FEATURES
- EXCELLENT ALPHADETECTION
 - ZERO BACKGROUND
 - RUGGED METAL HOUSING
 
This is an excellent ALPHA detector with ZERO BACKGROUND in gamma fields, up to 1 R/hr. A low-density Mylar window of 0.7 mg/cm2 enables the high-efficiency detection of alpha down to 3 MeV. The Crystal and PMT are mounted in a shock resistant metal housing.
| SPECS | ASP-2 | 
| General Use | Alpha Contamination Surveying and Sample Counting | 
| Detector Type | ZnS(Ag) Scintillator | 
| CPM Range | 0-999.9 Kcpm or Kcps | 
| Window | 0.7 mg/cm2Mylar, protected by a Copper screen (80% open) | 
| Window Area | Active – 15.5 cm2 (2.4 in2) Open – 12.3 cm2 (1.9 in2)  | 
| Efficiency(4π) | Pu239 – 20%, Th230 – 20% | 
| Energy Response | 3 MeV – 7 MeV | 
| Operating Voltage | 700 – 1100 vdc | 
| Normal Background | <.1 cpm | 
| Environmental | -20°F[-28°C] to 140°F[60°C] 5-95% RH | 
| Connector | BNC (other types available) | 
| Dimensions | 2.5″ (6.25cm) Dia x 10″ (25cm) L | 
| Weight | 30 oz (0.85 kg) |