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The cross section of the 193Ir(n, 2n)192Ir reaction has been determined by means of the activation technique, relative to the 27Al (n, α ) and 197Au(n, 2n) reference reactions cross sections, at neutron beam energies ranging from 10 to 21 MeV. The quasi-monoenergetic neutron beams were produced at the 5.5 MV Tandem T11/25 Accelerator Laboratory of NCSR "Demokritos" via the 2H(d, n) and 3H(d, n) reactions. The induced γ -ray activity of the irradiated target and reference foils was measured with high resolution HPGe detectors. In order to correct for the contribution of the 191Ir(n, γ )192Ir reaction, which is open to low energy parasitic neutrons, a recently developed analysis method was implemented and it is presented in great detail. Furthermore, cross section theoretical calculations were carried out using the EMPIRE and TALYS codes over a wide energy range. [ABSTRACT FROM AUTHOR]

The differential cross sections of the 2125 keV γ -ray, emitted by the 11 B ( p , p ′ γ ) 11 B reaction were measured at six (6) angles and at proton energies from 2.5 to 5.0 MeV. The experimental setup consisted of three (3) 100% relative efficiency HPGe detectors placed on a motorized turntable. The comparison between the present measurements, which have an overall uncertainty of ∼ 8%, and previous ones from literature gives contradictory results. While there are large differences with previous differential cross-section measurements from literature, there is good agreement with previous thick-target yield ones. Additional thick-target measurements were performed in an effort to explain the observed discrepancies. [ABSTRACT FROM AUTHOR]

Differential cross sections were measured at 8 angles and at proton energies from 2 to 5 MeV for the 10 B ( p , α γ ) 7 Be and 10 B ( p , p ′ γ ) 10 B reactions using two thin targets. The γ -rays emitted at E γ = 429 and 718 keV respectively, were detected by four HPGe detectors placed on a motorized turntable. The overall systematic uncertainty of the measurements was estimated to be ∼8% while the statistical errors did not exceed 5%. The validity of the obtained cross sections was tested by performing a thick target benchmarking experiment. The results of the present work are compared with existing ones from literature and possible explanations for the observed differences are discussed. [ABSTRACT FROM AUTHOR]