초록 ▼

A design and readout of a xenon detection medium based device, which provides improved spectroscopic performance compared to currently commercially available devices. To achieve energy resolution improvement, a method to accurately measure radial spatial position for interacting events within a HPXe

A design and readout of a xenon detection medium based device, which provides improved spectroscopic performance compared to currently commercially available devices. To achieve energy resolution improvement, a method to accurately measure radial spatial position for interacting events within a HPXe cylindrical detector is described using the plan as shown in FIG. 4. This is accomplished by utilization of light generated both at the gamma interaction site and at the collection point near the anode wire of the cylindrical detector. These light flashes are detected by a VUV photon detector. Light transmission is facilitated by incorporating a vacuum ultraviolet (VUV) light transparent window at least one end of the cylindrical ionization detector. With the known electron drift velocity in HPXe, the time between these two photopulses is sufficient to accurately determine the radial coordinate. Consequently, correction by electronic means for the electrostatic pulse dispersion using the expression graphed in FIG. 2 can be achieved in order to approach the true intrinsic energy resolution limit for HPXe.

대표청구항 ▼

1. A cylindrical ionization detector for detecting radiation, comprising; (1) a cylindrical central anode electrode, (2) a surrounding pressure containing cylindrical conducting electrode, (3) a pressure sealing end plug at one end of the cylinder capable of containing xenon gas at a density in the

1. A cylindrical ionization detector for detecting radiation, comprising; (1) a cylindrical central anode electrode, (2) a surrounding pressure containing cylindrical conducting electrode, (3) a pressure sealing end plug at one end of the cylinder capable of containing xenon gas at a density in the range 0.1-0.6 g/cm3 and having an electrical connection means for conducting signal charge from the central electrode to a charge sensitive amplifier, (4) a VUV transparent pressure containing end window at one end of the cylindrical ionization detector facilitating transmission of xenon fluorescence photons at 173 nm from an interior position of the cylindrical ionization detector to a VUV photon detector.