Fast neutron induced gamma rays from (n,n’), (n,p) and (n,α) reactions on CaCO3

Abstract Emission of prompt gamma rays following (n,n’), (n,p) and (n,α) reactions induced by irradiation a calcium carbonate (CaCO 3 ) sample with beam fission neutrons was investigated modified version the FaNGaS (Fast Neutron-induced Gamma-ray Spectrometry) instrument operated at Heinz Maier-Leibnitz Zentrum (MLZ) in Garching. The neutron spectrum has an average energy 2.30 MeV position fast flux (1.13 ± 0.04) × 10 8 cm −2 s −1 . measurement performed angle 90° between detector. In total, we claim identification 38 lines, from which have assigned 12 to (n,n’) reaction (7 for 40 Ca, 1 42 Ca 4 44 Ca), C(n,n’) C reaction, 2 oxygen (1 16 O 18 O). other observed lines are attributed Ca(n,p) K (20 lines) Ca(n,α) 37 Ar (3 lines). Relative intensities averaged partial cross sections presented compared available literature data. Our results were found be good agreement data but also improved complemented it, as pointed out possible errors identified new lines. Additionally, counting time h detection limits calcium, carbon determined 5, 13 64 mg, respectively.