Cross Section Measurements of Neutron Induced Reactions on GaAs using Monoenergetic Beams from 7.5 to 15 MeV

• Published in: Journal of physics. Conference series Vol. 312; no. 6; pp. 062008 - 6
• Main Authors: Raut, R, Crowell, A S, Fallin, B, Howell, C R, Huibregtse, C, Kelley, J H, Kawano, T, Kwan, E, Rusev, G, Tonchev, A P, Tornow, W, Vieira, D J, Wilhelmy, J B
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 23.09.2011
• Subjects: Channels; Cross sections (physics); Estimating; Foils; Gallium arsenide; Gamma spectroscopy; Mathematical models; Neutron beams; Neutron flux; Nuclear cross sections; Physics; Samples; Statistical analysis; Statistical methods; Statistical models
• ISSN: 1742-6596; 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/312/6/062008

Cross section measurements for the neutron induced reactions on GaAs have been carried out at ten different neutron energies from 7.5 to 15 MeV, using the activation technique. The monoenergetic neutron beams were produced via the 2H(d,n)3He reaction, known for it's high neutron yield in the chosen energy regime. GaAs samples were activated along with the Au and Al monitor foils, for estimating the incident neutron flux. The induced activiy was measured using high resolution γ-ray spectroscopy. Five reaction channels viz., 69Ga(n, 2n) Ga, 69Ga(n,p)69mZn, 71Ga(n,p)71mZn, 75As(n, 2n)74As and 75As(n,p)75Ge, have been reported for the comprehensive cross section measurements. The results are compared with the existing literature data and the available evaluations. Statistical model calculations, based on the Hauser-Feshbach formalism, have been carried out using the TALYS and EMPIRE codes and are compared with the experimental values.