J. Phys. IV France
Volume 133, June 2006
Page(s) 445 - 447
Publié en ligne 16 juin 2006
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 445-447

DOI: 10.1051/jp4:2006133091

Comparison of simulation to absolute X-ray emission of CH plasma created with the Nike laser

M. Busquet1, J.L. Weaver2, D.G. Colombant2, A.N. Mostovych2, U. Feldman1, M. Klapisch1, J.F. Seely3 and G. Holland4

1  ARTEP, Inc., Ellicott City, Maryland 21042, USA (contractor to NRL)
2  Plasma Physics Division, Naval Research Laboratory, Washington, DC 203752, USA
3  Space Science Division, Naval Research Laboratory, Washington, DC 2037, USA
4  SFA, Inc., Landover, Maryland 20785, USA (contractor to NRL)

The Nike laser group at the Naval Research Laboratory has an ongoing effort to improve and benchmark the radiation hydrodynamic simulations used to develop pellet designs for inertial confinement fusion. A new postprocessor, Virtual Spectro, has been added to the FAST code suite for detailed simulation of non-LTE spectra, including radiation transport effects and Stark line profile. This new combination enhances our ability to predict the absolute emission of soft x-rays. An absolutely calibrated transmission grating spectrometer and a high resolution grazing incidence spectrometer have been used to collect time integrated and time resolved spectra emitted by CH targets irradiated at laser intensities of $\sim10\,{\rm TW/cm}^2$. Comparison between these observations and simulations using Virtual Spectro demonstrates excellent agreement (within factor of $\sim1.5$) for the absolute emission.

© EDP Sciences 2006