In:
Physics of Plasmas, AIP Publishing, Vol. 23, No. 1 ( 2016-01-01)
Kurzfassung:
Efficient multi-keV x-ray sources can be produced using nanosecond laser pulse-heated middle-Z underdense plasmas generated using gas or foam. Previous experimental results show that an optimal initial target density exists for efficient multi-keV x-ray emission at which the laser ionization wave is supersonic. Here we explore the influence of the laser intensity and the pulse duration on this optimal initial target density via a one-dimensional radiation hydrodynamic simulation. The simulation shows that the optimal initial density is sensitive to both the laser intensity and the pulse duration. However, the speed of the supersonic ionization wave at the end of the laser irradiation is always maintained at 1.5 to 1.7 times that of the ion acoustic wave under the optimal initial density conditions.
Materialart:
Online-Ressource
ISSN:
1070-664X
,
1089-7674
Sprache:
Englisch
Verlag:
AIP Publishing
Publikationsdatum:
2016
ZDB Id:
1472746-8
