Experimental differential cross sections, level densities, and spin cutoffs as a testing ground for nuclear reaction codes

Voinov, Alexander V.; Grimes, Steven M.; Brune, Carl R.; Burger, Alexander; Gorgen, Andreas; Guttormsen, Magne; Larsen, Ann -Cecilie; Massey, Thomas N.; Siem, Sunniva

doi:10.1103/PhysRevC.88.054607

Title: Experimental differential cross sections, level densities, and spin cutoffs as a testing ground for nuclear reaction codes

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Abstract

Proton double-differential cross sections from ⁵⁹Co(α,p)⁶²Ni, ⁵⁷Fe(α,p)⁶⁰Co, ⁵⁶Fe(⁷Li,p)⁶²Ni, and ⁵⁵Mn(⁶Li,p)⁶⁰Co reactions have been measured with 21-MeV α and 15-MeV lithium beams. Cross sections have been compared against calculations with the empire reaction code. Different input level density models have been tested. It was found that the Gilbert and Cameron [A. Gilbert and A. G. W. Cameron, Can. J. Phys. 43, 1446 (1965)] level density model is best to reproduce experimental data. Level densities and spin cutoff parameters for ⁶²Ni and ⁶⁰Co above the excitation energy range of discrete levels (in continuum) have been obtained with a Monte Carlo technique. Furthermore, excitation energy dependencies were found to be inconsistent with the Fermi-gas model.

Authors:

Voinov, Alexander V. ^[1]; Grimes, Steven M. ^[1]; Brune, Carl R. ^[1]; Burger, Alexander ^[2]; Gorgen, Andreas ^[2]; Guttormsen, Magne ^[2]; Larsen, Ann -Cecilie ^[2]; Massey, Thomas N. ^[1]; Siem, Sunniva ^[2]

Ohio Univ., Athens, OH (United States)
Univ. of Oslo, Oslo (Norway)

Publication Date:: 2013-11-08

Research Org.:: Ohio Univ., Athens, OH (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1254902

Grant/Contract Number:: FG02-88ER40387

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. C, Nuclear Physics

Additional Journal Information:: Journal Volume: 88; Journal Issue: 5; Journal ID: ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Voinov, Alexander V., Grimes, Steven M., Brune, Carl R., Burger, Alexander, Gorgen, Andreas, Guttormsen, Magne, Larsen, Ann -Cecilie, Massey, Thomas N., and Siem, Sunniva. Experimental differential cross sections, level densities, and spin cutoffs as a testing ground for nuclear reaction codes.  United States: N. p., 2013. 
Web.  doi:10.1103/PhysRevC.88.054607.

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                    Voinov, Alexander V., Grimes, Steven M., Brune, Carl R., Burger, Alexander, Gorgen, Andreas, Guttormsen, Magne, Larsen, Ann -Cecilie, Massey, Thomas N., & Siem, Sunniva. Experimental differential cross sections, level densities, and spin cutoffs as a testing ground for nuclear reaction codes.  United States.  https://doi.org/10.1103/PhysRevC.88.054607

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                    Voinov, Alexander V., Grimes, Steven M., Brune, Carl R., Burger, Alexander, Gorgen, Andreas, Guttormsen, Magne, Larsen, Ann -Cecilie, Massey, Thomas N., and Siem, Sunniva. Fri .  
"Experimental differential cross sections, level densities, and spin cutoffs as a testing ground for nuclear reaction codes".  United States.  https://doi.org/10.1103/PhysRevC.88.054607.  https://www.osti.gov/servlets/purl/1254902.

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@article{osti_1254902,

  title        = {Experimental differential cross sections, level densities, and spin cutoffs as a testing ground for nuclear reaction codes},

  author       = {Voinov, Alexander V. and Grimes, Steven M. and Brune, Carl R. and Burger, Alexander and Gorgen, Andreas and Guttormsen, Magne and Larsen, Ann -Cecilie and Massey, Thomas N. and Siem, Sunniva},

  abstractNote = {Proton double-differential cross sections from 59Co(α,p)62Ni, 57Fe(α,p)60Co, 56Fe(7Li,p)62Ni, and 55Mn(6Li,p)60Co reactions have been measured with 21-MeV α and 15-MeV lithium beams. Cross sections have been compared against calculations with the empire reaction code. Different input level density models have been tested. It was found that the Gilbert and Cameron [A. Gilbert and A. G. W. Cameron, Can. J. Phys. 43, 1446 (1965)] level density model is best to reproduce experimental data. Level densities and spin cutoff parameters for 62Ni and 60Co above the excitation energy range of discrete levels (in continuum) have been obtained with a Monte Carlo technique. Furthermore, excitation energy dependencies were found to be inconsistent with the Fermi-gas model.},

  doi          = {10.1103/PhysRevC.88.054607},

  journal      = {Physical Review. C, Nuclear Physics},

  number       = 5,

  volume       = 88,

  place        = {United States},

  year         = {2013},

  month        = {11}

}

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