期刊
PHYSICAL REVIEW LETTERS
卷 106, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.085003
关键词
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资金
- NIF operations/laser team
- U.S. DOE by LANL [DE-AC52-06NA25396]
- LLNL [DE-AC5 2-07NA27344]
- SNL [DE-AC04-94AL85000]
The first soft x-ray radiation flux measurements from hohlraums using both a 96 and a 192 beam configuration at the National Ignition Facility have shown high x-ray conversion efficiencies of similar to 85%-90%. These experiments employed gold vacuum hohlraums, 6.4 mm long and 3.55 mm in diameter, heated with laser energies between 150-635 kJ. The hohlraums reached radiation temperatures of up to 340 eV. These hohlraums for the first time reached coronal plasma conditions sufficient for two-electron processes and coronal heat conduction to be important for determining the radiation drive.
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