Ultra hard x rays from krypton clusters heated by intense laser fields

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Issac, R.C. and Vieux, G. and Ersfeld, B. and Brunetti, E. and Jamison, S.P. and Gallacher, J.G. and Clark, D. and Jaroszynski, D.A. (2004) Ultra hard x rays from krypton clusters heated by intense laser fields. Physics of Plasmas, 11 (7). pp. 3491-3496. ISSN 1070-664X (http://dx.doi.org/10.1063/1.1755222)

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Abstract

The interaction of ultrashort laser pulses with krypton clusters at intensity up to 1.3×1018 Wcm−2 has been investigated. Intense Kα and Kβ emission from krypton at 12.66 and 14.1 keV, respectively, has been observed using conventional solid state x-ray detectors. The measured x-ray spectra have broad bremsstrahlung continuum reaching to photon energies up to 45 keV, with evidence that approximately 10% of electrons that are heated to very high electron temperatures, which is consistent with a two-temperature electron distribution. This is ascribed to the presence of a hot electron population, similar to that found in laser-solid interactions. The highest laser energy to x-ray conversion efficiency observed is 9.2×10−7, which is equivalent to 45 nJ x-ray pulse energy from the 12.66 keV krypton Kα transition.

ORCID iDs

Issac, R.C., Vieux, G. ORCID logoORCID: https://orcid.org/0000-0003-4040-4117, Ersfeld, B. ORCID logoORCID: https://orcid.org/0000-0001-5597-9429, Brunetti, E. ORCID logoORCID: https://orcid.org/0000-0001-8302-9762, Jamison, S.P., Gallacher, J.G., Clark, D. and Jaroszynski, D.A. ORCID logoORCID: https://orcid.org/0000-0002-3006-5492;
  • Item type:Article
    ID code:17325
    Dates:
    Date
    Event
    July 2004
    Published
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Strathprints Administrator
    Date deposited:26 Apr 2010 13:00
    Last modified:11 Nov 2024 09:17
    URI:https://strathprints.strath.ac.uk/id/eprint/17325
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