论文标题
由激光加速的硼离子发起的H-11B融合产生的α粒子生成
Alpha-particle generation from H-11B fusion initiated by laser-accelerated boron ions
论文作者
论文摘要
在这里，我们报告了由激光加速硼离子引发的H-11B融合中的MEVα粒子的产生。最大能量为6mev的硼离子和10^9/meV/sr@5meV的通量是由1J femtsecond脉冲辐射的60 nm厚的自支撑硼纳米油的产生的，其强度为10^19W/cm^2。通过用硼离子轰击次级氢靶标，注册了H-11B融合中的3*10^5/SRα粒子，这与根据测得的硼能光谱计算得出的理论产量一致。我们的结果证明了采用紧凑型飞秒激光器的超短MEV Alpha粒子来源的另一种方法。离子加速度和产品测量方案是针对固体或血浆中H-11B反应的离子停止功率和横截面的研究的参考。
Here we report the generation of MeV alpha-particles from H-11B fusion initiated by laser-accelerated boron ions. Boron ions with maximum energy of 6MeV and fluence of 10^9/MeV/sr@5MeV were generated from 60-nm-thick self-supporting boron nanofoils irradiated by 1J femtosecond pulses at an intensity of 10^19W/cm^2. By bombarding secondary hydrogenous targets with the boron ions, 3*10^5/sr alpha-particles from H-11B fusion were registered, which is consistent with the theoretical yield calculated from the measured boron energy spectra. Our results demonstrate an alternative way toward ultrashort MeV alpha-particle sources employing compact femtosecond lasers. The ion acceleration and product measurement scheme are referential for the studies on the ion stopping power and cross-section of the H-11B reaction in solid or plasma.
