A novel method for determining the M-band fraction in laser-driven gold hohlraums

Li, Yongsheng; Huo, Wen Yi; Lan, Ke
February 2011
Physics of Plasmas;Feb2011, Vol. 18 Issue 2, p022701
Academic Journal
A novel method is proposed for determining the M-band (2-4 keV) fraction in laser-driven gold (Au) hohlraums, based on our study on the responses of x-ray ablative shock waves to Au M-band radiation flux in aluminum (Al) and titanium (Ti). Due to their different opacity properties, the velocity of shock wave in Al decreases as the M-band fraction, while increases in Ti. The scaling relation of radiation temperature with shock velocity and M-band fraction is given for Al and Ti materials. Our method provides a complementary means in determining the M-band fraction in a hohlraum.


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