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Bright multi-keV harmonic generation from relativistically oscillating plasma surfaces

Abstract:

The first evidence of x-ray harmonic radiation extending to 3.3, 3.8 keV (order n>3200) from petawatt class laser-solid interactions is presented, exhibiting relativistic limit efficiency scaling (η∼n-2.5-n-3) at multi-keV energies. This scaling holds up to a maximum order, nRO∼81/2γ3, where γ is the relativistic Lorentz factor, above which the first evidence of an intensity dependent efficiency rollover is observed. The coherent nature of the generated harmonics is demonstrated by the hig...

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Authors


Carroll, DC More by this author
Clarke, RJ More by this author
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Journal:
Physical Review Letters
Volume:
99
Issue:
8
Publication date:
2007-08-25
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:0771a131-5db6-4778-bb45-5902de0cc9de
Source identifiers:
353748
Local pid:
pubs:353748
Language:
English

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