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Double -- photon exclusive processes with heavy quark -- heavy antiquark pairs in high-energy Pb-Pb collisions at LHC
Double -- photon exclusive processes heavy quark -- heavy antiquark pairs high-energy Pb-Pb collisions
2011/1/6
The cross section for exclusive heavy quark and heavy antiquark pair (Q¯Q) production in periph-eral ultrarelativistic heavy ion collisions is calculated for the LHC energy √sNN = 5.5 TeV. Here w...
Single and Double Photonuclear Excitations in Pb+Pb Collisions at the LHC
Single Double Photonuclear Excitations Pb+Pb Collisions
2011/1/10
Cross sections are calculated for single and double photon exchange in ultra-peripheral Pb+Pb
collisions at the LHC. The particle production is simulated with the DPMJET event generator.
Large cross...
(Pb,La)TiO3铁电薄膜的太赫兹时域光谱实验研究
太赫兹时域光谱 PLT薄膜 烧结温度
2009/11/2
利用THz时域光谱技术(THz-TDS)探测了制作在SiO2/Si衬底上的(Pb,La)TiO3铁电薄膜的频谱响应，获得了三种不同烧结温度的掺镧钛酸铅(PLT)薄膜的THz频谱。根据实验数据计算得到了PLT薄膜在0.2～3 THz频段内的吸收系数、折射率和复介电常数，并对比了三种不同烧结温度的PLT薄膜的实验计算结果。实验结果表明，三种PLT薄膜在所测频段内均有较强吸收，且都在1.5 THz处有一...
激光诱导击穿光谱(LIBS)作为一种新兴的元素分析技术，具有实时在线、非接触、多元素同时探测等诸多优点。将LIBS技术引入土壤泥浆重金属污染的检测分析，力图发展一种针对泥浆重金属污染监测的原位传感技术。实验选择Pb作为探测元素，Mn为内标元素;采用重复频率10 Hz的Nd∶YAG调Q激光器的二倍频(532 nm)输出作为激发光源，CCD收集信号，对实验室配制的不同浓度Pb泥浆样品的LIBS信号进行...
基于Pb和LiF复合阴极的高对比度有机电致发光器件
有机电致发光 金属-绝缘体复合薄膜 高对比度
2009/5/5
通过氟化锂和铅共蒸，做成金属-绝缘体复合阴极，降低了阴极反射率，进而实现了高对比度有机电致发光器件(OLED)。对该高对比度器件的光学反射特性和电学特性进行了研究，并与传统的金属铝/氟化锂阴极器件进行了比较。该铅-氟化锂复合阴极的反射率只有18%，比相同厚度铝阴极的反射率降低了大约5倍，另外，该高对比度器件的电致发光特性与传统器件大致相当。
Properties of Ag-Doped Bi(1.6)Pb(0.4)Sr2Ca3Cu(4-x)AgxOy (2234) Oxides Prepared by S.S.R. Method
Ag-Doped Bi Solid-State-Reaction x-ray diffraction
2010/4/15
The effect of Ag-doping Bi1.6Pb0.4Sr2Ca3Cu4-xAgxOy compounds (x=0.0-1.0), prepared by conventional Solid-State-Reaction (SSR) technique, was studied using x-ray diffraction (XRD) and electrical resist...