Fisk University Patent applications |
Patent application number | Title | Published |
20160041273 | HANDHELD DUAL THERMAL NEUTRON DETECTOR AND GAMMA-RAY SPECTROMETER - A combined thermal neutron detector and gamma-ray spectrometer system, including: a first detection medium including a lithium chalcopyrite crystal operable for detecting neutrons; a gamma ray shielding material disposed adjacent to the first detection medium; a second detection medium including one of a doped metal halide, an elpasolite, and a high Z semiconductor scintillator crystal operable for detecting gamma rays; a neutron shielding material disposed adjacent to the second detection medium; and a photodetector coupled to the second detection medium also operable for detecting the gamma rays; wherein the first detection medium and the second detection medium do not overlap in an orthogonal plane to a radiation flux. Optionally, the first detection medium includes a | 02-11-2016 |
20150378031 | VISIBLE SCINTILLATION PHOTODETECTOR DEVICE INCORPORATING CHALCOPYRITE SEMICONDUCTOR CRYSTALS - A photodetector device, including: a scintillator material operable for receiving incident radiation and emitting photons in response; a photodetector material coupled to the scintillator material operable for receiving the photons emitted by the scintillator material and generating a current in response, wherein the photodetector material includes a chalcopyrite semiconductor crystal; and a circuit coupled to the photodetector material operable for characterizing the incident radiation based on the current generated by the photodetector material. Optionally, the scintillator material includes a gamma scintillator material and the incident radiation received includes gamma rays. Optionally, the photodetector material is further operable for receiving thermal neutrons and generating a current in response. The circuit is further operable for characterizing the thermal neutrons based on the current generated by the photodetector material. | 12-31-2015 |
20150285924 | RECHARGEABLE SOLID STATE NEUTRON DETECTOR AND VISIBLE RADIATION INDICATOR - A radiation detection device, including: a support structure; and a chalcopyrite crystal coupled to the support structure; wherein, when the chalcopyrite crystal is exposed to radiation, a visible spectrum of the chalcopyrite crystal changes from an initial color to a modified color. The visible spectrum of the chalcopyrite crystal is changed back from the modified color to the initial color by annealing the chalcopyrite crystal at an elevated temperature below a melting point of the chalcopyrite crystal over time. The chalcopyrite crystal is optionally a | 10-08-2015 |
20140361221 | BARIUM IODIDE AND STRONTIUM IODIDE CRYSTALS AND SCINTILLATORS IMPLEMENTING THE SAME - In one embodiment, a crystal includes at least one metal halide; and an activator dopant comprising ytterbium. In another general embodiment, a scintillator optic includes: at least one metal halide doped with a plurality of activators, the plurality of activators comprising: a first activator comprising europium, and a second activator comprising ytterbium. In yet another general embodiment, a method for manufacturing a crystal suitable for use in a scintillator includes mixing one or more salts with a source of at least one dopant activator comprising ytterbium; heating the mixture above a melting point of the salt(s); and cooling the heated mixture to a temperature below the melting point of the salts. Additional materials, systems, and methods are presented. | 12-11-2014 |
20140209805 | BULK SEMICONDUCTING SCINTILLATOR DEVICE FOR RADIATION DETECTION - A bulk semiconducting scintillator device, including: a Li-containing semiconductor compound of general composition Li-III-VI | 07-31-2014 |
20140144373 | METHODS FOR SYNTHESIZING SEMICONDUCTOR QUALITY CHALCOPYRITE CRYSTALS FOR NONLINEAR OPTICAL AND RADIATION DETECTION APPLICATIONS AND THE LIKE - A method for synthesizing I-III-VI | 05-29-2014 |
20130193336 | MODIFICATION OF SOLID STATE CdZnTe (CZT) RADIATION DETECTORS WITH HIGH SENSITIVITY OR HIGH RESOLUTION OPERATION - An apparatus and process is provided to illustrate the manipulation of the internal electric field of CZT using multiple wavelength light illumination on the crystal surface at RT. The control of the internal electric field is shown through the polarization in the IR transmission image under illumination as a result of the Pockels effect. | 08-01-2013 |