Effective temperature and the directional motion of fast ions in a picosecond laser plasma期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Effective temperature and the directional motion of fast ions in a picosecond laser plasma

Authors:	V S Belyaev V I Vinogradov A P Matafonov V P Krainov V S Lisitsa A Ya Faenov T A Pikuz I Yu Skobelev A I Magunov S A Pikuz Jr V P Andrianov G N Ignat’ev Yu I Kozhunov O B Kozlov A M Chekmarev

Institution:	(1) Central Research Institute for Machine Building (TsNIIMASH), ul. Pionerskaya 4, Korolev, Moscow region, 141070, Russia;(2) Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi, Moscow region, 141700, Russia;(3) Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182, Russia;(4) Center of Data on Spectra of Multiply Charged Ions, All-Russia Research Institute of Physicotechnical and Radio Engineering Measurements, Mendeleevo, Moscow region, 141570, Russia;(5) Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 117942, Russia;(6) Joint Institute for High Temperatures, Russian Academy of Sciences, ul. Izhorskaya 13/19, Moscow, 127412, Russia;(7) Research Institute of Pulse Technique, ul. Luganskaya 9, Moscow, 115304, Russia;(8) Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 117924, Russia

Abstract:	Experimental data are reported on the generation of fast ions in a picosecond laser plasma at a laser-radiation intensity of 2 × 10¹⁸ W/cm². The results are obtained by measuring the Doppler spectra of hydrogen-like fluorine ions. An important feature of the energy distribution of fast ions is a slow decrease up to an energy of 1.4 MeV. In addition, the directional motion of fast ions deep into a target is found due to the redshift of the Doppler profile of the Ly _α line. The parameters of the energy distribution of the ions are theoretically estimated.

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