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arXiv 2302.01272nucl-thastro-ph.SRnucl-ex
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热效应与原子效应对耦合通道重离子聚变的影响

Thermal and atomic effects on coupled-channels heavy-ion fusion

Iain Lee, Gilbert Gosselin, Alexis Diaz-Torres

AI总结:

本文利用开放量子系统理论研究了恒星环境中的热效应和原子效应对重离子聚变概率的影响,发现与零温计算相比,热效应在0.1和0.5 MeV下使188Os与16O的聚变概率分别增加15.5%和36.9%。

摘要:

恒星核聚变反应发生在恒星内部的高温致密等离子体中。为了考虑这些环境的影响,本文利用开放量子系统理论,对广泛温度和密度下聚变概率的热效应和原子效应进行了开创性研究。由于在恒星温度下低激发态更容易被占据,从而增加核等离子体相互作用率,因此使用188Os核作为靶,与惰性16O弹核发生相互作用。关键结果表明,与零温下的计算相比,在0.1和0.5 MeV温度下,热效应使测试核的聚变概率分别平均增加了15.5%和36.9%。利用制备在激发态的靶核,可以在实验室中检验热效应,正如利用激光-核相互作用的设施中所设想的那样。

英文摘要:

Stellar nuclear fusion reactions take place in a hot, dense plasma within stars. To account for the effect of these environments, the theory of open quantum systems is used to conduct pioneering studies of thermal and atomic effects on fusion probability at a broad range of temperatures and densities. Since low-lying excited states are more likely to be populated at stellar temperatures and increase nuclear plasma interaction rates, a 188Os nucleus was used as a target that interacts with an inert 16O projectile. Key results showed thermal effects yield an average increase in fusion probability of 15.5% and 36.9% for our test nuclei at temperatures of 0.1 and 0.5 MeV respectively, compared to calculations at zero temperature. Thermal effects could be tested in a laboratory using targets prepared in excited states as envisaged in facilities exploiting laser-nucleus interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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