Temperature Errors in Plasma Diagnostics and Their Possible Effects on Absolute Transition Probabilities
A number of errors may occur in plasma diagnostics. Some of these errors are insidious, interact with one another, and tend to be self-perpetuating, their effects even being amplified in certain later applications. Self-absorption, lack of local thermodynamic equilibrium, systematic error of intensity measurement with respect to wavelength, incorrect absolute transition probabilities, and plasma temperature errors are among the commonest offenders. These have become inextricably intertwined with one another and frozen into the largest and most used compendium of what is probably the most crucial plasma diagnostic parameter, the absolute transition probability or f-value. We refer, in particular, to the Corliss and Bozman N.B.S. Monograph 53 of 1962, which gives some 25,000 experimental transition probabilities for 112 neutral and singly ionized species of 70 elements; also, to subsequent lists by Corliss and collaborators.
KeywordsShock Tube Atomic Beam Radiative Lifetime Temperature Error Plasma Diagnostics
Unable to display preview. Download preview PDF.
- Aller, L. H. (1965), The Abundance of Elements in the Solar Atmosphere, in Kopal, Z., Ed., Advances in Astronomy and Astrophysics, Vol, 3, Academic Press, N. Y.Google Scholar
- Corliss, C. H. (1970) Private communication.Google Scholar
- Corliss, C. H., and Bozman, W. R. (1962), Experimental Transition Probabilities for Spectral Lines of Seventy Elements, N.B.S. Monograph 53, U. S. Government Printing Office, Washington, D.C.Google Scholar
- Corliss, C. H., and Tech, J. L. (1968), N.B.S. Monograph 108, U. S. Government Printing Office, Washington 25, D.C.Google Scholar
- Corliss, C. H., and Tech, J. L. (1970), private communication (to Commission 14, Fundamental Spectroscopy, of the International Astronomical Union).Google Scholar
- Grevesse, N. (1969), Unpublished Ph.D. Thesis, University of Liege, Belgium.Google Scholar
- Klose, J. Z. 1970 (in preparation).Google Scholar
- Meggers, W. F., Corliss, C. H., and Scribner, B. F. (1961), Tables of Spectral Line Intensities, N.B.S. Monograph 32, U. S. Government Printing Office, Washington 25, D.C.Google Scholar
- Whaling, W., Martinez-Garcia, M., Mickey, D. L., and Lawrence, G. M., (1970), private communication (to be published in the Proceedings of the Second International Conference on Beam-Foil Spectroscopy, Lysekil, Sweden, June 7–12, 1970).Google Scholar
- Wilkerson, T. (1961), Unpublished Ph.D. Thesis, University of Michigan, Ann Arbor, Michigan.Google Scholar
- Wolnik, S. J. (1966), Unpublished.Google Scholar
- Wolnik, S. J., Berthel, R. O., and Wares, G. W. (1970), Shock Tube Measurements of Absolute Fe I gf-Values (To be published in Astrophys. J., 162, 1970 (Dec).Google Scholar