(b) Coincidence counting rate versus electron energy for an angle of 180° between the electron and the recoil nucleus.
Tc-99m concentration for further phantom study was determined based on the counting rate of clinical bone SPECT/CT.
(a) Coincidence counting rate versus angle between the electron and the recoil nucleus, for electrons in the energy range 2.5 4.0 mc2.
Measurements of Ag-target X-ray spectra also show the ability of the system to perform accurate estimation of the input counting rate up to 1.1 Mcps/pixel.
The background counting rate in the detector corresponds to a neutron flux of (6.5±2.1 ×10−7 cm−2 s−1 in the range 1.0 11.0 MeV.
The results on counting rate capabilities, dependence of the tube gain on external magnetic field and cross-talks between individual channels are presented.
Results of simulation showed that regarding to higher attenuation slope and also counting rate, the transmission-based technique is more sensitive to density change than the scattering modality.
Monte Carlo simulation showed that regarding to higher attenuation slope and also counting rate, the transmission-based technique is more sensitive to density change than the scattering modality.
RPC design, gas mixture, limits on the bulk resistivity of ceramic electrodes, efficiency, time resolution, counting rate capabilities and ageing test results are presented.
The code allows to calculate the efficiency of the TAC for every neutron capture state, as a function of energy, crystal multiplicity, and counting rate.
The counting rate capability of the devices, the dependence of the tube gain versus magnetic field and the cross talks between readout channels were studied.
