THM and primordial nucleosynthesis: Results and perspectives

Pizzone, R. G. and Spartá, R. and Bertulani, C. and Spitaleri, C. and La Cognata, iM. and Lamia, L. and Tumino, A. (2016) THM and primordial nucleosynthesis: Results and perspectives. Il nuovo cimento C, 39 (5). pp. 1-5. ISSN 1826-9885

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Big Bang Nucleosynthesis (BBN) requires several nuclear physics inputs and nuclear reaction rates. An up-to-date compilation of direct cross sections of d(d,p)t, d(d,n)3He and 3He(d,p)4He reactions is given, being these ones among the most uncertain bare-nucleus cross sections. An intense experimental effort has been carried on in the last decade to apply the Trojan Horse Method (THM) to study reactions of relevance for the BBN and measure their astrophysical S(E)factor. The reaction rates and the relative error for the four reactions of interest are then numerically calculated in the temperature ranges of relevance for BBN (0.01 <T 9 < 10). Their value were therefore used as input physics for primordial nucleosynthesis calculations in order to evaluate their impact on the calculated primordial abundances of D, 3,4He and 7Li. These were compared with the observational primordial abundance estimates in different astrophysical sites. Reactions to be studied in perspective will also be discussed.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 16 Nov 2020 20:34
Last Modified: 16 Nov 2020 20:34

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