Effect of plasma scale length on multi-MeV proton production by intense laser pulses

A.J. Mackinnon, Marco Borghesi, S. Hatchett, M.H. Key, P. Patel, D.H. Campbell, A. Schiavi, R. Snavely, S.C. Wilks, O. Willi

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Abstract

The influence of the plasma density scale length on the production of MeV protons from thin foil targets irradiated at I lambda (2) = 5 x 10(19) Wcm(-2) has been studied. With an unperturbed foil, protons with energy >20 MeV were formed in an exponential energy spectrum with a temperature of 2.5 +/- 0.3 MeV. When a plasma with a scale length of 100 mum was preformed on the back of the foil, the maximum proton energy was reduced to
Original languageEnglish
Pages (from-to)1769-1772
Number of pages4
JournalPhysical Review Letters
Volume86
Issue number9
Publication statusPublished - 26 Feb 2001

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Mackinnon, A. J., Borghesi, M., Hatchett, S., Key, M. H., Patel, P., Campbell, D. H., Schiavi, A., Snavely, R., Wilks, S. C., & Willi, O. (2001). Effect of plasma scale length on multi-MeV proton production by intense laser pulses. Physical Review Letters, 86(9), 1769-1772.