Purpose and characteristic
Low background alpha/beta counter is a precision instrument measuring low alpha, beta radioactivity. Can be used in the
water, Soil, food, building materials, ores, aerosols, etc of the alpha, beta radioactivity measurement; Radiation protection
and environmental protection in the alpha/beta radioactive inspection measurement; As well as scientific research,medical treatment, biological, agricultural radioactive measurement.
The instrument for the series of products, a variety of specifications:
Ø RC114S single-channel low background α / β detector
Ø RC114D Dual Low background α / β detector
Ø RC114Q Quad Low background α / β detector
RC114 series detector performance is stable, compact design, the use of easy to operate. In order to large area thin window flow
Gas type proportional counter as detector, using specially designed shielding counter anticoincidence with counter measurement, in order to reduce the surrounding environment radiation interference on the measurement.
With the selected "old lead" thick shielding external radiation chamber. Therefore, the equipment is high detection sensitivity, low background. Good energy response,low-energy 14 c beta source detection efficiency of 40% or higher. Similar is superior to the semiconductor, the scintillator detector.
RC114 series detector adopts computer control operation, do not set the switch knob to detect counter plateau characteristic, set the working point counter, instrumentation background count rate on its own, and in the detection of the sample to deduct the background (count), the results are correct. Combined with standard source, can be self calibration instrument detection efficiency. Automatic processing test results. Samples can be directly measured the radioactivity specific activity of Bq/L Bq/Kg or Bq/cm3,etc.
Main performance

•  background count rate：
  α≤0.0017 cpm﹒cm²
  β≤0.028 cpm﹒cm²
  
• detection efficiency (2 PI)
  α sources： 241Am ≥ 80%
  β sources： 90Sr-90Y ≥ 50%
                    14C ≥ 40%
  
• influence quantity：α to β < 1% 210Po sources
                              β to α < 0.1% 90Sr-90Y sources
  
• Power：≤ 0.25 KW
  
• Volume: Host 560 × 475 × 270 mm（CLB-104）
  
• Weight：Host ≤ 600Kg（CLB-104）