Temperature Dependence of Fluorescence Decay Time and Emission Spectrum of Bismuth Germanate

Depth of interaction determination with temperature gradient function in continuous bismuth germanate oxide (BGO) crystal

“…Statistical errors are about 1 ns, and they are not visible on the graph. The measured values of decay times differ significantly from that reported in reference [10], although the light pulse shape and its decay time constants were measured with a similar method. The observed difference can be related to the different characteristics of particular samples.…”

“…The observed difference can be related to the different characteristics of particular samples. It was mentioned in reference [10] that the presented results were less dependent on temperature than the previous data. Figure 6 shows the q parameter as a function of the crystal's temperature.…”

“…The light output and fluorescence decay time of BGO has a strong temperature dependence. As the temperature is decreased, the light output from the crystal increases about 7.6% per degree, and the decay time also increases 6.2 ns per degree (in a temperature range from 0 °C to 40 °C) [10].…”

Signal pulse emulation for scintillation detectors using Geant4 Monte Carlo with light tracking simulation

“…24 Moreover, the scintillation time properties of the BGO scintillator strongly depend on the temperature. 29 Thus, the time constant of the BGO scintillator is estimated to reproduce the exact measured pulse. The estimated parameters of the BGO scintillator which reproduced accurately the measured pulse are shown in Fig.…”

Performance of a PET detector module utilizing an array of silicon photodiodes to identify the crystal of interaction

“…When BGO is cooled to 0° C, its light output (and thus the signal) increases by a factor of 1.75 and its decay time increases by a factor of two (and so does the dead time) [8]. While the optimum operating temperature involves a tradeoff between crystal identification efficiency and dead time, it 'is very likely that an acceptable compromise can be reached.…”