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Comparative roles of pp chain reactions as a trigger for suprathermal processes in the solar core

机译：PP链反应的比较作用作为太阳核心的上班族过程的触发

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摘要

Continuing the study of suprathermal effects in the solar core [Phys. Rev. C 91, 028801 (2015); J. Phys. G 44, 045202 (2017)], we examine the roles of different pp chain processes generating fast α particles as trigger for suprathermal B(α,p)A reactions neglected in standard solar model simulations. The suprathermal impact on the balance of the p + ~(17)O ⇄ α + 14N reactions involved in the solar CNO cycle is determined. It is obtained that MeV α particles born in the ~7Li(p,α)α and ~3He(~3He,2p)α reactions are the main agents that are able to crucially change the reaction balance through an appreciable enhancement of the reverse (α,p) reaction. The comparative role of the p + ~7Li and ~3He + ~3He α particles is clarified. It is found that the former particles control the reverse ~(14)N(α,p)~(17)O reaction in the inner core, while the latter ones play a dominant role in the outer core, additionally increasing the (α,p) reaction rate by several times and providing favorable conditions for synthesis of some elements. In particular, we show that the total suprathermal enhancement of ~(17)O and ~(18)O mass fractions in the outer core can reach ～80 or 50, depending on a model for α-particle energy loss used in the simulation. In this context, we note that the p + ~7Li α particles alone provide the mass fraction enhancement by a factor of 20 or less.
机译：继续研究太阳核心的同龄效应[物理。 Rev. C 91,028801（2015）; J. Phy。 G 44,045202（2017）]检查不同PP链过程的作用，产生快速α颗粒作为Suprathermal B（α，P）在标准太阳能模型模拟中被忽略的反应的触发。确定了对太阳能CNO循环中涉及的P +〜（17）Oα+ 14N + 14N反应的平衡的上班的影响。获得的是，在〜7LI（P，α）α和〜3He（〜3He，2P）α反应中出生的MEVα颗粒是能够通过逆转的可观增强来关键地改变反应平衡的主要药剂（ α，p）反应。澄清了P +〜7LI和〜3He +〜3Heα颗粒的对比作用。发现前颗粒在内芯中控制反向〜（14）n（α，p）〜（17）O反应，而后者在外核中起主要作用，另外增加（α， P）反应速率几次，并为合成一些元素提供有利条件。特别地，我们表明外核中的〜（17）o和〜（18）o质量级分的总同性量率增强可以达到〜80或50，这取决于模拟中使用的α-粒子能量损失的模型。在这种情况下，我们注意到单独的P +〜7LIα颗粒将质量分数增强提供20或更小。

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  • 来源
    《Physical Review C》 |2017年第2017期|055803.1-055803.8|共8页
  • 作者

    Victor T. Voronchev; Yasuyuki Nakao; Yukinobu Watanabe;

  • 作者单位

    Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University Moscow 119991 Russia;

    Green Asia Education Center Kyushu University 6-1 Kasuga-koen Kasuga Fukuoka 816-8580 Japan;

    Department of Advanced Energy Engineering Science Kyushu University 6-1 Kasuga-koen Kasuga Fukuoka 816-8580 Japan;

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