T.; Yalcin, C.; Tan, W. P.; Aprahamian, A.; Beard, M.; deBoer, R. J.; Almaraz-Calderon, S.; Falahat, S.; Gorres, J.; Li, Q.; Sauerwein, A.; Sonnabend, K.; Wiescher, M.; Fulop, Zs.; Gyurky, Gy.; Somorjai, E.; Greene, J.

doi:10.1103/PhysRevC.96.045805

Proton capture reaction cross section measurements on ${}^{162}{Er}$ as a probe of statistical model calculations

Journal Article · Tue Oct 10 00:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.96.045805· OSTI ID:1462746

Ozkan, N. ^[1]; Guray, R. T. ^[1]; Yalcin, C. ^[2]; Tan, W. P. ^[3]; Aprahamian, A. ^[3]; Beard, M. ^[3]; deBoer, R. J. ^[3]; Almaraz-Calderon, S. ^[3]; Falahat, S. ^[3]; Gorres, J. ^[3]; Li, Q. ^[3]; Sauerwein, A. ^[4]; Sonnabend, K. ^[3]; Wiescher, M. ^[3]; Fulop, Zs. ^[5]; Gyurky, Gy. ^[5]; Somorjai, E. ^[5]; Greene, J. ^[6]

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.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: German Research Foundation (DFG); Helmholtz International Center for FAIR (HIC for FAIR), Frankfurt (Germany); Hungarian Scientific Research Fund (OTKA); Michigan State Univ., East Lansing, MI (United States). Joint Inst. for Nuclear Astrophysics-Center for the Evolution of the Elements (JINA-CEE); National Science Foundation (NSF); Scientific and Technological Research Council of Turkey (TUBITAK)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1462746

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 4 Vol. 96; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (2)

The activation method for cross section measurements in nuclear astrophysics Gyürky, Gy.; Fülöp, Zs.; Käppeler, F. The European Physical Journal A, Vol. 55, Issue 3 https://doi.org/10.1140/epja/i2019-12708-4	journal	March 2019
The activation method for cross section measurements in nuclear astrophysics Gyürky, Gy.; Fülöp, Zs.; Käppeler, F. arXiv https://doi.org/10.48550/arxiv.1903.03339	text	January 2019

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