21-29 July 2022
US/Pacific timezone

Cross section measurements of ${}^{7}$Li(d,x) tritium and beryllium production, ${}^{39}$K(n,p)${}^{39}$Ar for HPRL

27 Jul 2022, 07:57
Folsom ()



Daniil Koliadko


The Nuclear Energy Agency's High Priority Nuclear Data Request List (HPRL) is a compilation of the highest priority nuclear data requirements. The U-120M cyclotron of the Nuclear Physics Institute of the Czech Academy of Sciences is a suitable tool for studies of several reactions from this list. In this paper, we present the measurements of the ${}^{7}$Be and tritium production in the lithium after irradiation with deuterons (ID: 116H and 117H) and the validation measurement for the ${}^{39}$Ar production in ${}^{39}$K after irradiation with neutrons (ID: 45H).

The U-120M cyclotron is used to accelerate deuterons up to 20 MeV. The deuterons are directed to Li$_{2}$CO$_{3}$ pellets with 100% enriched ${}^{7}$Li. After the irradiation, the ${}^{7}$Be production is measured by gamma spectrometry, and tritium production is measured by dissolving the pellet in the liquid scintillator and with the aid of scintillation equipment.

For the measurement of the ${}^{39}$Ar production in the reaction ${}^{39}$K(n,p)${}^{39}$Ar, the muscovite mica foil is irradiated using well known continuous neutron spectrum from the p+Be neutron generator. The beta spectra from the decay of ${}^{40}$K, ${}^{39}$Ar, and other beta emitters in the mica foil are recorded using the PIN diode before and after the irradiation. The amount of produced ${}^{39}$Ar is deduced from the differences between the recorded spectra.

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