大爆炸核合成能的D（P，伽马）3HE横截面的设置调试，以改进D（P，伽马）

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大爆炸核合成能的D（P，伽马）3HE横截面的设置调试，以改进D（P，伽马）

Setup commissioning for an improved measurement of the D(p,gamma)3He cross section at Big Bang Nucleosynthesis energies

论文作者

Mossa, V., Stöckel, K., Cavanna, F., Ferraro, F., Aliotta, M., Barile, F., Bemmerer, D., Best, A., Boeltzig, A., Broggini, C., Bruno, C. G., Caciolli, A., Csedreki, L., Chillery, T., Ciani, G. F., Corvisiero, P., Davinson, T., Depalo, R., Di Leva, A., Elekes, Z., Fiore, E. M., Formicola, A., Fülöp, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyürky, G., Imbriani, G., Junker, M., Kochanek, I., Lugaro, M., Marcucci, L. E., Marigo, P., Masha, E., Menegazzo, R., Pantaleo, F. R., Paticchio, V., Perrino, R., Piatti, D., Prati, P., Schiavulli, L., Straniero, O., Szücs, T., Takács, M. P., Trezzi, D., Zavatarelli, S., Zorzi, G.

论文摘要

在大爆炸核合成过程中涉及氘生成和破坏氘的反应中，燃烧氘的D（P，Gamma）3HE反应具有最大的不确定性，并限制了原始氘核丰度的理论估计值的精确度。在这里，我们报告了用于测量D（P，Gamma）3E反应的实验设置的仔细调试的结果，该反应是在Gran Sasso实验室（意大利）的地下核天体物理学实验室的横截面。该调试旨在最大程度地减少测得的横截面中系统不确定性的所有来源。达到的总体系统错误（<3％）将能够改善BBN氘丰度的预测。

Among the reactions involved in the production and destruction of deuterium during Big Bang Nucleosynthesis, the deuterium-burning D(p,gamma)3He reaction has the largest uncertainty and limits the precision of theoretical estimates of primordial deuterium abundance. Here we report the results of a careful commissioning of the experimental setup used to measure the cross-section of the D(p,gamma)3He reaction at the Laboratory for Underground Nuclear Astrophysics of the Gran Sasso Laboratory (Italy). The commissioning was aimed at minimising all sources of systematic uncertainty in the measured cross sections. The overall systematic error achieved (< 3 %) will enable improved predictions of BBN deuterium abundance.

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