Plasma panel based ionizing radiation detector

摘要

A radiation detector is formed from a plasma panel that includes a front substrate, and a back substrate that forms a generally parallel gap with the front substrate. X (column) and Y (row) electrodes are coupled by gas discharge events to define one or more pixels. Impedances are coupled to the X and Y electrodes, and a power supply is coupled to one or both types of electrodes. Discharge event detectors are coupled to the impedances.

主权项

1. A position-sensitive ionizing-radiation counting detector, wherein an amount of detected radiation is based on a total count of individual events, the detector comprising:
a first substrate; a second substrate generally parallel to said first substrate and forming a gap with said first substrate; a gas contained within said gap, wherein said gas comprises a gas mixture; at least one first electrode coupled to said second substrate; at least one second electrode electrically coupled to said first electrode; a first impedance coupled to said first electrode; a power supply coupled to at least one of said electrodes; a first discharge event detector coupled to at least one of said electrodes for detecting a gas discharge counting event in said electrode; a plurality of pixels defined by said electrodes, each pixel capable of outputting a gas discharge counting event pulse upon interaction with ionizing-radiation, wherein each gas discharge pulse is counted as having an approximately equal value; and circuitry for detecting if a gas discharge counting event pulse is output from the pixels, and for counting each gas discharge pulse as an individual event.