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Simultaneous Investigation of the Nuclear Reactions $${}^{11}$$ B $$\boldsymbol{(p,3\alpha)}$$ and $${}^{11}$$ B $$\boldsymbol{(p,n)^{11}}$$ C as a New Tool for Determining the Absolute Yield of Alpha Particles in Picosecond Plasmas
Physics of Atomic Nuclei ( IF 0.4 ) Pub Date : 2020-10-13 , DOI: 10.1134/s1063778820050063
V. S. Belyaev , A. P. Matafonov , V. P. Krainov , A. Yu. Kedrov , B. V. Zagreev , A. S. Rusetsky , N. G. Borisenko , A. I. Gromov , A. V. Lobanov , V. S. Lisitsa

Abstract

The results of experimental investigations devoted to initiating the promising nuclear fusion reaction \({}^{11}\)B\((p,3\alpha)\) in picosecond laser plasmas at a laser-radiation intensity of \(5\times 10^{18}\) W/cm\({}^{2}\) are presented. A new tool for determining the absolute yield of alpha particles in the reaction \({}^{11}\)B\((p,3\alpha)\) on the basis of simultaneously measuring the number of neutrons in the reference nuclear reaction \({}^{11}\)B\((p,n)^{11}\)C is proposed. At the above values of the laser-pulse parameters, the application of this new procedure to estimating the total number of alpha particles per pulse from the reaction \({}^{11}\)B\((p,3\alpha)\) leads to a value of 10\({}^{8}\) particles within a solid angle of 4\(\pi\) sr. The results presented here differ substantially from the data obtained in measuring the single-channel yield of alpha particles.



中文翻译:

核反应的同时调查$$ {} ^ {11} $$ B $$ \ boldsymbol {(p,3 \ alpha)} $$和$$ {} ^ {11} $$ B $$ \ boldsymbol {( p,n)^ {11}} $$ C作为确定皮秒等离子体中α粒子绝对产率的新工具

摘要

实验研究的结果致力于在皮秒激光等离子体中以\(5 \)的激光强度引发有希望的核聚变反应\ {{} ^ {11} \) B \ { p,3 \ alpha)\出现10 ^ {18} \) W / cm \({} ^ {2} \)。一种在同时测量参考核中的中子数的基础上确定反应\({{} ^ {11} \) B \((p,3 \ alpha)\)中α粒子的绝对产率的新工具反应\({} ^ {11} \) B \((p,n)^ {11} \)建议C。在上述激光脉冲参数值下,此新过程的应用可用于根据反应\({} ^ {11} \) B \((p,3 \ alpha)来估计每个脉冲的alpha粒子总数。\)导致在4 \(\ pi \) sr的立体角内有10个\({} ^ {8} \)粒子的值。此处显示的结果与测量α粒子单通道产量时获得的数据有很大不同。

更新日期:2020-10-13
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