Intrinsic Resolution of Compton Electrons in CeBr3 Scintillator Using Compact CCT

CeBr
₃
is emerging as one of the best scintillators having properties almost similar to cerium-doped lanthanum halide scintillators. We have measured, for the first time, the intrinsic energy resolution of Compton electrons in a cylindrical 1"×1" CeBr
₃
detector using the sources, namely,
^{1 37C}
s,
²²
Na, and
⁶⁰
Co employing Compton coincidence technique. We have used the PIXIE-4 data acquisition system that makes the measurement setup quite compact. The measurements of intrinsic energy resolution of Compton electrons were made in the energy range of 0.1-1 MeV. The measurements of intrinsic energy resolution of gamma rays were also made, for the comparison. The preliminary results have clearly suggested that δ-ray component is a major contributor to the intrinsic resolution of CeBr
₃
.