Complete Gamma Ray Spectrometer
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GAMMA-RAD with a laptop computer - a complete > Natural background > 3 133 Ba industrial isotopeLantern mantle (with thorium)Natural uranium oxide > Energy Counts (keV)0 500 1000 1500 2000 2500 3000 Measured G -ray spectra of naturally occurring radioactive materials (NORM), an industrial isotope, compared to natural background with no sources present. > 14 DeAngelo Drive, Bedford, MA 01730-2204 U.S.A. Tel: +1 (781) 275-2242 Fax: +1 (781) 275-3470 e-mail: sales@amptek.com >

Ruggedized DetectorModule DP4 Digital Pulse Processor USB NaI(Tl)Scintillator Digital PulseProcessing(FPGA) SpectrumMemory(MCA) PMT ADC Micro-controller Charge Amptlifier Analog Prefilter Computer Ethernet Auxiliary I/O HighVoltageBias Supply Low VoltagePower Supply +5V DC Supply Computer than a full pulse width, specically by 1.25 times the peaking time. Pulse processing electronics have a cycle time of 1 The detector is a ruggedized scintillator and PMT. The 76 x 76 mm NaI(Tl) is considered standard, but many dierent congu-rations are possible. Contact Amptek for details.The detector...

Multi-Element Spectrum > 133 Ba 0.356 MeV Background > 137 137 Cs Cs 0.662 MeV > 133 Ba > 238 U 1.006 MeV UO > 3 40 K 1.46 MeV > Counts 208 Tl 2615 keV(from > 232 Th decay) > 0 500 1000 1500 2000 2500 3000 1.0E+051.0E+041.0E+031.0E+021.0E+01 1.0E+00 Energy (keV) 137 Cs Spectrum > 60 Co Spectrum 662 keV42 keV (6.4%)1.17 MeV4.8% FWHM 31 keV6.4 keV FWHM81 keV356 keV 1.33 MeV2.5 MeVsum peak > Counts Counts 0 200 400 600 800 1000 0 500 1000 1500 2000 2500 3000 Energy (keV) Energy (keV) 133 Ba Spectrum Natural UO > 3 Spectrum > Counts Counts 0 200 400 600 800 1000 0 500 1000 1500 2000 2500 3000...