Nuclear data evaluation for explosive hydrogen burning on A = 30-50 nuclei.

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A research program to develop a reaction-rate (RR) data base for stellar explosive hydrogen burning via (p,{gamma}) and (p,{alpha}) reactions involving stable-isotope target elements in the mass range A = 30-50 (phosphorus to titanium) is described. This project includes: (1) a survey of the literature; (2) preparation of written summaries for pertinent contributions; (3) compilation of alpha-numeric information into computer-platform-independent data files; (4) tabulation of reaction resonance parameters (and uncertainties); (5) determination of resonance RRs (and uncertainties) for Maxwellian-distributed reactant energies corresponding to temperatures in the range T{sub 9}=0.01-10 GK (1 GK=10{sup 9} degrees Kelvin); (6) fitting of these calculated ... continued below

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12 p.

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Smith, D. L. February 17, 1998.

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Description

A research program to develop a reaction-rate (RR) data base for stellar explosive hydrogen burning via (p,{gamma}) and (p,{alpha}) reactions involving stable-isotope target elements in the mass range A = 30-50 (phosphorus to titanium) is described. This project includes: (1) a survey of the literature; (2) preparation of written summaries for pertinent contributions; (3) compilation of alpha-numeric information into computer-platform-independent data files; (4) tabulation of reaction resonance parameters (and uncertainties); (5) determination of resonance RRs (and uncertainties) for Maxwellian-distributed reactant energies corresponding to temperatures in the range T{sub 9}=0.01-10 GK (1 GK=10{sup 9} degrees Kelvin); (6) fitting of these calculated RRs with an empirical formula, thereby converting the basic data into a form that is convenient for astrophysical network calculations; (7) examination of deviations between fitted curves and these RRs in the context of the uncertainties. The results of this work are made available to the nuclear astrophysics community through formal laboratory reports and computer files which are distributed to data centers. The procedures used in this work are discussed and some representative examples of products from the activity are given.

Physical Description

12 p.

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OSTI as DE00010656

Medium: P; Size: 12 pages

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  • 2nd Oak Ridge Symposium on Atomic and Nuclear Astrophysics, Oak Ridge, TN (US), 12/02/1997--12/06/1997

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  • Report No.: ANL/TD/CP-95683
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10656
  • Archival Resource Key: ark:/67531/metadc626628

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  • February 17, 1998

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  • June 16, 2015, 7:43 a.m.

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  • April 6, 2017, 8:06 p.m.

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Smith, D. L. Nuclear data evaluation for explosive hydrogen burning on A = 30-50 nuclei., article, February 17, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc626628/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.