Radiant energy – Luminophor irradiation – Methods
Patent
1996-09-20
1999-04-06
Glick, Edward J.
Radiant energy
Luminophor irradiation
Methods
2504845, G01T 1105, G01N 2164
Patent
active
058922342
ABSTRACT:
A bimodal method for determining an unknown absorbed dose of radiation. An irradiated material is illuminated with ultraviolet or visible light and the luminescence which is emitted from the material is detected. The illuminating light is pulsed, with pulse widths varying from 1 ns to 500 ms. The luminescence emission from dosimetric traps is monitored after a delay following the end of the illumination pulse. The integrated luminescence signal is related to the initial absorbed dose of radiation and thus may be used to calculate the unknown absorbed dose after calibration. In a first mode, the material is completely detrapped--that is, all the dosimetric traps are emptied by the illumination beam. In a second mode the number of illumination pulses, each being followed by the time delay and by periods during which the luminescence signal is detected, is selected such that only a portion of the radiation-induced luminescence from the material is extracted.
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Akselrod Mark S.
Markey Brian G.
McKeever Stephen W. S.
Glick Edward J.
The Board of Regents Of Oklahoma State University
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