Efficient neutron generation from solid-nanoparticle explosions driven by DPSSL-pumped high-repetition rate femtosecond laser pulse

8th International Conference on Inertial Fusion Sciences and Applications

Watari, T.^1 ; Matsukado, K.^1 ; Sekine, T.^1 ; Takeuchi, Y.^1 ; Hatano, Y.^1 ; Yoshimura, R.^1 ; Satoh, N.^1 ; Nishihara, K.^1 ; Takagi, M.^1 ; Kawashima, T.^1

Hamamatsu Photonics, 1820 Kurematsu, Hamamatsu

431-1202, Japan^1

关键词: Cluster fusion;    Continuous operation;    Coulomb explosion;    Generation experiments;    High intensity lasers;    High repetition rate;    Intense femtosecond laser pulse;    Solid nanoparticles;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012125/pdf
DOI  :  10.1088/1742-6596/688/1/012125

来源: IOP

【 摘 要 】

We propose novel neutron source using high-intensity laser based on the cluster fusion scheme. We developed DPSSL-pumped high-repetition-rate 20-TW laser system and solid nanoparticle target for neutron generation demonstration. In our neutron generation experiment, high-energy deuterons were generated from coulomb explosion of CD solid- nanoparticles and neutrons were generated by DD fusion reaction. Efficient and stable neutron generation was obtained by irradiating an intense femtosecond laser pulse of >2×1018W/cm2. A yield of ∼105neutrons per shot was stably observed during 0.1-1 Hz continuous operation.