Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-25T05:17:28.645Z Has data issue: false hasContentIssue false
  • English
  • Français

Plasma ion spectra from laser produced plasmas at λ = 1·06 μm and λ =0·53 μm

Published online by Cambridge University Press:  09 March 2009

R. Dinger ,
K. Rohr  and
H. Weber
H. Weber
Affiliation:
Universität Kaiserslautern, Fachbereich Physik, D-6750 Kaiserslautern, W.-Germany
Get access Rights & Permissions [Opens in a new window]

Abstract

Wavelength dependent absorption in laser-plasma interactions was investigated by measuring the energy spectra of freely expanding plasmas in their asymptotic stage of expansion. The experiments were performed with both 1·06- and 0·53-μm-wavelength light incident on flat tantalum targets. The experimental conditions were chosen adequately to ensure that inverse bremsstrahlung was the dominating absorption mechanism. As a result it is found that the absorption is enhanced at the shorter wavelength by a factor of 1·3. Primarily this leads to a higher ionisation state of the plasma and higher kinetic ion energies and temperatures, respectively, while the amount of ablated mass is approximately the same.

Type
Research Article
Information
Laser and Particle Beams , Volume 4 , Issue 2 , May 1986 , pp. 239 - 247
Copyright
Copyright © Cambridge University Press 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Amiranoff, F., Fabbro, R., Fabre, E., Garban, C., Virmont, J. & Weinfeld, M. 1979 Phys. Rev. Lett. 43, 522.CrossRefGoogle Scholar
Amiranoff, F., Fabbro, R., Fabre, E., Garban-Labaune, C. & Weinfeld, M. 1982 J. Physique, 43, 1037.CrossRefGoogle Scholar
Balmer, J. E. & Donaldson, T. P. 1977 Phys. Rev. Lett. 39, 1084.CrossRefGoogle Scholar
Dawson, J. M., Kaw, P. & Green, B. 1969 Phys. Fluids, 12, 875.CrossRefGoogle Scholar
Dinger, R., Rohr, K. & Weber, H. 1980 J. Phys. D: Appl. Phys. 13, 2301.CrossRefGoogle Scholar
Dinger, R., Rohr, K. & Weber, H. 1984 J. Phys. D: Appl. Phys. 17, 1707.CrossRefGoogle Scholar
Key, M. H., Toner, W. T., Goldsack, T. J., Kilkenny, J. D., Vents, S. A., Cunningham, P. F. & Lewis, C. L. S. 1983 Phys. Fluids, 26, 2011.CrossRefGoogle Scholar
Kunz, I. & Mulser, P. 1982 lAP-Report 103/82, T. H. Darmstadt.Google Scholar
Kunz, I. 1985 Proc. of 17th ECLIM.Rome.Google Scholar
Lewis, C. L. S., Cunningham, P. F., Pina, L., Roy, A. K. & Ward, J. M. 1982 J. Phys. D: Appl. Phys. 15, 69.CrossRefGoogle Scholar
Maaswinkel, A. G. M., Eidmann, K. & Sigel, R. 1979 Phys. Rev. Lett. 42, 1625.CrossRefGoogle Scholar
Nishimura, H., Matsuoka, R., Yagi, M., Yamada, K., Nakui, S., McCall, G. H. & Yamanaka, C. 1983 Phys. Fluids, 26, 1688.CrossRefGoogle Scholar
Pearlman, J. S. 1977 Rev. Sci. Instrum. 48, 1064.CrossRefGoogle Scholar
Slater, D. C., Busch, Gar. E., Charatis, G., Johnson, R. R., Mayer, F. J., Schroeder, R. J., Simpson, J. D., Sullivan, D., Tarvin, J. A. & Thomas, C. E. 1981 Phys. Rev. Lett. 46, 1199.CrossRefGoogle Scholar