Abstract: Disclosed herein are devices, systems, and methods for tritium gas detection. For example, disclosed herein are proportional counter-gas ionization devices for tritium gas detection, the devices comprising a fluid cell comprising a wall defining a chamber, a cathode, an anode, and a hydrogen sorption layer. The hydrogen sorption layer comprises a metal that forms a metal hydride when hydrogen is absorbed and/or adsorbed. The hydrogen sorption layer coals the wall within the chamber. When the hydrogen sorption layer is heated after absorbing and/or adsorbing hydrogen, the metal hydride is configured to release the absorbed and/or adsorbed hydrogen into the chamber. When the cathode and the anode are conductively coupled to a voltage source, the voltage source is configured to apply a voltage to the cathode and the anode to thereby operate the device as a proportional counter-gas ionization device for tritium gas detection.

Abstract: Disclosed herein are tritium detection devices and methods of making and use thereof. For example, disclosed herein are tritium detection devices comprising: a tritium detection region comprising a tritium absorption layer and an anti-diffusion layer; a Schottky contact region comprising a Schottky contact layer; a semiconductor layer, the semiconductor layer being a layer comprising a semiconductor; an epitaxial semiconductor layer, the epitaxial semiconductor layer being an epitaxial layer of the semiconductor; and an Ohmic contact layer.

Abstract: Disclosed herein are tritium detection devices and methods of making and use thereof. For example, disclosed herein are tritium detection devices comprising: a tritium detection region comprising a tritium absorption layer and an anti-diffusion layer; a Schottky contact region comprising a Schottky contact layer; a semiconductor layer, the semiconductor layer being a layer comprising a semiconductor; an epitaxial semiconductor layer, the epitaxial semiconductor layer being an epitaxial layer of the semiconductor; and an Ohmic contact layer.

Abstract: A multi-pixel x-ray source is provided. The x-ray source includes a plurality of transmission target assemblies. The transmission target assembly includes a tungsten target and a diamond substrate. The substrate includes a first transmission surface and a second transmission surface opposite first transmission surface. The substrate further includes a first side surface and a second side surface disposed between the first and second transmission surfaces. The target covers the first transmission surface of the substrate. The transmission target assembly further includes a base. The base surrounds the first and second side surfaces of substrate, exposing a collimator surface of the second transmission surface and the target. The transmission target assembly is configured to transmit x-ray generated by the target through the target and the substrate.

Abstract: A multi-pixel x-ray source is provided. The x-ray source includes a plurality of transmission target assemblies. The transmission target assembly includes a tungsten target and a diamond substrate. The substrate includes a first transmission surface and a second transmission surface opposite first transmission surface. The substrate further includes a first side surface and a second side surface disposed between the first and second transmission surfaces. The target covers the first transmission surface of the substrate. The transmission target assembly further includes a base. The base surrounds the first and second side surfaces of substrate, exposing a collimator surface of the second transmission surface and the target. The transmission target assembly is configured to transmit x-ray generated by the target through the target and the substrate.

Abstract: A multi-pixel x-ray source is provided. The x-ray source includes a plurality of transmission target assemblies. The transmission target assembly includes a tungsten target and a diamond substrate. The substrate includes a first transmission surface and a second transmission surface opposite first transmission surface. The substrate further includes a first side surface and a second side surface disposed between the first and second transmission surfaces. The target covers the first transmission surface of the substrate. The transmission target assembly further includes a base. The base surrounds the first and second side surfaces of substrate, exposing a collimator surface of the second transmission surface and the target. The transmission target assembly is configured to transmit x-ray generated by the target through the target and the substrate.