THE <sup>2</sup>H(alpha, gamma)<sup>6</sup>LI REACTION AT LUNA AND BIG BANG NUCLEOSYNTHETIS
The <sup>2</sup>H(α, γ)<sup>6</sup>Li reaction is the leading process for the production of <sup>6</sup>Li in standard Big Bang Nucleosynthesis. Recent observations of lithium abundance in metal-poor halo stars suggest that there might be a 6Li plateau, similar to...
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| Format: | Article |
| Language: | English |
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CTU Central Library
2013-12-01
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| Series: | Acta Polytechnica |
| Online Access: | https://ojs.cvut.cz/ojs/index.php/ap/article/view/1892 |
| Summary: | The <sup>2</sup>H(α, γ)<sup>6</sup>Li reaction is the leading process for the production of <sup>6</sup>Li in standard Big Bang Nucleosynthesis. Recent observations of lithium abundance in metal-poor halo stars suggest that there might be a 6Li plateau, similar to the well-known Spite plateau of <sup>7</sup>Li. This calls for a re-investigation of the standard production channel for <sup>6</sup>Li. As the <sup>2</sup>H(α, γ)<sup>6</sup>Li cross section drops steeply at low energy, it has never before been studied directly at Big Bang energies. For the first time the reaction has been studied directly at Big Bang energies at the LUNA accelerator. The preliminary data and their implications for Big Bang nucleosynthesis and the purported <sup>6</sup>Li problem will be shown. |
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| ISSN: | 1210-2709 1805-2363 |