Elsevier

Nuclear Physics A

Volume 515, Issue 2, 27 August 1990, Pages 338-348
Nuclear Physics A

7Li(3He, p)9Be Reaction and primordial nucleosynthesis

https://doi.org/10.1016/0375-9474(90)90371-RGet rights and content

Abstract

The differential cross section for the 7Li(3He, p)9Be reaction has been measured in 50 keV intervals at 8 angles (15°–160°) in the energy range from Ec.m. = 0.5 to 2.0 MeV, and total cross sections were determined from these data. Since this reaction has been noted as being of possible importance in primordial nucleosynthesis, its astrophysical S-factor was calculated from the data. In addition, the S-factor for the 7Li(3H, n)9Be reaction, also of importance in primordial nucleo-synthesis, was estimated from the7Li(3He, p)9Be data and its thermonuclear reaction rate was calculated.

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    • Differential cross sections for <sup>7</sup>Li(<sup>3</sup>He,p<inf>0</inf>~<inf>4</inf>)<sup>9</sup>Be, <sup>7</sup>Li(<sup>3</sup>He,d<inf>0</inf>)<sup>8</sup>Be and <sup>6</sup>Li(<sup>3</sup>He,p<inf>0</inf>)<sup>8</sup>Be from 1.2 to 3 MeV

      2021, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
      Citation Excerpt :

      The measured differential cross sections together with the published data in literature are shown in Fig. 5 and tabulated in Table 3. Resonances are observed at 3He bombarding energies 1.4 MeV and 2.2 MeV (Fig. 5(a), (b) and (e)), corresponding to states in the compound nucleus 10B at excitations 18.80 and 19.29 MeV, respectively [21]. But the absolute values in this work are smaller than those measured by I. I. Bondouk and Y. C. Lru [20,18].

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