Particle evaporation spectra with inclusion of thermal shape fluctuations

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The origin of the substantial sub-Coulomb component observed in proton and /sup 4/He evaporation spectra at high excitation energy is attributed to the thermal excitation of shape degrees of freedom. A critique of the Hauser-Feshbach theory as used in evaporation codes is presented. A new formalism including the thermal excitation of collective modes as well as quantal penetration in the framework of a transition state approach is derived. 5 figs.

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Pages: 16

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Moretto, L.G. & Bowman, D.R. April 1, 1987.

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Description

The origin of the substantial sub-Coulomb component observed in proton and /sup 4/He evaporation spectra at high excitation energy is attributed to the thermal excitation of shape degrees of freedom. A critique of the Hauser-Feshbach theory as used in evaporation codes is presented. A new formalism including the thermal excitation of collective modes as well as quantal penetration in the framework of a transition state approach is derived. 5 figs.

Physical Description

Pages: 16

Notes

NTIS, PC A02/MF A01; 1.

Source

  • 25. international winter meeting on nuclear physics, Bormio, Italy, 19 Jan 1987

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  • Other: DE87009553
  • Report No.: LBL-23228
  • Report No.: CONF-870153-2
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 6396424
  • Archival Resource Key: ark:/67531/metadc1207583

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Office of Scientific & Technical Information Technical Reports

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  • April 1, 1987

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Oct. 30, 2018, 2:06 p.m.

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Moretto, L.G. & Bowman, D.R. Particle evaporation spectra with inclusion of thermal shape fluctuations, article, April 1, 1987; California. (digital.library.unt.edu/ark:/67531/metadc1207583/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.