Supported by the National Natural Science Foundation of China(Nos.11175171,10835006,11105139 and 10975133)
A digital three-detector positron lifetime spectrometer was developed.It consists of a DRS4 waveform digitizing board and three La Br3scintillation detectors coupled to XP2020Q photomultiplier tubes.DRS4 waveform digi...
Supported by National Natural Science Foundation of China(11175171,10835006,11105139,10975133)
A new simple digital positron lifetime spectrometer has been developed. It includes a DRS4 waveform digitizing board and two scintillation detectors based on the XP2020Q photomultiplier tubes and LaBr3 scintillators. ...
Project supported by the National Natural Science Foundation of China (Grant Nos. 10835006 and 10975133)
A new method of processing positron annihilation lifetime spectra is proposed. It is based on an artificial neural network (ANN)-back propagation network (BPN). By using data from simulated positron lifetime spect...