Abstract: To excite a fluorescence glass element to which radiation is applied with ultraviolet rays and to read a dose by a fluorescence intensity generated from a fluorescence detection surface of the fluorescence glass element, a method comprises a fluorescence intensity measurement step of using a two-dimensional camera as a detection unit which detects the fluorescence intensity from the fluorescence glass element and measuring the fluorescence intensity for each pixel division comprising one or a plurality of pixels set beforehand, a step of converting the fluorescence intensity measured for each pixel division into the dose, and a step of outputting the dose of each pixel division and a dose distribution.

Abstract: To excite a fluorescence glass element to which radiation is applied with ultraviolet rays and to read a dose by a fluorescence intensity generated from a fluorescence detection surface of the fluorescence glass element, a method comprises a fluorescence intensity measurement step of using a two-dimensional camera as a detection unit which detects the fluorescence intensity from the fluorescence glass element and measuring the fluorescence intensity for each pixel division comprising one or a plurality of pixels set beforehand, a step of converting the fluorescence intensity measured for each pixel division into the dose, and a step of outputting the dose of each pixel division and a dose distribution.

Abstract: A dose reading device comprises: an ultraviolet irradiating section 40 for irradiating an ultraviolet laser beam forming an excitation light source for fluorescent glass elements X; a fluorescence detecting section 50 for detecting a radiation exposure dose from the intensity of fluorescence generated by a fluorescent glass element X; a magazine conveying section 30 for conveying a magazine 10 capable of accommodating a plurality of fluorescent glass elements X to a position for measurement by the fluorescence detecting section 50; a dark box for accommodating the magazine conveying section 30 and the fluorescence detecting section 50; a first shielding plate 31c set at a non-perpendicular angle to the light axis of the ultraviolet laser beam having passed through the fluorescent glass element X; a second shielding plate 31e for shielding fluorescence from the fluorescent glass elements X other than the fluorescent glass element X under measurement; and first and second slit plates 41a, 42a for transmitting o

Abstract: A cylindrical silver-activated phosphate glass base material 2 is placed inside a heater 1. The upper end of this base material 2 is set in a supporting section 3, and an extending section 4 provided in vertically movable fashion by means of a drive device is attached to the lower end thereof. As the base material 2 is softened by the heating of the heater 1, and the extending section 4 is lowered by operating the drive device, the base material 2 is extended and assumes a thin bar shape. The extension rate of the extending section 4 driven by the drive device is controlled by an external diameter control section 5, while detecting the external diameter, in such a manner that the external diameter of the extended portion is uniform. The extended portion 6 of the base material 2 is cut to uniform lengths, and the cut faces thereof are polished by a polishing device, thereby yielding a cylindrical dosimeter glass element 7a.

Abstract: A cylindrical silver-activated phosphate glass base material 2 is placed inside a heater 1. The upper end of this base material 2 is set in a supporting section 3, and an extending section 4 provided in vertically movable fashion by means of a drive device is attached to the lower end thereof. As the base material 2 is softened by the heating of the heater 1, and the extending section 4 is lowered by operating the drive device, the base material 2 is extended and assumes a thin bar shape. The extension rate of the extending section 4 driven by the drive device is controlled by an external diameter control section 5, while detecting the external diameter, in such a manner that the external diameter of the extended portion is uniform. The extended portion 6 of the base material 2 is cut to uniform lengths, and the cut faces thereof are polished by a polishing device, thereby yielding a cylindrical dosimeter glass element 7a.

Abstract: A dose reading device comprises: an ultraviolet irradiating section 40 for irradiating an ultraviolet laser beam forming an excitation light source for fluorescent glass elements X; a fluorescence detecting section 50 for detecting a radiation exposure dose from the intensity of fluorescence generated by a fluorescent glass element X; a magazine conveying section 30 for conveying a magazine 10 capable of accommodating a plurality of fluorescent glass elements X to a position for measurement by the fluorescence detecting section 50; a dark box for accommodating the magazine conveying section 30 and the fluorescence detecting section 50; a first shielding plate 31c set at a non-perpendicular angle to the light axis of the ultraviolet laser beam having passed through the fluorescent glass element X; a second shielding plate 31e for shielding fluorescence from the fluorescent glass elements X other than the fluorescent glass element X under measurement; and first and second slit plates 41a, 42a for transmitting o

Abstract: A method and apparatus for reading a glass dosimeter in which a fluorescent glass element after exposure to ionizing radiation is subjected to ultraviolet light pulses so as to generate fluorescence pulses which are sampled in different sampling periods for determination of the exposure dose of the glass element by utilizing a fluorescent pulse component in a particular wavelength range. Preferably, concurrently an unexposed sample glass is subjected to the same UV light pulses and its fluorescence is subtracted from the exposure dose value in order in eliminate the base dose inherent to a particular glass for improved accuracy.