Journal Article PreJuSER-51647

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Enhanced hard x-ray emission from microdroplet preplasma

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2006
American Institute of Physics Melville, NY

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Abstract: We perform a comparative study of hard x-ray emission from femtosecond laser plasmas in 15 mu m methanol microdroplets and Perspex target. The hard x-ray yield from droplet plasmas is similar or equal to 68 times more than that obtained from solid plasmas at 2x10(15) W cm(-2). A 10 ns prepulse at about 5% of the main pulse appears to be essential for hard x-ray generation from droplets. Hot electron temperature of 36 keV is measured from the droplets at 8x10(14) W cm(-2), whereas a three times higher intensity is needed to obtain similar hot electron temperatures from Perspex plasmas. Particle-in-cell simulations with very long scale-length density profiles support experimental observations. (c) 2006 American Institute of Physics.

Keyword(s): J

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Note: Record converted from VDB: 12.11.2012

Contributing Institute(s):
  1. Zentralinstitut für Angewandte Mathematik (ZAM)
Research Program(s):
  1. Scientific Computing (P41)

Appears in the scientific report 2006
Notes: This version is available at the following Publisher URL: http://apl.aip.org
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 Record created 2012-11-13, last modified 2020-04-23


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