Performance of the LaBr3(Ce) scintillator for nuclear resonance fluorescence experiment

Performance of the LaBr
₃
(Ce) scintillator for nuclear resonance fluorescence (NRF) experiment was investigated. Linearity and energy resolutions of the LaBr
₃
(Ce) scintillator of 3 inch in diameter × 3 inch in thickness were measured using NRF scattering gamma ray from
²⁰⁸
Pb (5.5 MeV and 7.3 MeV) and
²⁴
Mg (10.7 MeV). The linearity of the output for the gamma ray energy was less than 1% and the energy resolution of the scintillator in keV was almost proportional to the square root of the gamma ray energy up to 10.7 MeV.