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KMID : 0364920100350020085
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Journal of Radiation Protection and Research
2010 Volume.35 No. 2 p.85 ~ p.90
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Response Function of HPGe Detector using 23Na(p, γ)24Mg and 27Al(p, γ)28Si Reaction
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Park Sang-Tae
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Abstract
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In the present work, peak relative efficiency for the energy was obtained and response function was worked out. This study was carried out using the high resolution high efficiency HPGe detector(diameter 78.7 mm, length 86.5 mm) and NaI(Tl) detector for anti-compton. The anti-coincidence of the signals from the two detectors could be used to lessen the Compton effect signal; thus, the γ-ray energy resolution could be improved. The γ-ray spectrum was measured at 55° to the direction of the incident proton beam. Reaction spectrum was obtained from the 23Na(p, γ)24Mg reaction at Ep = 1424 keV and 27Al(p, γ)28Si reaction at Ep = 992 keV. To accelerate the incident proton which creates the (p, γ) capture reaction, the 3 MeV Pelletron accelerator at the Tokyo Institute of Technology was used. Response function was worked out by a noble technique. We worked out a response function from 1.2 to 9.4 MeV at intervals of 0.75 MeV.
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KEYWORD
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HPGe Detector, Nuclear Reaction, Pelletron Accelerator, Response Function
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