Determination of the Astrophysical S-factor Near Zero Energy

Details Determination of the Astrophysical S-factor Near Zero Energy Determination of the Astrophysical S-factor Near Zero Energy

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..899..537o&link_type=abstract

SIXTH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION. AIP Conference Proceedings, Volume 899, pp. 537-537 (2007).

Astronomy and Astrophysics

Astrophysics

Radiative Capture, Direct Reactions, Scattering Theory

Scientific paper

The astrophysical S-factor for radiative-capture reactions is reviewed at zero energy in the simplified potential models since the determination of reaction rates in astrophysics requires accurate values of radiative-capture cross sections at very low energy values. The Taylor expansion of the astrophvsical S-factor is calculated. The radial Schrödinger equation and its derivatives are solved at zero energy by taking corresponding exact asymptotic forms of wave functions into account. Explicit expressions for the S-factor and for its derivatives at zero energy are obtained. The procedure is applied to 3He(α,γ)7Be reaction as an example.

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