M. Kobayashi et al., BISMUTH SILICATE BI4SI3O12, A FASTER SCINTILLATOR THAN BISMUTH-GERMANATE BI4GE3O12, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 372(1-2), 1996, pp. 45-50
Single crystals of bismuth silicate were grown by the Bridgman method.
The excitation and emission spectra are similar to BGO. The light out
put is 20% of BGO, giving FWHM energy resolution of 319b for 662 keV g
amma-rays (Cs-137). The decay constants are 2.4 ns (for 6% of intensit
y), 26 ns (12%) and 99 ns (82%). The radiation hardness against Co-60
gamma-rays was about 10(5)-10(6) rad at the emission peak of 480 nm. S
pontaneous recovery as well as optical annealing was also studied. BSO
may be one the promising scintillators for high energy physics experi
ments.