1998 Vol. 22, No. 6

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Review
Precise Determination of the Light Yield of Scintillation Crystals
Wu Jian, Xu Tong, Li Cheng, Wang Xiaolian, Wang Zhaomin, Li Hongjie, Chen Hongfang, Xu Zizong
1998, 22(6): 481-485.
Abstract:
A new fitting method together with the Monte Carlo simulation is developed to process the full pulse-height spectrum of a 137Cs source in PbWO4 crystals to get the precise light yield of the crystal in photoelectrons per MeV. This method is also usef...
Study on the Background in Single Photon Time Measurement
Wang Zhaomin, Xu Zizong, Wu Chong
1998, 22(6): 486-491.
Abstract:
In this paper, the source and time distribution of background in the single photon time measurement are studied. By using the method of coincident gate the random coincident background and the Cherenkov light produced on the window of the photocathod...
Analytical study of Lattice U(1) and U(1)-Higgs Models at Finite Temperature With Symanzik Action
Ren Xuezao, Zhu Yunlun, Chen Ying
1998, 22(6): 492-498.
Abstract:
The lattice U(1) and U(1) -Higgs models with Symanzik action are analytically studied at finite temperature using variational cumulant expansion (VCE). The Polyakov lines and the critical index β are calculated. The results show that VCE of system wi...
Technicolor Dynamics Corrections to Wtb Coupling
Yue Chongxing, Yang Zhengtao, Huang Jinshu, Lu Gongru
1998, 22(6): 499-506.
Abstract:
We consider the contributions of new gauge bosons to Wtb cuopling in one generation technicolor (OGTC) model and topcolor assisted multiscale technicolor (TOPCMTC) model. We find that the exchange of diagonal extended technicolor (ETC) gauge boson ha...
Infinite Number of Integrals of Motion in Classically Integrable System With Boundary (Ⅱ)
Chen Yixin, Luo Xudong
1998, 22(6): 507-521.
Abstract:
In Affine Toda field theory, links among three generating functions for integrals of motion derived from P. (Ⅰ) are studied, and some classically integrable boundary conditions are obtained. An infinite number of integrals of motion are calculated in...
Factorial Moments and Factorial Correlations in α Model for Non-Fixing Multiplicity
Lin Hai, Zhao Ren, Liu Lianshou
1998, 22(6): 522-528.
Abstract:
Using the self-affine fractal of two-dimensional phase space and Monte Carlo simulation, the dependence of the factorial moments and the factorial correlations on the multiplicity relative strength of fluctuation are studied for non-fixing multiplici...
Application of Wavelet Transformation in Analysis of Multiplicity Phase Space
Lin Hai, Liu Lianshou
1998, 22(6): 529-537.
Abstract:
Using the wavelet transformation, the probability distribution for the multiplicity phase space which is obtained by simulation from random cascading α model is discussed. We find that using the wavelet transformation the probability moments and the ...
Finite Range Effects of Local Interactionin Intermediate Energy HIC
Chen Liewen, Zhang Fengshou, Zeng Xianghua
1998, 22(6): 538-544.
Abstract:
A finite range Gaussian 2-body interaction is applied in stead of the zero range 2-body part of the Skyrme interaction in the isospin-dependent quantum molecular dynamics model to simulate the transverse momentum in the reaction of system 93Nb(E=400M...
Theoretical Study of Superdeformed Triaxial Bands
Xing Zheng, Wang Zixing, Chen Xingqu, Xu Jinzhang
1998, 22(6): 545-549.
Abstract:
Using the particle-rotor model, a theoretical study of the superdeformed triaxial bands in 163Lu,165Lu and 167Lu is carried out. An overall and good agreement between the calculated and observed transition energies, kinematic and dynamic moments of i...
On Q-Dependent Behavior of the Polarized Structure Functions in the Resonance Region
Dong Yubing
1998, 22(6): 550-555.
Abstract:
Based on an improved constituent quark model description, the Q2-evolution of the spin-dependent structure functions for proton and neutron are calculated in the resonance region. Moreover,the total photoabsorption cross sections are also predicted. ...
J/ψ Dissociation in Hot and Dense Matter
Liu Bo, Shen Pengnian, Jiang Huanqing
1998, 22(6): 556-563.
Abstract:
The energy spectra of heavy quark bound states are analyzed using the error-function-type potential and the one-gluon-exchange Coulomb-type force. The Debye screening mass at finite temperature and density is studied in the thermofield dynamics appro...
Research and Design of Electron Gun of Electrocurtain
Chen Pengfei, Zhang Mingchao, Li Xinmin, Wang Yuhong
1998, 22(6): 564-569.
Abstract:
The characteristics of the electron beam current transport in the electron gun of the electrocurtain accelerator were studied and the origin of the influence on longitudinal uniformity of beam current was analysed. The deflection of the cathode is co...
Diagnosis of Individual Cell Frequencies in a Coupled Cavity Chain Without Introducing Objects Into the Cavity
Ni Yi, Xiao Liling, Tong Dechun, Tian Bo, Jin Qingxiu, Huang Yuanzhong
1998, 22(6): 570-575.
Abstract:
In this paper, a new method that can diagnose the cell frequencies in a cavity without a perturbing probe is presented. The cell frequencies and couplings between cells arc estimated in terms of the measured passband performance. This method will sim...

ISSN 1674-1137 CN 11-5641/O4

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