Model ASP-2A Alpha Scintillation Probe, 2 inch

Model ASP-2A Alpha Scintillation Probe, 2 inch

The Johnson Model ASP-2A probe is a Zinc Sulphide scintillation detector for alpha survey (alpha only). This alpha scinitllation probe is ideal for americium, thorium & plutonium. It may be used with the GSM-115 survey meter, GSM-500 auto-ranging survey meter, GSM-525 dual probe survey meter, RML-200 ratemeter and others.

Zinc Sulphide Alpha Detector
Durable housing
Detects alpha radiation only
Works with most Johnson survey meters

ASP-2A Alpha Scintillation Probe Specifications

COMPATIBILITY: All Johnson Survey meters, GSM-115, GSM-500, GSM-525,
OPERATING VOLTAGE: 700 - 900 vdc
WINDOW THICKNESS: 0.4 mg/cm²
EFFICIENCY: Americium 40% + 2PI
BACKGROUND: 0 cpm
ENERGY RESPONSE: 3 MeV-10 MeV alpha
SENSITIVE AREA: 2"
FINISH: Polyurethane coated aluminum
DIMENSIONS: 2-1/2" dia. X 12" long
WEIGHT: 30 ounces
ENVIRONMENTAL: Stable from -40ºC to 75ºC, 5% - 95% RH non-condensing

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