US 7,002,163 B2 · Optically stimulated luminescence radiation dosimetry method to determine integrated doses and dose rates and a method to extend the upper limit of measureable absorbed radiation doses during irradiation

Abstract

There is provided herein a system and method for obtaining measurements of radiation exposure in real time using OSL and for obtaining improved accurate OSL measurements over a greater range of radiation exposures. In a preferred embodiment a signal-versus-dose response is obtained from an OSL dosimeter that is linear over all doses and does not exhibit saturation effects. The desired response is preferably calculated from the measured OSL-versus-time response from a suitable dosimeter obtained during irradiation. To obtain the desired response from the measured OSL data each measured OSL point has to be corrected for the depletion of the trapped electron concentration that occurs during each illumination period.

Claims18

Dependent claims

A method of determining a radiation dose parameter via OSL, comprising the steps of:

(a) selecting a sample;
(b) determining a luminescence correction factor for said sample;
(c) irradiating said sample;
(d) simultaneously with said irradiation, illuminating said sample for a period of time with light containing at least one predetermined light frequency;
(e) measuring a luminescence signal from said sample;
(f) correcting a value representative of said luminescence signal using at least said luminescence correction factor, thereby producing a corrected signal value;
and,
(g) estimating said radiation parameter from said corrected signal value.

5 more elements

Dependencies are inferred from the claim text.

Optically stimulated luminescence radiation dosimetry method to determine integrated doses and dose rates and a method to extend the upper limit of measureable absorbed radiation doses during irradiation

Life of this patent

Optically stimulated luminescence radiation dosimetry method to determine integrated doses and dose rates and a method to extend the upper limit of measureable absorbed radiation doses during irradiation

Life of this patent

Abstract

Claims18