Alpha Detector The Ludlum Model 43-1 is a large area scintillation detector for alpha radiation survey and wipe test analysis. Specifications Part Number: 47-1516 INDICATED USE: alpha survey SUGGESTED INSTRUMENTS: general purpose survey meters, ratemeters, and scalers DETECTOR TYPE: scintillator, ZnS (Ag) PHOTOMULTIPLIER TUBE: 3.8 cm (1.5 in.) diameter, magnetically shielded DETECTOR OPERATING VOLTAGE: typically 500 to 1200 volts WINDOW: 1.2 mg/cm² metalized polyester (1.3 mg/cm² recommended for outdoor use) WINDOW AREA: 83 cm² active; 75 cm² open DETECTOR UNIFORMITY: within 10% of average reading EFFICIENCY (4π): ALPHA: 33% for 239Pu BACKGROUND: 3 cpm or less CONNECTOR: series “C”, others available CONSTRUCTION: aluminum housing with beige powder coat SIZE: 12.2 x 24.9 cm (4.8 x 9.8 in.) (Dia x L) WEIGHT: 0.9 kg (2 lb) Model 180-16 Wide Diameter Sample Holder Option: Model 180-16 Wide Diameter Sample Holder provides repeatable geometry for counting wipes, filter paper, or slides, up to 10.2 cm (4 in.) diameter. Sample trap offers selectable spacings of 0.32, 0.64, 1.3, 2.5, and 5.1 cm (0.125, 0.25, 0.5, 1.0, and 2 in.) Part Number 47-1132 Ludlum Measurements, Inc. P.O. Box 810, Sweetwater, Texas 79556 Web: http://www.ludlums.com Tel: 800-622-0828 / 325-235-5494 / Fax: 325-235-4672 / Email: [email protected] Note: specifications subject to change without notification. We are not responsible for errors or omissions. Two views to show the large window and the yellow to indicate the radiation type detected - in this case, yellow for alpha.