Cross section measurements for gallium in the neutron energy range of 13.5 to 14.8MeV

Abstract

AbstractCross sections for (n,2n), (n,p) and (n,n´α) reactions have been measured on gallium isotopes at the neutron energies of 13.5–14.8 MeV using the activation technique. The monoenergetic neutron beam was producedviathe3H(d,n)4He reaction. The neutron fluences were determined using the monitor reaction27Al(n,α)24Na. The activities induced in the reaction products were measured using high-resolution gamma-ray spectrometry. Data are reported for the following reactions:69Ga(n,2n)68Ga,71Ga(n,2n)70Ga,69Ga(n,p)69mZn,71Ga(n,p)71mZn and71Ga(n,n´α)67Cu. Nuclear model calculations using the code HFTT, which employs the Hauser–Feshbach (statistical model) and exciton model (precompound effects) formalisms, were undertaken to describe the formation of the reaction products. Results are discussed and compared with some corresponding values found in the literature, with some established systematics and with the evaluated data given in ENDF/B-VII.0, CENDL-3.1 and JENDL-4.0.