Proton Radiative Capture on 48Ti

DICEBOX;proton;gamma;strength functions;capture;49V;48Ti

McDevitt, Daniel Bruno ; Dr. G.E. Mitchell, Committee Co-Chair,John F. Shriner, Jr., Committee Co-Chair,D. Ronald Tilley, Committee Member,Mohamed A. Bourham, Committee Member,McDevitt, Daniel Bruno ; Dr. G.E. Mitchell ; Committee Co-Chair ; John F. Shriner ; Jr. ; Committee Co-Chair ; D. Ronald Tilley ; Committee Member ; Mohamed A. Bourham ; Committee Member

University:North Carolina State University

关键词: DICEBOX;    proton;    gamma;    strength functions;    capture;    49V;    48Ti;   

Others  :  https://repository.lib.ncsu.edu/bitstream/handle/1840.16/3951/etd.pdf?sequence=1&isAllowed=y

美国|英语

来源: null

【 摘 要 】

The 48Ti(p, gamma)49V reaction was studied in the energy rangeEp = 2.0--2.8MeV.This research was performed at the High Resolution Laboratory at Triangle Universities Nuclear Laboratory. Capture spectra were obtained for 27 compound nuclear resonances whose resonance parameters (energy, spin, parity, and particle widths) had been determined in earlier experiments.The gamma rays were measured with a Compton-suppressed HPGe detector.A total of ten 1/2+ resonances, nine 1/2- resonances and eight 3/2 - resonances were studied.The primary motivation for these measurements was to provide a data set suitable fortesting the applicability of conventional statistical modelsin this mass region.A secondary motivation was to evaluate the 'low level population' method (which works very well in heavier nuclei) in this mass region.The relative populations of 10 of the first 12 excited states of49V were determined (the relative populations of two of the low-lying states could not be obtained due to gamma-ray resolution limitations). The averagerelative populations weresimilar forthe three types of resonances.The experimental relative populations were compared with calculations performed with the statistical model code DICEBOX. Results for avariety of radiative strength function models yielded qualitatively similar results.These simulations agree only qualitatively with the experimental relative populations. Although the simulations suggest that the low level population method may work in this nuclide, the experimental results are at best ambiguous.Thus the statistical approach provides a reasonable qualitative description (but not a quantitative description) of the relative population of low-lying states in 49V.