Beta/Gamma Detectors

Model	Application	Detector Type	Area active/ open	Window	Efficiency	Background
44-6	exposure measurements	GM		30-45 mg/cm²stainless steel wall, housing: 1000 mg/cm²	closed 17%-⁶⁰Co, 0.35%-¹³⁷Cs open 19%-⁶⁰Co, 0.50%-¹³⁷Cs	closed 20 cpm open 25 cpm
44-38	dose rate measurements	GM, energy compensated		tin shields with aluminum, & solid aluminum		closed 20 cpm open 25 cpm
44-92	contamination survey	sealed gas proportional, xenon	169 cm²/ 140 cm²	6 mg/cm² titanium	10%-¹⁴C 13%-⁹⁹Tc 24%-³⁶Cl 26%-⁹⁰Sr/⁹⁰Y 3%-¹²⁹I 1.6%-⁵⁷Co 1.2%-⁵⁵Fe 10%-²³⁹Pu	700 cpm
44-110	tritium surface contamination	gas flow, P-10	126 cm²/ 100 cm²	windowless	25%-³H	400 cpm
44-21	low energy beta-gamma	1 in. dia x 1 mm thick NaI(Tl) adhered to a 0.001 in. thick plastic scintillator	5.1 cm²/ 5.1 cm²	3.4 mg/cm²	19%-¹²⁹I 5%-¹⁴C 28%-³²P 38% for ¹²⁵I	450 cpm
44-98	surveying, sample counting	1 in. dia x 1 mm thick BGO	5 cm²/ 5 cm²	1.2 mg/cm²	3%-¹⁴C 8%-¹²⁹I, 15%-¹²⁵I	650 cpm
44-172	beta & low energy gamma	1 in. dia x 1 mm thick YSO	5 cm²/ 5 cm²	1.2 mg/cm²	25%-¹²⁹I 8%-¹⁴C 7%-⁵⁵Fe 2.5%-¹³⁷Cs 11.7%-²⁴¹Am 7.4%-⁵⁷Co	300 cpm

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