Alpha/Beta/Gamma Detectors

Alpha/Beta/Gamma Detectors

Model	Application	Detector Type	Area (Active/ Open)	Window	Efficiency	Background	Sensitivity
44-7	survey, sample counting	GM end window	6 cm²/ 5 cm²	1.7 ± 0.3 mg/cm² mica	2%–¹⁴C, 10%–⁹⁰Sr/⁹⁰Y, 7%–⁹⁹Tc, 7%–²³⁹Pu	40 cpm	2100 cpm/mR/hr
44-9 44-9-18	survey, sample counting	GM pancake	15 cm²/ 12 cm²	1.7 ‡ 0.3 mg/cm² mica	5%-¹⁴C, 22%-⁹⁰Sr/⁹⁰Y, 19%-⁹⁹Tc, 32%-³²P, 15%-²³⁹Pu	60 cpm	3300 cpm/mR/hr
44-40	survey, sample counting	GM pancake	15 cm²/ 12 cm²	1.7 ‡ 0.3 mg/cm² mica	5%-¹⁴C, 22%-⁹⁰Sr/⁹⁰Y, 19%-⁹⁹Tc, 32%-³²P, 15%-²³⁹Pu	25 cpm	3300 cpm/mR/hr
44-88	survey, sample counting	GM pancake with lead housing	15 cm²/ 12 cm²	1.7 ‡ 0.3 mg/cm² mica	5%-¹⁴C, 22%-⁹⁰Sr/⁹⁰Y, 19%-⁹⁹Tc, 32%-³²P, 15%-²³⁹Pu	60 cpm	3300 cpm/mR/hr

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