Optimizing photonuclear reactions with a high-intensity laser

G. Malka; Marie Madeleine Aleonard; J. F. Chemin; G. Claverie; M. Harston; V. T. Tikhonchuk; J. N. Scheurer; S. Fritzler; Victor Malka; Philippe Balcou; G. Grillon; Stavros D. Moustaizis; L. Notebaert; M. Pittman; Erik Lefebvre

doi:10.1117/12.451264

21 December 2001 Optimizing photonuclear reactions with a high-intensity laser

G. Malka, Marie Madeleine Aleonard, J. F. Chemin, G. Claverie, M. Harston, V. T. Tikhonchuk, J. N. Scheurer, S. Fritzler, Victor Malka, Philippe Balcou, G. Grillon, Stavros D. Moustaizis, L. Notebaert, M. Pittman, Erik Lefebvre

Author Affiliations +

Proceedings Volume 4510, Charged Particle Detection, Diagnostics, and Imaging; (2001) https://doi.org/10.1117/12.451264
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Photo-excitation nuclear reactions induced by the 2J, 30 fs, 4x10¹⁰W/cm², 10 Hz LOA laser were optimized with respect to the thickness of the solid target. Using 6 micrometers CH targets, electrons up to 60 MeV have been produced and converted to (gamma) -rays by Bremsstrahlung in a Ta piece. The rate of photo-fission of ²³⁸U, as well as photo- excitation nuclear reactions in Cu, Au and C samples have been measured. More than 10⁶ nuclear reactions were obtained after 60 subsequent laser shots. The high energy electrons are forward focused, within 15 degree(s), as observed from the angular distribution of the activation in Cu. 1% of laser energy was converted to (gamma) -rays with energies higher than 10 MeV.

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G. Malka, Marie Madeleine Aleonard, J. F. Chemin, G. Claverie, M. Harston, V. T. Tikhonchuk, J. N. Scheurer, S. Fritzler, Victor Malka, Philippe Balcou, G. Grillon, Stavros D. Moustaizis, L. Notebaert, M. Pittman, and Erik Lefebvre "Optimizing photonuclear reactions with a high-intensity laser", Proc. SPIE 4510, Charged Particle Detection, Diagnostics, and Imaging, (21 December 2001); https://doi.org/10.1117/12.451264

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