Europhys. Lett.
Volume 48, Number 3, November 1999
Page(s) 264 - 268
Section Nuclear physics
Published online 01 September 2002
DOI: 10.1209/epl/i1999-00475-5

Europhys. Lett, 48 (3), pp. 264-268 (1999)

Branching ratios and screening effect in the $\rm d+d$ nuclear interaction

A. Boughrara 1, H. Beaumevieille 2 and S. Ouichaoui 1

1 Institut de Physique, Université des Sciences et de la Technologie Houari-Boumediene
BP 32, El-Alia, Bab-Ezzouar, Alger, Algeria
2 Institut des Sciences Nucléaires, IN2P3-CNRS et Université Joseph-Fourier
53, avenue des Martyrs, 38026 Grenoble cedex, France

(received 17 May 1999; accepted 31 August 1999)

PACS. 27.10${\rm +h}$ - $A \le 5$.
PACS. 95.30${\rm -k}$ - Fundamental aspects of astrophysics.


Using the WKB approximation for the evaluation of penetrabilities at stellar energies, the D(d, p)T and $\rm D(d,n)^3He$ total cross-sections are analysed in the energy range 0-100 keV (c.m.). The s and p wave contributions are extracted in each of these reactions. The branching ratios calculated from this partial wave decomposition are in good agreement with the experimental values deduced from muon catalyzed fusion and with those calculated from R-matrix theory. The screening effect is studied and the U0 electron screening potential discussed.


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