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X-Ray Diagnostics of Laser Produced Plasmas Using CaF2 (Dy) Thermoluminescent Dosimeters

  • F. J. Mayer (a1), G. R. Montry (a1) and E. Benn (a1)

Abstract

The use of CaF2 (Dy) thermoluminescent dosimeters to diagnose the X-radiation from 1.06 μ laser-produced plasmas is described. The TLD's have been used in various cassettes to measure total X-ray yield and the X-ray continuum out to ∼100 kev. Described are experiments pertaining to maintenance and recovery of TLD soft X-ray response, their linearity, insensitivity to 1.06 μ laser light, and energy calibration. Also, described are the TLD attenuation experiments in the “soft” and “hard” components of the laser plasma X-ray spectrum.

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1.Harshaw Chemical Company, 6801 Cochran Road, Solon, Ohio, TLD-200 Technical Literature.
2. Mayer, F. J. and Charatis, G., “X-Ray Filtration Measurements of Laser-Produced Thermoluminescent Dosimeters,” KMS Fusion, Inc., Report #KMSF-U116, (1973).
3.Fe55 Source - 5.9Kev, supplied by Isotope Products, Inc., 404 South Lake Street, Burbank, California. Other sources used Pu238 - 14.5 kev and Po210 - 1.5 kev.
4.Private communication with Zmora, H., university of Rochester, and K. Amlauer at Isotope Products, Inc.,
5. Bekefi, G., “Radiation Processes in Plasmas” p. 93, John Wiley and Sons, Inc., (1966).
6.Members of Group L-4, ‘Recent Experiments in Laser Fusion”, Los Alamos Scientific Laboratory, Report #LA-UR-74-85, (1974).

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