Effect of target composition on proton energy spectra in ultraintense laser-solid interactions

We study how the proton density in a target irradiated by an ultraintense laser affects the proton spectrum, with analytical models and Vlasov simulations. A low relative proton density gives rise to peaks in the energy spectrum. Furthermore, a target with the protons confined to a thin, low density...

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Bibliographic Details
Published in:Physical review letters 2006-01, Vol.96 (3), p.035005-035005, Article 035005
Main Authors: Robinson, A P L, Bell, A R, Kingham, R J
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ENERGY SPECTRA
IRRADIATION
LASERS
LAYERS
PLASMA
PLASMA SIMULATION
PROTON BEAMS
PROTON DENSITY
PROTON RADIOGRAPHY
PROTON SPECTRA
PROTONS
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Summary:We study how the proton density in a target irradiated by an ultraintense laser affects the proton spectrum, with analytical models and Vlasov simulations. A low relative proton density gives rise to peaks in the energy spectrum. Furthermore, a target with the protons confined to a thin, low density layer produces a quasimonoenergetic spectrum. This is a simple technique for producing proton beams with a narrow energy spread for proton radiography of laser-plasma interactions.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.96.035005