Comparison of Sensitivities of Semiconductor (HPGe) and Scintillation (CeBr3) Detectors in the Measurement of Gamma Spectra Induced by Neutrons in the Model of Planetary Soil
Mitrofanov, I. G.; Golovin, D. V.; Kozyrev, A. S.; Litvak, M. L.; Sanin, A. B.; Mokrousov, M. I.; Shvetsov, V. N.; Timoshenko, G. N.; Vostrukhin, A. A.; Dubasov, P. V.; Zontikov, A. O.; Krylov, A. R.; Krylov, V. A.; Repkin, A. N.; Udovichenko, K. V.
Russia
Abstract
The results of neutron-activation measurements performed using the model of planetary soil and detectors based on high-purity germanium (HPGe) and cerium bromide (CeBr3) are reported. Gamma lines lying in the energy range from 200 keV to 8 MeV are used as indicators to compare these two types of detectors in experiments with the model irradiated by 14-MeV neutrons from a pulse neutron generator. The results will aid the design of scientific instruments for the active neutron and gamma spectroscopy of planet surfaces in future Russian and international lander missions (Luna-Glob, Luna-Resurs, and ExoMars-2020).