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In this paper the astrophysical aspects of neutron capture reactions in the neutron range from a few eV to 500 keV are discussed in its impact for the formation of the chemical elements in r-process and especially in s-process nucleosynthesis. The mathematical formalism of s-process nucleosynthesis is given in great detail. The importance of compound and direct neutron capture is demonstrated by means of selected examples. The isotopes with small neutron capture cross section at the magic neutron and proton shells play a crucial role as neutron monitors of the synthesis. Therefore measurements of these isotopes are the basis for a quantitative analysis. Details of the experimental techniques are given in the discussion of the reactions S-36 (n,gamma), Ba-138 (n,gamma), Pb-208 (n,gamma).

Additional information

Authors: BEER H, Forschungszentrum Karlsruhe GmbH (DE);OBERHUMMER H, Institut für Kernphysik, TuWien (AT);CORVI F, JRC Geel (BE)
Bibliographic Reference: Paper presented: VII International School on Neutron Physics, Dubna (SU), September 3-11, 1995
Availability: Available from (1) as Paper EN 39449 ORA
Record Number: 199512088 / Last updated on: 1996-01-15
Original language: en
Available languages: en