1990 Vol. 14, No. 9
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Abstract:
A positron dislocation trapping model which considers the effects of positron detrapping from dislocations is given.The temperature dependence on α (the ratio between the number of positrons trapped directly from bulk into jogs and that of positrons ...
A positron dislocation trapping model which considers the effects of positron detrapping from dislocations is given.The temperature dependence on α (the ratio between the number of positrons trapped directly from bulk into jogs and that of positrons ...
Abstract:
The main drift chamber of the Beijing Spectrometer (BES) has been described briefly,including its physical design,mechanical design and construction,choice of the working gas as well as prototyping.The performance of the chamber,experimental or expec...
The main drift chamber of the Beijing Spectrometer (BES) has been described briefly,including its physical design,mechanical design and construction,choice of the working gas as well as prototyping.The performance of the chamber,experimental or expec...
Abstract:
In this paper we systematically analyse and generalize the Boson Realization Method proposed by the author for constructing indecomposable representations of Lie (super) algebras.We prove that the representations thus obtained cover the master repres...
In this paper we systematically analyse and generalize the Boson Realization Method proposed by the author for constructing indecomposable representations of Lie (super) algebras.We prove that the representations thus obtained cover the master repres...
Abstract:
The contribution of internal fermion one-loop to the Casimir energy between two parallel conducting are calculated by using the Feynman path integral method.The force per unit area is 0.00025dyne/cm2.
The contribution of internal fermion one-loop to the Casimir energy between two parallel conducting are calculated by using the Feynman path integral method.The force per unit area is 0.00025dyne/cm2.
Abstract:
In this paper,we explicitly drive the expressions of Fusion and Braid matrices in the minimal model,and show the solvability of D-F equation.
In this paper,we explicitly drive the expressions of Fusion and Braid matrices in the minimal model,and show the solvability of D-F equation.
Abstract:
The chiral quark-soliton model with one gluon exchange is described simply in the present work,and the quark-gluon coupling constant and quark wave function,which are determined in this soliton model,are used to study two-nucleon system in the relati...
The chiral quark-soliton model with one gluon exchange is described simply in the present work,and the quark-gluon coupling constant and quark wave function,which are determined in this soliton model,are used to study two-nucleon system in the relati...
Abstract:
Based on the analyses of the transverse energy distributions data measured by the HELIOS collaboration group on 16O-A collisions experiments at 200A GeV,the necessity of considering non-geometrical effects in target fragmentation is pointed out,and t...
Based on the analyses of the transverse energy distributions data measured by the HELIOS collaboration group on 16O-A collisions experiments at 200A GeV,the necessity of considering non-geometrical effects in target fragmentation is pointed out,and t...
Abstract:
The details of the one loop on-mass-shell renormalization of the chiral σ model in nuclear matter are given.The nucleon energy density in nuclear matter is calculated and the results are compared with that of the zero point renormalization scheme.
The details of the one loop on-mass-shell renormalization of the chiral σ model in nuclear matter are given.The nucleon energy density in nuclear matter is calculated and the results are compared with that of the zero point renormalization scheme.
Abstract:
The angular distributions of fission fragments and the excitation functions have been measured for the 12C+209Bi and 14N+Pb reactions with a gold surface barrier silicon detector and mica nuclear track detectors.The measured fission excitation functi...
The angular distributions of fission fragments and the excitation functions have been measured for the 12C+209Bi and 14N+Pb reactions with a gold surface barrier silicon detector and mica nuclear track detectors.The measured fission excitation functi...
Abstract:
From some special phenomena observed in the reaction of 16O+27Al,we proposed a simple model of INDIC.in which a direct projectile breakup in the initial stage (16O→12C+α)is succeeded by a dissipative interaction between the heavy projectile fragment ...
From some special phenomena observed in the reaction of 16O+27Al,we proposed a simple model of INDIC.in which a direct projectile breakup in the initial stage (16O→12C+α)is succeeded by a dissipative interaction between the heavy projectile fragment ...
Abstract:
In this paper,a recurrent formula for α-row partition is given.The multiplicity of total angular momentum of single-j fermion system and single-l boson system have been calculated with this formula.This formula is vary efficient to simplify the calcu...
In this paper,a recurrent formula for α-row partition is given.The multiplicity of total angular momentum of single-j fermion system and single-l boson system have been calculated with this formula.This formula is vary efficient to simplify the calcu...
Abstract:
Some analytical expressions of state expansion coefficents for SON SON－1 in terms of SUN SUN－1 SON－1 are derived.Analytical expressions of some multiplicity-free isoscalar factors for SUN SON for the coupling [w1w20…0]×[w30…0]→[w1w20…0] for the SUN g...
Some analytical expressions of state expansion coefficents for SON SON－1 in terms of SUN SUN－1 SON－1 are derived.Analytical expressions of some multiplicity-free isoscalar factors for SUN SON for the coupling [w1w20…0]×[w30…0]→[w1w20…0] for the SUN g...
Abstract:
Many superdeformed bands have been observed in A=120—140 mass region.The occupation of vi13/2 orbit is generally considered as the important cause.vi13/2 band head energy and deformation of odd N nuclei for Z=56—64 and N=69—77 has been calculated sys...
Many superdeformed bands have been observed in A=120—140 mass region.The occupation of vi13/2 orbit is generally considered as the important cause.vi13/2 band head energy and deformation of odd N nuclei for Z=56—64 and N=69—77 has been calculated sys...
Abstract:
The condensation of the naive fermions in an arbitrary dimensional lattice is given in the tree graph approximation.No chiral symmetry spontaneous broken is found.
The condensation of the naive fermions in an arbitrary dimensional lattice is given in the tree graph approximation.No chiral symmetry spontaneous broken is found.
Abstract:
We have analyzed and studied the time variation of the daily counting rates of the very high-energy events observed by a large cloud-chamber system during August 1972 at a mountain altitude of 3200 meters above sea-level.An obvious increase of counti...
We have analyzed and studied the time variation of the daily counting rates of the very high-energy events observed by a large cloud-chamber system during August 1972 at a mountain altitude of 3200 meters above sea-level.An obvious increase of counti...
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