23 November 1999 Characterization and optimization of a laser-produced x-ray source with a gas puff target
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Abstract
Soft x-ray emission from plasmas produced using a laser- irradiated gas puff target have been investigated. The use of the gas puff targets, created by pulsed injection of high- density gas from a solenoid valve through a nozzle, eliminates the production of debris associated with solid targets. To improve the gas puff target two approaches have been used: (1) cooling of the valve with liquid nitrogen to increase condensation of gas and (2) formation of the target by injection of gas in gas surrounding the nozzle output using the double nozzle setup. The gas puff targets created with these two approaches were characterized with x-ray backlighting method using laser-produced x-ray source. Laser pulses of 1 ns time duration with energy up to 10 J from a Nd:glass laser and of either 0.9 ns or 10 ns time duration with energies up to 0.7 J from a Nd:YAG laser were used to produce plasmas. Emissions in the soft x-ray range from laser- produced gas puff plasmas were studied for various gases. Significant improvement of x-ray production from the double stream gas puff target has been observed.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Henryk Fiedorowicz, Henryk Fiedorowicz, Andrzej Bartnik, Andrzej Bartnik, Roman Jarocki, Roman Jarocki, Rafal Rakowski, Rafal Rakowski, Miroslaw Szczurek, Miroslaw Szczurek, Hiroyuki Daido, Hiroyuki Daido, Noriyuki Sakaya, Noriyuki Sakaya, Masayuki Suzuki, Masayuki Suzuki, Hideo Nagatomo, Hideo Nagatomo, Huajing Tang, Huajing Tang, Il Woo Choi, Il Woo Choi, Yusuke Tohyama, Yusuke Tohyama, Susumu Yamagami, Susumu Yamagami, Takeyoshi Nakayama, Takeyoshi Nakayama, } "Characterization and optimization of a laser-produced x-ray source with a gas puff target", Proc. SPIE 3767, EUV, X-Ray, and Neutron Optics and Sources, (23 November 1999); doi: 10.1117/12.371110; https://doi.org/10.1117/12.371110
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