| Numéro |
J. Phys. IV France
Volume 11, Numéro PR2, Juillet 2001
X-Ray Lasers 2000
|
|
|---|---|---|
| Page(s) | Pr2-59 - Pr2-66 | |
| DOI | https://doi.org/10.1051/jp4:2001211 | |
J. Phys. IV France 11 (2001) Pr2-59-Pr2-66
DOI: 10.1051/jp4:2001211
Short pulse pumped X-ray lasers
G.J. Tallents1, F. Strati1, J.Y. Lin2, R. Smith3, S.J. Pestehe1, G.J. Pert1, C.L.S. Lewis4, A.G. MacPhee1 and R. Keenan11 Department of Physics, University of York, York YO10 5DD, U.K.
2 Department of Physics, National Chung Cheng University, Ghia-Yi 621, Taiwan, R.O.C.
3 LSAI, Université Paris-Sud, bâtiment 350, 91405 Orsay, France
4 School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, U.K.
Abstract
Double laser pulses of duration [MATH] and short laser pulses [MATH] superimposed on longer duration background pulses have been shown to efficiently pump lasing in Ne-like and Ni-like ions. For the 75 ps pumping, X-ray laser output without travelling wave pumping is shown to be well-described by a model of ASE output. With 1 ps pumping, the X-ray laser output with different velocity travelling wave pumping is well-fitted with an extension to the ASE model allowing for travelling wave excitation of the gain along the plasma line. The model is used to investigate the production of short ([MATH]) x-ray laser pulses and the effects of non-ideal travelling wave velocities on the X-ray laser output. Resonance line spectra of emission perpendicular to the plasma line are measured and simulated. It is shown that an accurate opacity model for the more intense Ne-like ions is needed to correctly simulate the spectra.
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