System and method for radiochromic film calibration utilizing non-ionizing radiation
OwnerStrahinja Stojadinovic, Stevan Pecicinventors
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Abstract
A system and method for radiochromic film calibration utilizing non-ionizing radiation to achieve controlled and reproducible exposures without the need for ionizing radiation sources or specialized expertise. The system includes a non-ionizing photon source, such as LEDs or laser diodes, emitting ultraviolet or visible light, a mechanical shutter to control exposure duration, and a control unit regulating light emission and shutter operation. A variable optical element of a collimator can be used to shape and direct the light beam for uniform exposure. Precise calibration of the system is performed through a field radiometer for routine verification and periodic cross-validation with ionizing radiation sources.
Claims9
A system for calibrating radiochromic films, comprising:
- a light source configured to emit non-ionizing radiation as ultraviolet or visible light;
- a mechanical positioning system integrated with the light source configured to facilitate precise position and orientation adjustment of the light source;
- a mechanical shutter positioned to control the exposure of a radiochromic film to the light emitted by the light source;
- and
- a control unit operatively connected to the light source and the mechanical shutter, the control unit configured to regulate the emission of light from the light source and to control the operation of the mechanical shutter to achieve a predetermined exposure duration.
A method for calibrating radiochromic films, the method comprising the steps of:
- (A) positioning a radiochromic film in proximity to a light source;
- (B) emitting non-ionizing ultraviolet or visible light from the light source;
- (C) controlling the exposure of the radiochromic film to the emitted light using a mechanical shutter;
- and
- (D) regulating the emission of light from the light source and the operation of the mechanical shutter using a control unit to achieve a predetermined exposure duration.
Dependencies are inferred from the claim text.