The growth of lead tungstate(PWO)single crystals and their luminescence properties such as light yield,scintillation decay time,and transmittance were reported.The colourless PWO single crystal has been obtained by us...The growth of lead tungstate(PWO)single crystals and their luminescence properties such as light yield,scintillation decay time,and transmittance were reported.The colourless PWO single crystal has been obtained by using the presyntheses powder.Ba,Nb,and Mg ions were doped in the crystals and the Ba-doped crystal has a relatively short decay time.Annealed crystal was found having a better transmission spectrum than that of unannealed one.展开更多
利用北京谱仪(BES)在=4.03 GeV 下正负电子对撞数据,研究了巴巴和双μ事例的 QED 过程.结果表明,实验数据在误差范围内同 QED 预言较好地一致,且从 e^+e^-和μ^+μ^-末态测出的两个亮度值在4%范围内相互一致.计算给出:BES 在该能区获取...利用北京谱仪(BES)在=4.03 GeV 下正负电子对撞数据,研究了巴巴和双μ事例的 QED 过程.结果表明,实验数据在误差范围内同 QED 预言较好地一致,且从 e^+e^-和μ^+μ^-末态测出的两个亮度值在4%范围内相互一致.计算给出:BES 在该能区获取数据的总积分亮度为23.1 pb^(-1).展开更多
文摘The growth of lead tungstate(PWO)single crystals and their luminescence properties such as light yield,scintillation decay time,and transmittance were reported.The colourless PWO single crystal has been obtained by using the presyntheses powder.Ba,Nb,and Mg ions were doped in the crystals and the Ba-doped crystal has a relatively short decay time.Annealed crystal was found having a better transmission spectrum than that of unannealed one.
文摘利用北京谱仪(BES)在=4.03 GeV 下正负电子对撞数据,研究了巴巴和双μ事例的 QED 过程.结果表明,实验数据在误差范围内同 QED 预言较好地一致,且从 e^+e^-和μ^+μ^-末态测出的两个亮度值在4%范围内相互一致.计算给出:BES 在该能区获取数据的总积分亮度为23.1 pb^(-1).
