A measurement method of a detector response function for monochromatic electrons based on the Compton scattering

TL;DR

This paper introduces a novel calibration method for scintillation detectors using Compton scattering and germanium detectors, enabling precise measurements of detector response functions for monochromatic electrons.

Contribution

The method uniquely arranges gamma-ray sources and detectors adjacently, improving calibration accuracy for low atomic number material detectors.

Findings

Effective calibration for low-Z detectors.

Enhanced precision in electron energy response measurement.

Applicable to scintillators with large Compton-to-photoelectric ratio.

Abstract

In this paper we present a method of scintillation detector energy calibration using the gamma-rays. The technique is based on the Compton scattering of gamma-rays in a scintillation detector and subsequent photoelectric absorption of the scattered photon in the Ge-detector. The novelty of this method is that the source of gamma rays, the germanium and scintillation detectors are immediately arranged adjacent to each other. The method presents an effective solution for the detectors consisting of a low atomic number materials, when the ratio between Compton effect and photoelectric absorption is large and the mean path of gamma-rays is comparable to the size of the detector. The technique can be used for the precision measurements of the scintillator light yield dependence on the electron energy.