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首页> 外文期刊>Journal of Physics, G. Nuclear and Particle Physics: An Institute of Physics Journal >Analysis of the ~(19)F(p, α_0)~(16)O reaction at low energies and the spectroscopy of 20Ne
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Analysis of the ~(19)F(p, α_0)~(16)O reaction at low energies and the spectroscopy of 20Ne

机译：低能〜（19）F（p，α_0）〜（16）O反应的分析及20Ne的光谱

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摘要

The investigation of the ~(19)F(p, α_0) reaction at low bombarding energies allows the study of the spectroscopy of the ~(20)Ne compound nucleus in an energy region where the existence of quartet excitations has been suggested in the literature. Moreover, this reaction plays a major role in the fourth branch of the CNO cycle since it is relevant for the correct description of the hydrogen burning of fluorine in stars. For these reasons, we decided to investigate the ~(19)F(p, α_0) reaction in the E_p ? 0.6-1 MeV energy range. The analysis of angular distributions and excitation functions allows one to improve the ~(20)Ne spectroscopy in an excitation energy region where some ambiguities concerning J~π assignments exist in the literature. In particular, the present data suggest a J~π = 0 ~+ assignment to the E_x = 13.642 MeV resonance. For this state, both partial and reduced widths for the α_0 channel have been deduced. The trend of the astrophysical factor has been obtained from the integrated cross section. A comparison of the present results with data reported in the literature is also discussed.
机译：在低轰击能量下对〜（19）F（p，α_0）反应的研究使人们能够研究某个能量区中〜（20）Ne复合核的光谱，在该能量区中已经提出了四重激发的存在。 。此外，该反应在CNO循环的第四分支中起着重要作用，因为它与正确描述恒星中氟的氢燃烧有关。由于这些原因，我们决定研究E_p？中的〜（19）F（p，α_0）反应。 0.6-1 MeV能量范围。角度分布和激发函数的分析使人们能够改善激发能量区域中的〜（20）Ne光谱，在文献中存在与J〜π分配有关的一些歧义。特别地，当前数据表明对E_x ＝ 13.642MeV共振的J〜π＝ 0〜+分配。对于此状态，已经推断出α_0通道的部分宽度和减小的宽度。天体物理因子的趋势已从综合截面中获得。还讨论了本结果与文献报道的数据的比较。

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