New method of proportional counter feedback biasing for wide-range radiation dose-rate monitors

Conference · Sun Jan 01 00:00:00 EST 1984

OSTI ID:6315550

Kopp, M K; Valentine, K H; Guerrant, G C; Manning, F W

A prototypic wide-range radiation dose-rate monitor for civil defense applications has been developed and tested. The specified dose-rate range (0 to 500 R/h) was displayed on a single readout scale by using feedback-controlled biasing of a proportional counter. This new method is based on controlling the avalanche multiplication factor (gas gain) of the counter by varying its bias voltage in response to its measured output current (i.e., detected dose rate). The counter output current varies between 0 and 1.5 nA in a quasi-logarithmic response to dose rates between 0 and 500 R/h. The corresponding values of gas gain and bias voltage range from 1 to 300 and 200 to 1900 V respectively.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6315550
• Report Number(s): CONF-841007-19; ON: DE85002595
• Resource Relation: Conference: Nuclear science symposium, Orlando, FL, USA, 31 Oct 1984
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DOSE RATEMETERS
PROPORTIONAL COUNTERS
FEEDBACK
AMPLIFIERS
GAIN
AMPLIFICATION
ELECTRONIC EQUIPMENT
EQUIPMENT
MEASURING INSTRUMENTS
RADIATION DETECTORS
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments
440102 - Radiation Instrumentation- Radiation Dosemeters