High-currents of multi-MeV protons and fusion neutrons produced by 3-TW sub-nanosecond laser beam

J. Krása*, D. Margarone, D. Klír, A. Velyhan, E. Krouský, K. Rezác, J. Kravárik, K. Jungwirth, J. Ullschmied

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Multi-MeV ions and fusion neutrons were generated by focused radiation of the 3-TW Prague Asterix Laser System (PALS). In our experiments a maximum proton energy of about 4 MeV was generated by a laser irradiance Iλ 2~5×1016 W cm-2 μm2 on target, which is nominally reachable at Iλ2~3×1018 W cm-2 μm2 for picosecond-class lasers [1,2]. This value of 4 MeV well correlates with the proton scaling law obtained experimentally at the Omega EP facility from 10-ps laser pulses [3]. When a massive deuterated polyethylene target was exposed to the laser intensity of about 3×10 16 W/cm2 a neutron yield of about 3×108 neutrons per shot was recorded. Moreover, the deuterons emitted from the target front surface had enough energy to produce high energy neutrons through the 7Li(d,xn) reaction when impinging a LiF slab.

Original languageEnglish
Title of host publication40th EPS Conference on Plasma Physics, EPS 2013
PublisherEuropean Physical Society (EPS)
Pages181-184
Number of pages4
ISBN (Print)9781632663108
Publication statusPublished - 01 Jan 2013
Externally publishedYes
Event40th EPS Conference on Plasma Physics, EPS 2013 - Espoo, Finland
Duration: 01 Jul 201305 Jul 2013

Publication series

Name40th EPS Conference on Plasma Physics, EPS 2013
Volume1

Conference

Conference40th EPS Conference on Plasma Physics, EPS 2013
CountryFinland
CityEspoo
Period01/07/201305/07/2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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    Krása, J., Margarone, D., Klír, D., Velyhan, A., Krouský, E., Rezác, K., Kravárik, J., Jungwirth, K., & Ullschmied, J. (2013). High-currents of multi-MeV protons and fusion neutrons produced by 3-TW sub-nanosecond laser beam. In 40th EPS Conference on Plasma Physics, EPS 2013 (pp. 181-184). (40th EPS Conference on Plasma Physics, EPS 2013; Vol. 1). European Physical Society (EPS).