Abstract
The thermal neutron capture gamma radiations for 51V(n, g)52V reaction have been studied at Dalat Nuclear Research Reactor (DNRR). The gamma two-step cascade transition was measured by event-event coincidence spectrometer. The added-neutron binding energy in 52V was measured as 7.31 MeV. Energy and the intensity transition of cascades were consistent with prediction of single particle model. Furthermore, the spin and the parity of levels were confined.
Highlights
The exited states of 52V have been studied from 1960s, and the 52V level scheme has mainly been performed by means of the 51V(d, p)52V and 51V(n, γ)52V reactions
The bent crystal spectrometer was reduced by the interference from fortuitous combinations
The shaped and amplified timing signals by 474 timing filter amplifier (TFA) are plugged into 584 CFD modules, which are used in slow rise time rejection option (SRT) mode
Summary
The exited states of 52V have been studied from 1960s, and the 52V level scheme has mainly been performed by means of the 51V(d, p)52V and 51V(n, γ)52V reactions. The Ritz-combination principle was used to construct nuclear level scheme from low energy neutron capture gamma ray. The bent crystal spectrometer was reduced by the interference from fortuitous combinations This technique can be applied to gamma ray energies between 30 keV and several hundred keV. S. Michaelsen et al studied the level schemes of 52V with high sensitivity and very good energy resolution, via thermal neutron capture reactions. With development of HPGe detector, the sumcoincidence measurement method has been developed to “event-event” coincidence method which was digitalized In this experiment, the gamma intensities, excited levels of 52V in energy region below separation neutron energy, were measured by “event-event” coincidence method. The experimental results were compared with prediction of single particle model
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