| Literature DB >> 18518385 |
V A Smalyuk1, D Shvarts, R Betti, J A Delettrez, D H Edgell, V Yu Glebov, V N Goncharov, R L McCrory, D D Meyerhofer, P B Radha, S P Regan, T C Sangster, W Seka, S Skupsky, C Stoeckl, B Yaakobi, J A Frenje, C K Li, R D Petrasso, F H Séguin.
Abstract
The compression of direct-drive, spherical implosions is studied using cryogenic D2 targets on the 60-beam, 351-nm OMEGA laser with intensities ranging from approximately 3x10(14) to approximately 1x10(15) W/cm2. The hard-x-ray signal from hot electrons generated by laser-plasma instabilities increases with laser intensity, while the areal density decreases. Mitigating hot-electron production, by reducing the laser intensity to approximately 3x10(14) W/cm2, results in areal density of the order of approximately 140 mg/cm2, in good agreement with 1D simulations. These results will be considered in future direct-drive-ignition designs.Entities:
Year: 2008 PMID： 18518385 DOI： 10.1103/PhysRevLett.100.185005
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161