Emission spectra,longitudinal transmission and light output for the Sb-doped and Y-doped PbWO_(4) crystals are presented.Scintillation decay kinetics has been measured by using gate integration and single photon count...Emission spectra,longitudinal transmission and light output for the Sb-doped and Y-doped PbWO_(4) crystals are presented.Scintillation decay kinetics has been measured by using gate integration and single photon counting method with blue and green filters.Radiation hardness has also been measured by using ^(60)Coγ-ray irradiation under different dose rates and different dose rate profiles.The light yield and radiation hardness of the Sb-doped and Y-doped PbWO_(4) crystals are improved as compared to the undoped crystals and are suitable for the requirements of compact muon solenoid.展开更多
The multiplicity fluctuations of charged particles produced in pp collisions at 400 GeV/c have been studied by means of the bunching parameters(BPs).The results show that the values of BPsŋ2(M)andŋ3(M)depend not only ...The multiplicity fluctuations of charged particles produced in pp collisions at 400 GeV/c have been studied by means of the bunching parameters(BPs).The results show that the values of BPsŋ2(M)andŋ3(M)depend not only on the width of multiplicity distribution,but also on the phase space correlations.The BPs:ŋ2(M)andŋ3(M)follow the same power-law behavior,which indicates that the multifractal structure in pp collisions at 400 GeV/c is observed.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.59932002.
文摘Emission spectra,longitudinal transmission and light output for the Sb-doped and Y-doped PbWO_(4) crystals are presented.Scintillation decay kinetics has been measured by using gate integration and single photon counting method with blue and green filters.Radiation hardness has also been measured by using ^(60)Coγ-ray irradiation under different dose rates and different dose rate profiles.The light yield and radiation hardness of the Sb-doped and Y-doped PbWO_(4) crystals are improved as compared to the undoped crystals and are suitable for the requirements of compact muon solenoid.
基金Supported by the National Natural Science Foundation of China under Grant No.19675033.
文摘The multiplicity fluctuations of charged particles produced in pp collisions at 400 GeV/c have been studied by means of the bunching parameters(BPs).The results show that the values of BPsŋ2(M)andŋ3(M)depend not only on the width of multiplicity distribution,but also on the phase space correlations.The BPs:ŋ2(M)andŋ3(M)follow the same power-law behavior,which indicates that the multifractal structure in pp collisions at 400 GeV/c is observed.
