5 February 1992 Photoionization of an He-like aluminum plasma by a laser-produced x-ray source
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Abstract
We present preliminary experiments and calculations performed to optimize the photoionization of an He-like aluminum plasma. The high emissivity of the 3d-4f M-band of tantalum or tungsten is used as the pump. The plasmas are produced by two 500 ps duration beams of a frequency doubled Nd-glass laser. The pump beam is delayed by 1 ns with respect to the main beam. The Al plasma ionization state has been measured with K-alpha absorption measurements. X-ray diodes and space-resolving crystal spectrographs have been used to measure the intensity of the pump source in the desired spectral range. Optimization of the pumping scheme is analyzed with a numerical description of the photopumping process by a collisional-radiative modeling of the Al plasma including the X-ray pump.
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Claude J. Chenais-Popovics, Claude J. Chenais-Popovics, Christina A. Back, Christina A. Back, P. Renaudin, P. Renaudin, Jean-Paul Geindre, Jean-Paul Geindre, Jean-Claude J. Gauthier, Jean-Claude J. Gauthier, } "Photoionization of an He-like aluminum plasma by a laser-produced x-ray source", Proc. SPIE 1551, Ultrashort Wavelength Lasers, (5 February 1992); doi: 10.1117/12.134830; https://doi.org/10.1117/12.134830
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