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Neutron production in picosecond laser-generated plasma on a be target |
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| Authors: | V S Belyaev V I Vinogradov A P Matafonov V P Krainov V S Lisitsa A Ya Faenov V P Andrianov G N Ignatiev Yu I Kozhunov O B Kozlov |
| Institution: | (1) Central Research Institute of Machine Building, Korolev, Moscow oblast, Russia;(2) Moscow Institute of Physics and Technology, Institutskiĭ pr. 9., Dolgoprudnyĭ, Moscow oblast, 141700, Russia;(3) Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia;(4) VNIIFTRI Data Center for Multicharged-Ion Spectra, Mendeleevo, Moscow oblast, 141570, Russia;(5) Research Institute of Pulse Technology, Moscow, Russia |
| Abstract: | Experimental data on neutron production in a plasma generated on a Be target by a picosecond laser of intensity 2 × 1018 W/cm2 are presented. In contrast to previous measurements, a Ta converter is not used in this study to generate γ rays. The neutron yield is equal to 2 × 103 over a solid angle of 4π steradians per laser pulse. A simultaneous measurement of the maximum energy of hard x rays gave E γmax ～ 6 MeV, the number of these photons being 5 × 108 over an angle of 4π steradians per laser pulse. The energy distributions of fast electrons and photons are estimated theoretically. |
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