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Spectrum Techniques, LLC
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  5. Spectrum - Model GM35 - End-Window GM ...

Spectrum - Model GM35 -End-Window GM Detector

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The GM35, end-window, Geiger-Mueller detector will detect alpha, beta, and gamma, and x-ray radiation (or combinations thereof).

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The GM35, end-window, Geiger-Mueller detector will detect alpha, beta, and gamma, and x-ray radiation (or combinations thereof). The thin mica window is protected by a thin steel screen that can be removed. The GM35 detector operates at the manufacturer recommended 900 V.

Cable not included.

  • Maximium Starting Voltage : 850 volts
  • Recommended Operating Voltage : 900 volts
  • Operating Voltage : 850-1000 volts
  • Maximum Dead Time : 150 µs
  • Maximum Plateau Slope : 10% / 100 volts
  • Minimum Anode Resistor : 1 MΩ
  • Recommended Anode Resistor : 3.3 MΩ
  • Gamma Sensitivity Cs-137 : 40 cps per mR/hr
  • Tube Capacitance : 5 pF
  • Nominal Active Length: 2.25 inches (57.2 mm)
  • Window Material: Mica
  • Window Thickness: 1.8 to 2.2 mg/cm2
  • Active Diameter: 1.13 inches (28.7 mm)
  • Cathode Material: Cr – Fe
  • Cathode Wall Thickness: 0.06 inches (1.52 mm)
  • Operating Temperature Range: -20 to 50°C
  • Fill Gas: Ne/Ar + Halogen
  • Type of Connector: BNC
  • Approximate Weight: 150 grams
  • Maximum Altitude: 8000 ft