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Title: Proportional counter radiation camera

Abstract

A gas-filled proportional counter camera that images photon emitting sources is described. A two-dimensional, positionsensitive proportional multiwire counter is provided as the detector. The counter consists of a high- voltage anode screen sandwiched between orthogonally disposed planar arrays of multiple parallel strung, resistively coupled cathode wires. Two terminals from each of the cathode arrays are connected to separate timing circuitry to obtain separate X and Y coordinate signal values from pulse shape measurements to define the position of an event within the counter arrays which may be recorded by various means for data display. The counter is further provided with a linear drift field which effectively enlarges the active gas volume of the counter and constrains the recoil electrons produced from ionizing radiation entering the counter to drift perpendicularly toward the planar detection arrays. A collimator is interposed between a subject to be imaged and the counter to transmit only the radiation from the subject which has a perpendicular trajectory with respect to the planar cathode arrays of the detector. (Official Gazette)

Inventors:
;
Issue Date:
OSTI Identifier:
4339271
Patent Number(s):
3786270
Assignee:
to United States Atomic Energy Commission
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
NSA Number:
NSA-29-026889
Resource Type:
Patent
Resource Relation:
Patent File Date: 1973 Feb 01; Other Information: G01t1/18. Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English
Subject:
N46110* -Instrumentation-Radiation Detection Instruments- General Detectors & Monitors; *GAMMA CAMERAS- DESIGN; *MULTIWIRE PROPORTIONAL CHAMBERS- DESIGN

Citation Formats

Borkowski, C J, and Kopp, M K. Proportional counter radiation camera. United States: N. p., 1974. Web.
Borkowski, C J, & Kopp, M K. Proportional counter radiation camera. United States.
Borkowski, C J, and Kopp, M K. Tue . "Proportional counter radiation camera". United States.
@article{osti_4339271,
title = {Proportional counter radiation camera},
author = {Borkowski, C J and Kopp, M K},
abstractNote = {A gas-filled proportional counter camera that images photon emitting sources is described. A two-dimensional, positionsensitive proportional multiwire counter is provided as the detector. The counter consists of a high- voltage anode screen sandwiched between orthogonally disposed planar arrays of multiple parallel strung, resistively coupled cathode wires. Two terminals from each of the cathode arrays are connected to separate timing circuitry to obtain separate X and Y coordinate signal values from pulse shape measurements to define the position of an event within the counter arrays which may be recorded by various means for data display. The counter is further provided with a linear drift field which effectively enlarges the active gas volume of the counter and constrains the recoil electrons produced from ionizing radiation entering the counter to drift perpendicularly toward the planar detection arrays. A collimator is interposed between a subject to be imaged and the counter to transmit only the radiation from the subject which has a perpendicular trajectory with respect to the planar cathode arrays of the detector. (Official Gazette)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1974},
month = {1}
}