A high efficiency, low background detector for measuring pair-decay branches in nuclear decay

TL;DR

This paper presents a high-efficiency, low-background detector designed specifically for measuring electron-positron pair transitions in nuclei, optimized for high event rates and energies up to 7 MeV.

Contribution

The paper introduces a novel detector design that is insensitive to gamma rays and capable of handling high event rates for nuclear pair-decay measurements.

Findings

Achieved high detection efficiency for pair transitions.

Successfully minimized background signals from gamma rays.

Operates effectively at energies up to 7 MeV.

Abstract

We describe a high efficiency detector for measuring electron-positron pair transitions in nuclei. The device was built to be insensitive to gamma rays and to accommodate high overall event rates. The design was optimized for total pair kinetic energies up to about 7 MeV.