MICROCAVITY PLASMA PANEL RADIATION DETECTOR

摘要

A position-sensitive ionizing-radiation counting detector includes a first substrate and a second substrate, and a defined gas gap between the first substrate and the second substrate. The first and second substrates comprise dielectrics and a discharge gas is contained between the first and second substrate. A microcavity structure comprising microcavities is coupled to the second substrate. An anode electrode is coupled to the first substrate and a cathode electrode is coupled to the microcavity structure on the second substrate. The detector further includes pixels defined by a microcavity and an anode electrode coupled to a cathode electrode, and a resistor coupled to each of the cathode electrodes. Each pixel may output a gas discharge counting event pulse upon interaction with ionizing-radiation. The detector further includes a voltage bus coupled to each of the resistors and a power supply coupled to at least one of the electrodes.

主权项

1. A position-sensitive ionizing-radiation counting detector comprising:
a first substrate; a second substrate coupled to the first substrate and defining a gas gap between the first substrate and the second substrate, wherein the first and second substrates comprise dielectrics; a discharge gas contained between the first and second substrate; at least one microcavity coupled to the second substrate; at least one anode electrode coupled to the first substrate; at least one cathode electrode coupled to the microcavity on the second substrate; a plurality of pixels, wherein each pixel is defined by a microcavity and an anode electrode coupled to a cathode electrode and each pixel is capable of generating a gas discharge counting event pulse upon interaction with ionizing-radiation; a resistor coupled to each of the cathode electrodes; a voltage bus coupled to each of the resistors; a power supply coupled to at least one of the electrodes; a discharge event detector coupled to at least one of the electrodes for detecting a gas discharge counting event in the electrode; circuitry for detecting if a gas discharge counting event pulse is output from the pixels, and for counting each such gas discharge pulse as an individual event and having an approximately equal value; wherein an amount of detected radiation is based on a total count of individual events.