A radiation detector can include a logic element configured to determine an adjusted value for light emission of a luminescent material. A method of using the radiation detector can include determining an adjusted value of a luminescent material. The adjustment can be based on an inverse correlation between decay times corresponding to signal pulses and values of light emissions corresponding to the signal pulses. In an embodiment, the logic element may be further configured to obtain a measured value of a decay time and a measured value for the light emission, and determining an adjusted value for the light emission can be based on the measured value of the decay time and measured value for the light emission.

A radiation detector can include a logic element configured to determine an adjusted value for light emission of a luminescent material. A method of using the radiation detector can include determining an adjusted value of a luminescent material. The adjustment can be based on an inverse correlation between decay times corresponding to signal pulses and values of light emissions corresponding to the signal pulses. In an embodiment, the logic element may be further configured to obtain a measured value of a decay time and a measured value for the light emission, and determining an adjusted value for the light emission can be based on the measured value of the decay time and measured value for the light emission.

A radiation sensing material is disclosed. The radiation sensing material is represented by the following formula (I):

(M1.sub.8-2aM2.sub.a)(M.sub.14-(4b/3)M.sub.b)O.sub.24(X.sub.2-dcdX.sub.n.sup.c?):M formula (I)

Further is disclosed a device and uses of the radiation sensing material represented by the formula (I).

An implantable dosimeter uses salt crystals such as NaCl or KCl, or other materials that vary in color as a function of incident, ionizing radiation. The color change of the salts may occur through the creation of F-centers, where electrons become trapped in crystal defects (e.g., halide vacancies) and absorb light at certain wavelengths. Vacancies in the salt crystals absorb photons at precise wavelengths. Thus, the change in color can be correlated to the integrated dose in an implantation site. The salt crystals may be optically coupled to optical fibers or the like for remote measurement of color using, e.g., a spectrometer and a computer system. In this manner, the dosage of ionizing radiation can be measured in vivo with a fault tolerant, passively integrating dosimeter.

An implantable dosimeter uses salt crystals such as NaCl or KCl, or other materials that vary in color as a function of incident, ionizing radiation. The color change of the salts may occur through the creation of F-centers, where electrons become trapped in crystal defects (e.g., halide vacancies) and absorb light at certain wavelengths. Vacancies in the salt crystals absorb photons at precise wavelengths. Thus, the change in color can be correlated to the integrated dose in an implantation site. The salt crystals may be optically coupled to optical fibers or the like for remote measurement of color using, e.g., a spectrometer and a computer system. In this manner, the dosage of ionizing radiation can be measured in vivo with a fault tolerant, passively integrating dosimeter.

Radiation-sensitive material embedded in a disposable radiochemistry device gives the device the additional capability of recording radiation dose, for readout at a later time. There is provided a device comprising means for the introduction of a precursor compound, means for the introduction of a radionuclide, a reaction vessel for reacting said precursor compound and said suitable source of a radionuclide to obtain a radiolabelled compound, and one or more pieces of radiation-sensitive material embedded into said device wherein at least one of said pieces is positioned to be exposed to radioactivity associated with said radiolabelled compound.

Radiation-sensitive material embedded in a disposable radiochemistry device gives the device the additional capability of recording radiation dose, for readout at a later time. There is provided a device comprising means for the introduction of a precursor compound, means for the introduction of a radionuclide, a reaction vessel for reacting said precursor compound and said suitable source of a radionuclide to obtain a radiolabelled compound, and one or more pieces of radiation-sensitive material embedded into said device wherein at least one of said pieces is positioned to be exposed to radioactivity associated with said radiolabelled compound.

A dosimeter for recording a level of radiation exposure, and a reader for measuring the level of radiation recorded by the dosimeter, are disclosed. In some embodiments the dosimeter comprises at least one luminescent bead coupled to a fibre. The reader comprises a means for holding the dosimeter, stimulating means for stimulating a region of the dosimeter to cause luminescence, and a light detector for measuring intensity of light produced by the at least one bead during heating. In some embodiments the reader can be configured to record readings from a dosimeter comprising a fibre without beads. A system comprising the dosimeter and reader is disclosed. Methods of using the dosimeter, reader and system are also disclosed.

A radiation-detecting device including at least two radiation detectors distributed in series along a support cable, each detector including an optically stimulated luminescence detection element which is optically coupled to at least one optical fiber, each optically stimulated luminescence detection element being held opposite a first end of the optical fiber by a mechanical part fixed to the support cable, the mechanical part being held in a flexible cable by a holding mechanism, second ends of each optical fiber leading to the same first end of the flexible cable.

The present invention relates to a metal-organic hybrid lattice material and the application in the detection of radiation sources. In the invention, a water-soluble thorium salt and 2,2:6,2-terpyridine-4-carboxylic acid are subjected to a solvothermal reaction in water and an organic mixed solvent to obtain a metal-organic hybrid lattice material. The crystalline material produces radiation-induced discoloration and photoluminescence change under ultraviolet light, X-ray, ?-ray, ?-ray, and so on. The material is useful for qualitative and quantitative detection and calibration after high-dose irradiation. Compared with the traditional radiation-induced color change indicator labels, the material achieves the visual qualitative and quantitative detection and has strong radiation stability, high reuse rate, wide detection range, and good linear relationship, to solve the problem of traditional materials relying on professional optical equipment to quantify the radiation dose.