OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 54, Iss. 4 — Apr. 1, 1964
  • pp: 464–465

Absorption Cross Sections of Argon and Methane between 600 and 170 Å

OM PRAKASH RUSTGI  »View Author Affiliations


JOSA, Vol. 54, Issue 4, pp. 464-465 (1964)
http://dx.doi.org/10.1364/JOSA.54.000464


View Full Text Article

Acrobat PDF (324 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Absorption cross sections of argon and methane have been determined in their respective ionization continua, with particular emphasis on the short-wavelength range from 600 to 170 Å. A line emission spectrum from a high-voltage condensed spark discharge in nitrogen was used as a light source, and a maximum value of the cross section for argon beyond the 2P½0 edge was measured to be 36.0× 10-18 cm2. The oscillator strength for the transition into the continuum has been obtained by integrating the experimental curve of cross sections versus wavenumber from the ionization limit of argon down to about 170 Å and was found to be ƒ= 5.5. Similarly, short-wavelength cross sections in methane were combined with earlier results at longer wavelengths, and a total ƒf 7.6 was obtained. A comparison with the theoretical ƒ values indicates the need of more refined calculations for the photo-ionization of argon and methane.

Citation
OM PRAKASH RUSTGI, "Absorption Cross Sections of Argon and Methane between 600 and 170 Å," J. Opt. Soc. Am. 54, 464-465 (1964)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-54-4-464


Sort:  Author  |  Journal  |  Reset

References

  1. G. L. Weissler, Handbuch der Physik, edited by S. Flügge (Springer-Verlag, Berlin, 1956), Vol. 21.
  2. K. Watanabe, Advan. Geophys. 5, 153 (1958).
  3. J. Quant. Spectry. Radiative Transfer 2, 375 (1962).
  4. H. Beutler, Z. Physik 93, 177 (1935).
  5. A. Pery-Thorne and W. R. S. Garton, Proc. Phys. Soc. (London) B76, 833 (1960).
  6. R. P. Madden and K. Codling, Phys. Rev. Letters 10, 516 (1963).
  7. P. Lee and G. L. Weissler, Phys. Rev. 99, 540 (1955).
  8. N. Wainfan, W. C. Walker, and G. L. Weissler, Phys. Rev. 99, 542 (1955).
  9. Y. Tanaka, R. E. Huffman, and J. C. Larrabee, J. Opt. Soc. Am. 51, 693 (1961); see also Ref. 3, above, and Appl. Opt. 2, 617 (1963).
  10. G. R. Cook and P. Metzger (unpublished).
  11. R. E. Huffman, Y. Tanaka, and J. C. Larrabee, J. Chem. Phys. 39, 902 (1963).
  12. J. A. R. Samson, Phys. Rev. 132, 2122 (1963).
  13. A. Dalgarno, Proc. Phys. Soc. (London) A65, 663 (1952).
  14. J. W. Cooper, Phys. Rev. 128, 681 (1962).
  15. P. G. Wilkinson and H. L. Johnston, J. Chem. Phys. 18, 190 (1950).
  16. G. Moe and A. B. F. Duncan, J. Am. Chem. Soc. 74, 3140 (1952).
  17. K. Watanabe, M. Zelikoff, and E. C. Y. Inn, AFCRC Tech. Rept. No. 53–23 Geophys. Res. Paper No. 21 (1953).
  18. R. W. Ditchburn, Proc. Roy. Soc. (London) A229, 44 (1955).
  19. H. Sun and G. L. Weissler, J. Chem. Phys. 23, 1160 (1955).
  20. G. R. Cook and P. Metzger, J. Chem. Phys. (to be published).
  21. H. A. Bethe and E. Salpeter, Ref. 1, Vol. 35.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited