DIGE differential cross section data for oxygen isotopic analysis

Evaluation the nonlinear response function of a HPGe detector for 59 keV to 10.7 MeV gamma-rays using a Monte Carlo simulation and comparison with experimental data

“…The simulated model was evaluated by measuring the spectra of gamma-rays emitted from proton capture reactions and standard calibration sources. The calibration sources were 137 Cs, 241 Am, 60 Co, 152 Eu, and 133 Ba while the 27 Al(p,𝛾) 28 Si and 23 Na(p,𝛾) 24 Mg reactions were used for proton induced prompt gamma-rays. According to the results presented in figure 2, a second order polynomial can be used to describe the experimental energy resolution with acceptable accuracy.…”

“…The detailed description of the PIGE beam-line and the experimental setup are given in refs. [24,25].…”

“…The absolute efficiency measurements for the high-energy region were performed using the gamma-ray cascades following the 27 Al(p,𝛾) 28 Si and 23 Na(p,𝛾) 24 Mg proton capture reactions, whose resonant energies (Er) and widths (Γ) are listed in table 2. Table 2 also presents the emitted gamma-ray cascades [27], the intensity ratios [28,29], and the properties of the targets employed in this work.…”

“…In this work, these parameters were calculated by the least square method. The obtained parameters with an R-square (R-square is the square of the correlation coefficient between the observed outcomes and the observed predictor values) of 0.9980 along with their 1𝜎 errors are: To compare the experimental and simulated efficiencies, the gamma-rays spectra of calibration sources as well as 27 Al(p,𝛾) 28 Si and 23 Na(p, 𝛾) 24 Mg reactions were measured by the HPGe semiconductor detector and simulated using Geant4. As an example case, the complex measured and simulated spectra emitted by 28 Si compound nucleus originated by the 27 Al(p,𝛾) 28 Si reaction at the 992 keV resonance energy are shown in figures 3(a) and 3(b), respectively.…”

“…In this work, we used both the gamma-rays of calibration sources and prompt gamma-rays emitted in proton capture reactions to model a coaxial p-type HPGe detector using Geant4 Monte Carlo simulation for the gamma-ray energy range of 59-10764 keV. The calibration sources were 137 Cs, 241 Am, 60 Co, 152 Eu, and 133 Ba, while the prompt gamma-rays were due to the gamma-ray cascades following the 27 Al(p,𝛾) 28 Si reaction capture at the resonant energies of 992, 1317 and 2483 keV, as well as the 23 Na(p,𝛾) 24 Mg reaction capture at the resonant energies of 1417 and 1395 keV. According to the results obtained, the presented simulated and experimental spectra show a good agreement.…”