Hauser-Feshbach calculations in deformed nuclei

Grimes, S. M.

doi:10.1103/PhysRevC.88.024613

Title: Hauser-Feshbach calculations in deformed nuclei

Abstract

Hauser Feshbach calculations for deformed nuclei are typically done with level densities appropriate for deformed nuclei but with Hauser Feshbach codes which enforce spherical symmetry by not including K as a parameter in the decay sums. A code has been written which does allow the full K dependence to be included. Calculations with the code have been compared with those from a conventional Hauser Feshbach code. The evaporation portion (continuum) is only slightly affected by this change but the cross sections to individual (resolved) levels are changed substantially. It is found that cross sections to neighboring levels with the same J but differing K are not the same. The predicted consequences of K mixing will also be discussed.

Authors:

Grimes, S. M. ^[1]

Ohio Univ., Athens, OH (United States)

Publication Date:: Thu Aug 22 00:00:00 EDT 2013

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1245619

Grant/Contract Number:: FG02-88ER40387

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C, Nuclear Physics

Additional Journal Information:: Journal Volume: 88; Journal Issue: 2; Journal ID: ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Hauser-Feshbach; deformed nuclei; cross section calculations

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                    Grimes, S. M. Hauser-Feshbach calculations in deformed nuclei.  United States: N. p., 2013. 
Web.  doi:10.1103/PhysRevC.88.024613.

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                    Grimes, S. M. Hauser-Feshbach calculations in deformed nuclei.  United States.  https://doi.org/10.1103/PhysRevC.88.024613

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                    Grimes, S. M. Thu .  
"Hauser-Feshbach calculations in deformed nuclei".  United States.  https://doi.org/10.1103/PhysRevC.88.024613.  https://www.osti.gov/servlets/purl/1245619.

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@article{osti_1245619,

  title        = {Hauser-Feshbach calculations in deformed nuclei},

  author       = {Grimes, S. M.},

  abstractNote = {Hauser Feshbach calculations for deformed nuclei are typically done with level densities appropriate for deformed nuclei but with Hauser Feshbach codes which enforce spherical symmetry by not including K as a parameter in the decay sums. A code has been written which does allow the full K dependence to be included. Calculations with the code have been compared with those from a conventional Hauser Feshbach code. The evaporation portion (continuum) is only slightly affected by this change but the cross sections to individual (resolved) levels are changed substantially. It is found that cross sections to neighboring levels with the same J but differing K are not the same. The predicted consequences of K mixing will also be discussed.},

  doi          = {10.1103/PhysRevC.88.024613},

  journal      = {Physical Review C, Nuclear Physics},

  number       = 2,

  volume       = 88,

  place        = {United States},

  year         = {Thu Aug 22 00:00:00 EDT 2013},

  month        = {Thu Aug 22 00:00:00 EDT 2013}

}

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Works referenced in this record:

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Works referencing / citing this record:

Level density rotational enhancement factor
journal, June 2019

Grimes, S. M.; Massey, T. N.; Voinov, A. V.
Physical Review C, Vol. 99, Issue 6
DOI: 10.1103/physrevc.99.064331

Nuclear Level Density of Heavy Nuclei z≥90 Through Semiclassical Method
journal, January 2014

Pahlavani, M. R.; Alavi, S. A.; Farhadi, E.
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Similar Records

Title: Hauser-Feshbach calculations in deformed nuclei

Abstract

Citation Formats

Investigation of the Bohr-Independence Hypothesis for Nuclear Reactions in the Continuum: α + Co 59 , p + Ni 62 and α + Fe 56 , p + Cl 59 journal, November 1969

Calculation of nuclear reaction cross sections on excited nuclei with the coupled-channels method journal, August 2009

Conservation of Angular Momentum in the Statistical Theory of Nuclear Reactions journal, June 1951

Search for the fade out of a collective enhancement of the nuclear level density journal, June 2007

Conditions for observation of fade out of collective enhancement of the nuclear level density journal, November 2008

Anomalous optical potential for sub-Coulomb barrier protons journal, August 1980

Level densities for 20 <~ A <~ 110 journal, January 2003

Statistics and Nuclear Reactions journal, August 1937

Optical-model analysis of the scattering of 24.7 MeV alpha particles journal, August 1966

Local and global nucleon optical models from 1 keV to 200 MeV journal, January 2003

Role of Isospin in Statistical Processes journal, January 1972

New perspectives on the level density of compound resonances journal, October 1984

On the Yield of Nuclear Reactions with Heavy Elements journal, March 1940

Isospin mixing in In 111 and the inclusion of additional terms in the mixing formalism journal, April 1977

Role of isospin in neutron- and alpha-induced reactions journal, September 1992

Distribution of compound-nucleus shapes and its influence on evaporation journal, April 2000

Further explorations of the α -particle optical model potential at low energies for the mass range A ≈ 45 –209 journal, October 2014

Level density and spin cutoff parameters from continuum ( p , n ) and ( α , n ) spectra journal, December 1974

Effects of nuclear deformation on Eu 1 5 1 , 1 5 3 ( p , n ) 1 5 1 , 1 5 3 Gd reactions journal, August 1990

Comparison of neutron resonance spacings with microscopic theory for nuclei with static deformation journal, May 1974

The Inelastic Scattering of Neutrons journal, July 1952

Target-state dependence of cross sections for reactions on statically deformed nuclei journal, April 2012

Test of gamma-ray strength functions in nuclear reaction model calculations journal, May 1990

Level density rotational enhancement factor journal, June 2019

Nuclear Level Density of Heavy Nuclei z≥90 Through Semiclassical Method journal, January 2014

Investigation of the Bohr-Independence Hypothesis for Nuclear Reactions in the Continuum: $α$ + ${Co}^{59}$ , $p$ + ${Ni}^{62}$ and $α$ + ${Fe}^{56}$ , $p$ + ${Cl}^{59}$
journal, November 1969

Calculation of nuclear reaction cross sections on excited nuclei with the coupled-channels method
journal, August 2009

Conservation of Angular Momentum in the Statistical Theory of Nuclear Reactions
journal, June 1951

Search for the fade out of a collective enhancement of the nuclear level density
journal, June 2007

Conditions for observation of fade out of collective enhancement of the nuclear level density
journal, November 2008

Anomalous optical potential for sub-Coulomb barrier protons
journal, August 1980

Level densities for $20 <~ A <~ 110$
journal, January 2003

Statistics and Nuclear Reactions
journal, August 1937

Optical-model analysis of the scattering of 24.7 MeV alpha particles
journal, August 1966

Local and global nucleon optical models from 1 keV to 200 MeV
journal, January 2003

Role of Isospin in Statistical Processes
journal, January 1972

New perspectives on the level density of compound resonances
journal, October 1984

On the Yield of Nuclear Reactions with Heavy Elements
journal, March 1940

Isospin mixing in ${}^{111}{In}$ and the inclusion of additional terms in the mixing formalism
journal, April 1977

Role of isospin in neutron- and alpha-induced reactions
journal, September 1992

Distribution of compound-nucleus shapes and its influence on evaporation
journal, April 2000

Further explorations of the $α$ -particle optical model potential at low energies for the mass range $A \approx 45$ –209
journal, October 2014

Level density and spin cutoff parameters from continuum ( $p, n$ ) and ( $α, n$ ) spectra
journal, December 1974

Effects of nuclear deformation on ${}^{151, 153}{Eu}$ ( p , n $)^{151, 153}$ Gd reactions
journal, August 1990

Comparison of neutron resonance spacings with microscopic theory for nuclei with static deformation
journal, May 1974

The Inelastic Scattering of Neutrons
journal, July 1952

Target-state dependence of cross sections for reactions on statically deformed nuclei
journal, April 2012

Test of gamma-ray strength functions in nuclear reaction model calculations
journal, May 1990

Level density rotational enhancement factor
journal, June 2019

Nuclear Level Density of Heavy Nuclei z≥90 Through Semiclassical Method
journal, January 2014