New determinations of gamma-ray line intensities of the E p = 550 keV and E p = 1747 keV resonances of the 13 C ( p , γ ) 14 N reaction
semanticscholar(2003)
摘要
Gamma-ray angular distributions for the resonances at Ep = 550 keV and 1747 keV of the radiative capture reaction C(p,γ)N have been measured, using intense proton beams on isotopically pure C targets. Experimental gamma-ray spectra were obtained with three HP-Germanium detectors at four angles for Ep = 550 keV and six angles for Ep = 1747 keV in the range of 0 to 90 with respect to the proton beam. From the data, relative intensities for the strongest transitions were extracted with an accuracy of typically five percent, making these resonances new useful gamma-ray standards for efficiency calibration in the energy range from Eγ = 1.6 to 9 MeV. Gamma-ray branching ratios were obtained for several levels of N and are compared with literature values.
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