Abstract
This paper addresses the experimental results and analysis of the time-resolved and time-integrated of AXUV (absolute extreme ultraviolet) photodiode diagnostics. These results are obtained by the measurement of EUV and soft X-ray (SX) power radiation of plasma-produced under the interaction of laser pulse (intensity ∼5 × 1011 W/cm2, pulse durations in the range of 10−30 ns and wavelength 1064 nm) with one steel-316 target. The EUV and SX signals with the three specific peaks are detected by AXUV photodiode. From the analysis of time resolved of the AXUV signal, it is inferred that the first signal peak can dominantly be related to the free-free transition mechanism of radiation and also the latter related to the free-band and bond-bond transitions respectively. The energy of EUV and SX pulse emission is observed to be approximately linear, proportional to the laser pulse energy. The time integrated results show that, the average energy conversion efficiency is determined to be about 3.7 %.
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