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Observation of ultrafast nonequilibrium collective dynamics in warm dense hydrogen.

Abstract:

We investigate ultrafast (fs) electron dynamics in a liquid hydrogen sample, isochorically and volumetrically heated to a moderately coupled plasma state. Thomson scattering measurements using 91.8 eV photons from the free-electron laser in Hamburg (FLASH at DESY) show that the hydrogen plasma has been driven to a nonthermal state with an electron temperature of 13 eV and an ion temperature below 0.1 eV, while the free-electron density is 2.8x10{20} cm{-3}. For dense plasmas, our experimental...

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Publication status:
Published

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Journal:
Physical review letters
Volume:
104
Issue:
12
Pages:
125002
Publication date:
2010-03-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:1bdac135-83e1-41a1-83ab-dbb74c7a9db1
Source identifiers:
53342
Local pid:
pubs:53342
Language:
English

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