Measurement of the cross section of the Li-8(d,alpha)He-6 reaction of possible relevance to big bang nucleosynthesis

Sahin, Latife; Boyd, RN; Cole, AL; Famino, M; Guray, RT; Murphy, ASJ; Ozkan, N; Kolata, JJ; Guimaraes, V; Hencheck, M

doi:10.1103/physrevc.65.038801

Measurement of the cross section of the Li-8(d,alpha)He-6 reaction of possible relevance to big bang nucleosynthesis

Atıf İçin Kopyala

Sahin L. , Boyd R., Cole A., Famino M., Guray R., Murphy A., ...Daha Fazla

PHYSICAL REVIEW C, cilt.65, 2002 (SCI İndekslerine Giren Dergi)

Cilt numarası: 65 Konu: 3
Basım Tarihi: 2002
Doi Numarası: 10.1103/physrevc.65.038801
Dergi Adı: PHYSICAL REVIEW C

Özet

We report measurements of the cross section of the Li-8(d, alpha) He-6 reaction in the energy range E-c.m. =2.3-3.5 MeV using a Li-8-radioactive beam on a CD2 foil. The astrophysical S factor and reaction rate were calculated from the measured cross section. The He-6 nuclei produced in the reaction were detected in solidstate detector telescopes. This reaction might have affected the primordial abundance of Li-6 in big bang nucleosynthesis, since He-6 beta decays to Li-6. However, several big bang nucleosynthesis network calculations were found to be insensitive to this reaction, suggesting that the Li-8(d, alpha) He-6 reaction does not affect Li-6 primordial production.