Abstract
We investigate from a theoretical point of view the basic possibilities for the effect of ionizing radiation on the X-ray gain in recombining laser-produced plasmas, in particular with regard to recently performed experiments in which targets consisting of two different-material layers (double-layer targets) were used. We discuss an increase of the gain for the 3 → 2 transition in hydrogenic ions which is due to photoionization causing, mainly, a decrease of the Lyman-α reabsorption and an increase of the population of higher levels. In our numerical simulations we consider single-material and double-layer targets, concentrating particularly on carbon and titanium. We obtain and discuss the time behaviour of the X-ray emission from the laser-produced plasma with regard to its application as pump radiation.
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References
D.L. Matthews et al.: Phys. Rev. Lett. 54, 110 (1985)
P. Jaeglé, A. Carillon, A. Klisnick, G. Jamelot, H. Guennou, A. Sureau: Europhys. Lett. 1, 555 (1986)
M.H. Key et al.: J. Phys. (Paris) Colloq. 6, 71 (1986)
W. Brunner, Th. Schlegel: Laser and Particle Beams 6, 277 (1988)
W. Brunner, R.W. John, Th. Schlegel: In Laser interaction with matter, ed. by G. Velarde, E. Mínguez, J.M. Perlado (World Scientific, Singapore 1989) pp. 149–152
D.G. Goodwin, E.E. Fill: J. Appl. Phys. 64, 1005 (1988)
E.E. Fill: Laser und Optoelektronik 20, 52 (1988)
E.E. Fill: Private communication
Ya.B. Zeldovich, Yu.P. Raizer: Physics of Shock Waves and High-Temperature Hydrodynamic Phenomena, Vol. 1 (Academic, New York 1966) pp. 406–408
W. Brunner, R.W. John: Laser and Particle Beams (submitted 1989); see also: 2nd European Conference on Quantum Electronics EQEC '89, Dresden. Abstracts, ed. by K. Junge, W. Brunner, H. Paul. Part II: Posters. No. 2.6
W. Brunner, R.W. John, H. Paul, H. Steudel: Laser and Particle Beams 6, 723 (1988)