First measurements of laser-accelerated proton induced luminescence

Journal Article · Sat Sep 15 00:00:00 EDT 2012 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4753939· OSTI ID:22086196

Floquet, V; Ceccotti, T; Dobosz Dufrenoy, S; Bonnaud, G; Monot, P; Martin, Ph ^[1]; Gremillet, L ^[2]

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1. CEA, IRAMIS, SPAM, F-91191 Gif sur Yvette (France)
2. CEA, DAM, DIF, Bruyeres-le-Chatel, 91297 Arpajon (France)

We present our first results about laser-accelerated proton induced luminescence in solids. In the first part, we describe the optimization of the proton source as a function of the target thickness as well as the laser pulse duration and energy. Due to the ultra high contrast ratio of our laser beam, we succeeded in using targets ranging from the micron scale down to nanometers thickness. The two optimal thicknesses we put in evidence are in good agreement with numerical simulations. Laser pulse duration shows a small influence on proton maximum energy, whereas the latter turns out to vary almost linearly as a function of laser energy. Thanks to this optimisation work, we have been able to acquire images of the proton energy deposition in a solid scintillator.

• OSTI ID: 22086196
• Journal Information: Physics of Plasmas, Vol. 19, Issue 9; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COMPUTERIZED SIMULATION
ENERGY ABSORPTION
LASER TARGETS
LASERS
LUMINESCENCE
OPTIMIZATION
PHOTON BEAMS
PROTON SOURCES
PROTONS
PULSES
SOLIDS
THICKNESS