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Optimization of double drive pulse pumping in Ne-like Ge x-ray lasers

Lin, J Y, Tallents, G J (orcid.org/0000-0002-1409-105X), Demir, A, Healy, S B and Pert, G J (1998) Optimization of double drive pulse pumping in Ne-like Ge x-ray lasers. Journal of Applied Physics. pp. 1863-1868. ISSN 0021-8979

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Pumping of the Ne-like Ge x-ray laser with two 100 ps duration pulses (a prepulse and main pulse) is investigated using a fluid and atomic physics code coupled to a 3D ray tracing postprocessor code. The modeling predicts the optimum ratio of the irradiance of the two pulses for the maximum x-ray laser output resulting from the balance between the relative lower electron density gradients and wider gain region which is produced with a larger prepulse and the higher peak gain coefficients produced with a small prepulse. With a longer pulse interval between prepulse and main pulse, a relatively lower optimum pulse ratio is found. The threshold irradiance of the main driving pulse with a prepulse required to make an order of magnitude enhancement of laser output compared to irradiation without a prepulse is also found at 3-4x10(13) W/cm(2) for Ne-like Ge. (C) 1998 American Institute of Physics.

Item Type: Article
Copyright, Publisher and Additional Information: © 1998 American Institute of Physics. Reproduced in accordance with the publisher's self-archiving policy.
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: Repository Assistant
Date Deposited: 20 Nov 2006
Last Modified: 23 Mar 2016 10:15
Published Version: http://dx.doi.org/10.1063/1.366910
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/1732

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