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 Fundamental Research Funds for the Central Universities and the National Natural Science Fundation of China(Grant Nos.11105139 and 11175171)
The charge-state-dependent lattice relaxation of mono-vacancy in silicon is studied using the first-principles pseu- dopotential plane-wave method. We observe that the structural relaxation for the first-neighbor atom...