Abstract: Scintillation compositions comprising one or more different types of quantum dots dispersed in a polymer matrix material, the quantum dots having a core-shell structure, and optionally a neutron-capturing isotope. Hydrogels comprising the quantum dots and optional neutron-capturing isotope in a polymerized matrix are also disclosed, as are related detection systems and methods.

Abstract: The present disclosure describes aspects of a machine-learned (ML) spectrum analysis configured to distinguish between a plurality of radioisotope types and/or a plurality of emission levels of respective radioisotope types within spectrum data. The ML spectrum analyzer may utilize an artificial neural network (ANN) having an output layer configured to produce prediction data for respective labels, each label corresponding to a respective radioisotope. The prediction data may be configured to quantify an amount of each respective radioisotope within a subject of the spectrum.

Abstract: This application relates generally to improving energy resolution of measured energy data. One or more embodiments includes a method including obtaining first energy data representative of amounts of energy measured at a first number of energy levels. The method may also include generating second energy data based on the first energy data. The second energy data may be representative of amounts of energy at a second number of energy levels. The second energy data may exhibit a higher energy resolution than the first energy data. Related devices, systems and methods are also disclosed.

Abstract: A xenon capture system that reduces the concentration of xenon in a carrier gas is disclosed. An example xenon capture system includes a carrier gas with a first concentration of xenon that flows through an intake into a chamber. Within the chamber is a reaction area that has at least one peripheral sidewall. The reaction area operates at a predetermined temperature, flow rate, and low pressure. Within the reaction area is at least one xenon capture mechanism that is at least partially formed of a transition metal. When the carrier gas is exposed to the xenon capture mechanism, the xenon capture mechanism adsorbs xenon from the carrier gas. The carrier gas, with a second concentration of xenon, exits the chamber through the exhaust outlet.

Abstract: Scintillation compositions comprising a gadolinium compound and a scintillation compound in a polymer matrix precursor. The scintillation compound comprises strontium diiodide, fac-tris(2-phenylpyridine)iridium (Ir(ppy)3), a quinine compound, or combinations thereof, or 2-(4-biphenylyl)-5 phenyl-1,3,4-oxadiazole (PBD), 2-(4-tert-butylphenyl)-5-(4-phenylphenyl)-1,3,4-oxadiazole (b-PBD), 2,5-diphenyl oxazole (PPO), 1,4-bis(5-phenyloxazol-2-yl) benzene (POPOP), or combinations thereof. Hydrogels comprising the gadolinium compound and scintillation compound in a polymer matrix are also disclosed, as are related systems and methods.

Abstract: A xenon capture system that reduces the concentration of xenon in a carrier gas is disclosed. An example xenon capture system includes a carrier gas with a first concentration of xenon that flows through an intake into a chamber. Within the chamber is a reaction area that has at least one peripheral sidewall. The reaction area operates at a predetermined temperature, flow rate, and low pressure. Within the reaction area is at least one xenon capture mechanism that is at least partially formed of a transition metal. When the carrier gas is exposed to the xenon capture mechanism, the xenon capture mechanism adsorbs xenon from the carrier gas. The carrier gas, with a second concentration of xenon, exits the chamber through the exhaust outlet.

Abstract: Scintillation compositions comprising a gadolinium coordination compound and a scintillation compound in a polymer matrix material. The scintillation compound comprises strontium diiodide, fac-tris(2-phenylpyridine)iridium (Ir(ppy)3), a quinine compound, or combinations thereof, or 2-(4-biphenylyl)-5 phenyl-1,3,4-oxadiazole (PBD), 2-(4-tert-butylphenyl)-5-(4-phenylphenyl)-1,3,4-oxadiazole (b-PBD), 2,5-diphenyl oxazole (PPO), 1,4-bis(5-phenyloxazol-2-yl) benzene (POPOP), or combinations thereof. Hydrogels comprising the gadolinium coordination compound and scintillation compound in a polymer matrix are also disclosed, as are related systems and methods.