Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (34) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
Neutron capture rates in the r-process - The role of direct radiative capture
Authors:
Mathews, G. J.; Mengoni, A.; Thielemann, F.-K.; Fowler, W. A.
Affiliation:
AA(California, University, Livermore, CA), AB(Kernforschungszentrum Karlsruhe GmbH, Karlsruhe, Germany), AC(Max-Planck-Institut für Physik und Astrophysik, Munich, Germany), AD(California Institute of Technology, Pasadena, CA)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 270, July 15, 1983, p. 740-745. (ApJ Homepage)
Publication Date:
07/1983
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Absorption Cross Sections, Neutron Cross Sections, Nuclear Fusion, Supernovae, Nuclear Physics, Nuclear Spin, Statistical Analysis, Stellar Models
DOI:
10.1086/161164
Bibliographic Code:
1983ApJ...270..740M

Abstract

The nuclear physics associated with neutron capture along the r-process path is reviewed, and it is noted that the usual statistical assumptions for the capture rates may not be valid. A comparison with statistical model calculations reveals that direct radiative capture may be the dominant reaction mechanism in the vicinity of and beyond the r-process path. The fact that the direct radiative capture mechanism represents a firm lower limit to the nuclear cross section is used to infer an upper limit of 1.5×1020 cm-3 for the critical neutron density necessary to guarantee (n, γ) equilibrium in the r-process.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints