Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8039947 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2016 | 5 Pages |
Abstract
Differential cross-section of proton induced γ-ray emission from the reactions 24Mg(p,pâ²Î³)24Mg (Eγ = 1369 keV), 25Mg(p,pâ²Î³)25Mg (Eγ = 390, 585, 975 keV) and 26Mg(p,γ)27Al (Eγ = 1014 keV) were measured for proton energies from 1 to 3 MeV using a 60 μg/cm2 Mg target evaporated on a 40 μg/cm2 Ag thin film. The γ-rays were collected by a 50% relative efficiency HPGe detector placed at an angle of 90° with respect to the beam direction, while the backscattered protons were collected by an ion implanted Si detector placed at a scattering angle of 165°. Simultaneous collection of γ-ray and RBS spectra is a great advantage of this approach which makes differential cross-section measurements independent on the collected beam charge. Measured cross-section values were compared with the previously reported data in the literature. Absolute γ-ray differential cross-sections were obtained with an overall systematic uncertainty of about ±6% and statistical uncertainty of less than ±5% for proton energies higher than 2.24 MeV.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
N. Sharifzadeh, O. Kakuee, S. Mohammadi,