Device for noninvasively verifying thermoluminescent dosimeter card heater time temperature profile
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsLuis Benevides, Jeffrey Delzer
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Abstract
A non-invasive temperature verification system used in a TLD system, which comprises at least one thermal sensor, which is placed near each of TLD element, measuring its temperature during heating cycle. The signal data from each thermal sensor is converted to time temperature profile which is used to verify and calibrate the TLD system.
Claims9
) A thermoluminescence-based dosimetry system comprising:
- a) at least one thermoluminescent dosimetry (TLD) element operative to be heated controllably and to emit luminescence during the heating, the emitted luminescence correlated with a radiation dose to which the TLD element has been exposed;
- and
- b) a noninvasive temperature verification subsystem for real-time monitoring of temperature data of each TLD element during the heating, and for providing a time temperature profile of each TLD element.
2) The TLD system of claim 1, further comprising:
- a) a heating subsystem for providing a controllable heating rate of each TLD element;
- b) a thermoluminescence (TL) measuring subsystem for measuring the emitted luminescence, and for providing luminescence data;
- and
- c) a control subsystem for controlling heating parameters of the heating subsystem based on the heating rate and for providing at least one glow curve based on the luminescence data, the glow curve indicative of the radiation dose.
3) The TLD system of claim 1, wherein the noninvasive temperature verification subsystem includes at least one temperature detector.
7) A method for verifying time temperature profile of a thermoluminescence-based dosimetry system comprising the steps of:
- a) heating the thermoluminescence-based dosimetry system at a controlled heating rate;
- b) obtaining temperature data of each of TLD elements during heating using signal data collected from a thermal sensor placed near each of the TLD element;
- c) creating a time temperature profile of each TLD element using temperature readings of each TLD element;
- and
- d) comparing measured the time temperature profile to an expected time temperature profile.
Dependencies are inferred from the claim text.