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J Radiat Prot > Volume 35(2);2010 > Article
Journal of Radiation Protection 2010;35(2):85.
$^{23}Na$(p, $gamma$)$^{24}Mg$$^{27}Al$(p, $gamma$)$^{28}Si$반응을 이용한 HPGe 검출기의 응답함수
Response Function of HPGe Detector using $^{23}Na$(p, $gamma$)$^{24}Mg$ and $^{27}Al$(p, $gamma$)$^{28}Si$ Reaction
Park, Sang-Tae;
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 $gamma$-ray energy resolution could be improved. The $gamma$-ray spectrum was measured at $55^{circ}$ to the direction of the incident proton beam. Reaction spectrum was obtained from the $^{23}Na$(p, $gamma$)$^{24}Mg$ reaction at $E_p$ = 1424 keV and $^{27}Al$(p, $gamma$)$^{28}Si$ reaction at $E_p$ = 992 keV. To accelerate the incident proton which creates the (p, $gamma$) 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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