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Angular dependence of M and N band radiation and the effect of angular anisotropy on the total conversion efficiency of X rays emitted from a laser irradiated gold foil

Published online by Cambridge University Press:  09 March 2009

N.K. Gupta  and
V. Kumar
N.K. Gupta
Affiliation:
Theoretical Physics Division, Fifth Floor, Central Complex, Bhabha Atomic Research Center, Bombay-400 085, India
V. Kumar
Affiliation:
Theoretical Physics Division, Fifth Floor, Central Complex, Bhabha Atomic Research Center, Bombay-400 085, India
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Abstract

In this paper, we present the results of our theoretical studies on the angular dependence of M and N band peaks emitted from a laser irradiated gold foil. The M band peak is seen to be nearly isotropic, while the magnitude of the N band peak decreases as we move away from normal to the foil. The trend is similar to that reported in the experiments of Chase et al.: (1977) for aluminium foil. It is also observed that the N band peak shifts towards longer wavelength as the angle φ relative to the normal to the target increases. We also present the effect of angular anisotropy on time and frequency integrated total conversion efficiency of laser light into X rays using a high Z target. As compared with the diffusion approximation, a significant reduction in conversion efficiency is observed for a wide range of laser powers, and wavelengths.

Type
Research Article
Information
Laser and Particle Beams , Volume 13 , Issue 3 , September 1995 , pp. 389 - 402
Copyright
Copyright © Cambridge University Press 1995

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References

REFERENCES

Chaker, M. et al. 1988 J. Appl. Phys. 63, 892.CrossRefGoogle Scholar
Chase, L.F. et al. 1977 Appl. Phys. Lett. 30, 137.CrossRefGoogle Scholar
Christiansen, J.P. et al. 1974 Computer Phys. Commun. 7, 271.Google Scholar
Eidmann, K. 1994 Laser Part. Beams 12, 223.CrossRefGoogle Scholar
Eidmann, K. et al. 1990 Phys. Fluids B2, 208.CrossRefGoogle Scholar
Elizer, S. et al. 1992 Phys. Lett. A166, 249.CrossRefGoogle Scholar
Goldstone, P.D. et al. 1987 Phys. Rev. Lett. 59, 56.CrossRefGoogle Scholar
Gus'kov, S.Yu. & Kolanowski, M. 1992 J. Soviet Laser Research 13, 390.CrossRefGoogle Scholar
Mead, W.C. et al. 1988 Phys. Rev. A38, 5275.Google Scholar
Mochizuki, T. et al. 1986 Phys. Rev. A33, 525.CrossRefGoogle Scholar
More, R.M. 1985 Adv. Atom. Molec. Physics 21, 305.Google Scholar
Mostacci, D. et al. 1989 Phys. Fluids B1, 2106.CrossRefGoogle Scholar
Murakami, M. & Meyer-Ter-Vehn, J. 1991a Nuclear Fusion 31, 1315.CrossRefGoogle Scholar
Murakami, M. & Meyer-Ter-Vehn, J. 1991b Nuclear Fusion 31, 1333.Google Scholar
Naik, P.A. et al. 1994 IEEE Trans. Plasma Science 22, 53.Google Scholar
Pomraning, G.C. 1973 The Equations of Radiation Hydrodynamics (Pergamon Press, Oxford).Google Scholar
Popil, R. et al. 1987 Phys. Rev. A35, 3874.CrossRefGoogle Scholar
Press, W.H. et al. 1992 Numerical Recipes in FORTRAN, The Art of Scientific Computing, 2nd edition (Cambridge University Press, Cambridge, UK).Google Scholar
Ramis, R. et al. 1988 Computer Phys. Commun. 49, 475.CrossRefGoogle Scholar
Richtmyer, R.D. & Morton, K.W. 1967 Difference Methods for Initial Value Problems, 2nd edition (John Willey, New York).Google Scholar
Sakabe, S. et al. 1988 Phys. Rev. A38, 5756.CrossRefGoogle Scholar
Sigel, R. et al. 1988 Phys. Rev. A38, 5779.Google Scholar
Sigel, R. et al. 1990 Phys. Fluids B2, 199.CrossRefGoogle Scholar
Sigel, R. et al. 1992 Phys. Rev. A45, 3987.CrossRefGoogle Scholar
Skinner, C.H. 1991 Phys. Fluids B3, 2420.CrossRefGoogle Scholar
Suckewer, S. & Skinner, C.H. 1990 Science 247, 1553.Google Scholar
Tsakiris, G.D. & Sigel, R. 1988 Phys. Rev. A38, 5769.CrossRefGoogle Scholar
Tsakiris, G.D. et al. 1990 Rev. Sci. Instrum. 16, 2813.Google Scholar
Zeng, G.M. et al. 1992 J. Appl. Phys. 72, 3355.CrossRefGoogle Scholar
Zel-Dovich, Ya.B. & Raizer, Yu.P. 1966 Physics of Shock Waves and High-Temperature Hydro-dynamic Phenomena (Academic Press, New York).Google Scholar