Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8041650 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2014 | 4 Pages |
Abstract
Differential cross section for proton induced γ-ray emission from the reaction 27Al(p,pâ²Î³)27Al (Eγ = 844 and 1014 keV) were measured for proton energies from 2.5 to 4.1 MeV, at 90° and 45°, using a 29 μg/cm2 Al target evaporated on a self-supporting thin Ag film. The γ-rays were detected by two HPGe detectors with nominal 50% and 25% relative efficiency, respectively for the detector placed at 90° and at 45°. Absolute γ-ray differential cross sections were obtained with a method not dependent on the absolute values of the collected beam charge; the overall uncertainty was estimated to be better than 8%, at both angles and at all the beam energies.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
M. Chiari, B. Melon, L. Salvestrini, M. Fonseca, E. Alves, A.P. Jesus,