1987 Vol. 11, No. 5
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Abstract:
It is described that the function,structure, amplitude characteristics and results of cosmic ray test of a prototype of the central drift chamber for Beijing Spectrometer (BES). It was found that if appropriate high voltage is applied on the field wi...
It is described that the function,structure, amplitude characteristics and results of cosmic ray test of a prototype of the central drift chamber for Beijing Spectrometer (BES). It was found that if appropriate high voltage is applied on the field wi...
Abstract:
Based on the basic principle of the function of the parrallel plate spark chamber, two formulae relating the clearing field to the detection efficiency and sentive time are derived. The validity of these formulae are tested by experiment and shown th...
Based on the basic principle of the function of the parrallel plate spark chamber, two formulae relating the clearing field to the detection efficiency and sentive time are derived. The validity of these formulae are tested by experiment and shown th...
Abstract:
This paper describes a position sensitive multiwire proportional chamber with effective area of 200×200mm2. The chamber combining with multi-layer lead γ-ray converter form a high density multiwire proportional chamber γ-ray detector. The lead conver...
This paper describes a position sensitive multiwire proportional chamber with effective area of 200×200mm2. The chamber combining with multi-layer lead γ-ray converter form a high density multiwire proportional chamber γ-ray detector. The lead conver...
Abstract:
In this paper I summarize some results obtained from analyses of hadronic final state events. The analyzed data sample comes from Mark-J collaboration and covers an energy range from √S=12GeV to √S =46.78GeV. The integrated luminosity is 128.06Pb－1. ...
In this paper I summarize some results obtained from analyses of hadronic final state events. The analyzed data sample comes from Mark-J collaboration and covers an energy range from √S=12GeV to √S =46.78GeV. The integrated luminosity is 128.06Pb－1. ...
Abstract:
The kinematical analysis of the ring-like event observed in mountain emulsion chamber shows that this kind of events might relate to the multi-particle production within a narrow rapidity interval of the fragmentation region in the superhigh energy i...
The kinematical analysis of the ring-like event observed in mountain emulsion chamber shows that this kind of events might relate to the multi-particle production within a narrow rapidity interval of the fragmentation region in the superhigh energy i...
Abstract:
In order to avoid unnecessary or unallowable exposure in the gamma-neutron mixed field, the radioactive-contact person should know the radiation environment at any time by himself when he is working. A new kind of pocket radiation doserate monitor (c...
In order to avoid unnecessary or unallowable exposure in the gamma-neutron mixed field, the radioactive-contact person should know the radiation environment at any time by himself when he is working. A new kind of pocket radiation doserate monitor (c...
Abstract:
This paper is devoted to a study of the heterotic string action described by a (p,q)-type supersymmetric σ-model involving a two-rank antisymmetric tensor field (Wess-Zumino-Witten term). We discussed a certain quantization procedure of W-Z-W term an...
This paper is devoted to a study of the heterotic string action described by a (p,q)-type supersymmetric σ-model involving a two-rank antisymmetric tensor field (Wess-Zumino-Witten term). We discussed a certain quantization procedure of W-Z-W term an...
Abstract:
In terms of the modified Sturm-Liouville theorem, the properties of the solutions to the Klein-Gordon equations with the potential tails
is discussed and the corresponding Levinson's theorem is proved in this paper.
In terms of the modified Sturm-Liouville theorem, the properties of the solutions to the Klein-Gordon equations with the potential tails
is discussed and the corresponding Levinson's theorem is proved in this paper.
Abstract:
Using the parabolic Fermi distribution of the nucleon number density instead of the average density, a new method of computing the effective color dielectric constant and the nucleon bag radius in nuclei is presented, so that the physical picture is ...
Using the parabolic Fermi distribution of the nucleon number density instead of the average density, a new method of computing the effective color dielectric constant and the nucleon bag radius in nuclei is presented, so that the physical picture is ...
Abstract:
This article treats the interacting Boson model (IBM-1) by the embeding theory of Lie subalgebra. From the considerations of stantard A1 subagbra and the index relation of the embedding theory, we can get all the subagbra chains of IBM-1 model and pr...
This article treats the interacting Boson model (IBM-1) by the embeding theory of Lie subalgebra. From the considerations of stantard A1 subagbra and the index relation of the embedding theory, we can get all the subagbra chains of IBM-1 model and pr...
Abstract:
In this paper, some decomposotion formulas of γ-type matrices are derived based on Gordon identities. As an illustration of the application of these formulas, the one gluon exchange potential between quark and antiquark is rederived which appears to ...
In this paper, some decomposotion formulas of γ-type matrices are derived based on Gordon identities. As an illustration of the application of these formulas, the one gluon exchange potential between quark and antiquark is rederived which appears to ...
Abstract:
The energy reponse in the effective solid angles and the spatial distribution of the detection efficiency for the four frequently used 8Be detection systems are obtained by two methods: Monte Carlo simulation and integration of the distribution funct...
The energy reponse in the effective solid angles and the spatial distribution of the detection efficiency for the four frequently used 8Be detection systems are obtained by two methods: Monte Carlo simulation and integration of the distribution funct...
Abstract:
Excitation functions and angular distributions of the residual nuclei I and Sb were measured in the reaction of 12C on 115In at energies up to 72MeV using radiochemical techniques. A kinematic analysis of the angular distributions showed probable mec...
Excitation functions and angular distributions of the residual nuclei I and Sb were measured in the reaction of 12C on 115In at energies up to 72MeV using radiochemical techniques. A kinematic analysis of the angular distributions showed probable mec...
Abstract:
The oscillatory structure appeared in the differential cross section of the reaction for 16O(16O, 12C)20Ne may be explained by particle transfer from covalent channel to ionic channel in the nuclear molecular orbital theory.
The oscillatory structure appeared in the differential cross section of the reaction for 16O(16O, 12C)20Ne may be explained by particle transfer from covalent channel to ionic channel in the nuclear molecular orbital theory.
Abstract:
A simple model by which the mass drift can be expected in heavy ion reaction is suggested. The drift of average value of mass distribution with increasing dissipation energy is very small, because large damping effect hinders the driving potential in...
A simple model by which the mass drift can be expected in heavy ion reaction is suggested. The drift of average value of mass distribution with increasing dissipation energy is very small, because large damping effect hinders the driving potential in...
Abstract:
Using our approximate angular momentum projection method with one parameter, the projection spectra of the axially symmetric Hartree-Fock intrinsic states are studied. The approximate and the exact projection matrix elements are obtained and compared...
Using our approximate angular momentum projection method with one parameter, the projection spectra of the axially symmetric Hartree-Fock intrinsic states are studied. The approximate and the exact projection matrix elements are obtained and compared...
Abstract:
In this paper, a controlled annihilation principle of particles and antiparticles is suggested. The particles and antiparticles are kept in a common space by an electromagnetic field to form an equipartisma or semiequipartisma. The equipartisma and s...
In this paper, a controlled annihilation principle of particles and antiparticles is suggested. The particles and antiparticles are kept in a common space by an electromagnetic field to form an equipartisma or semiequipartisma. The equipartisma and s...
Abstract:
A simple relaxation equation have been obtained from the master equation of the occupation number by means of the time average approximation in the dissipation diabatic dynamic theory. Contributions from one-body and two-body collision processes to t...
A simple relaxation equation have been obtained from the master equation of the occupation number by means of the time average approximation in the dissipation diabatic dynamic theory. Contributions from one-body and two-body collision processes to t...
Abstract:
The cosmological term is necessaritly vanishing in a conformal gravitational theory, and the sum of the induced cosmological constants of all the brocken gauge symmetries cancels the curvature of the background spacetime. Thus the sum of all the cosm...
The cosmological term is necessaritly vanishing in a conformal gravitational theory, and the sum of the induced cosmological constants of all the brocken gauge symmetries cancels the curvature of the background spacetime. Thus the sum of all the cosm...
Abstract:
A detailed analysis of the particle-particle correlation has been made and modes of internal motions have been found.
A detailed analysis of the particle-particle correlation has been made and modes of internal motions have been found.
Abstract:
Calculations have been performed for the energy separation of the two major substitutional states of the hypernucleus 40ΛCa. The (K－,π－) cross sections are calculated in the framework of the distorted-wave impulse approximation. Information about the...
Calculations have been performed for the energy separation of the two major substitutional states of the hypernucleus 40ΛCa. The (K－,π－) cross sections are calculated in the framework of the distorted-wave impulse approximation. Information about the...
Abstract:
The rephasing invariant formulation for the K0-K0 system is given and used to discuss the signs of the B parameter in M12 calculation andsin δ in the K-M matrix (both are positive). The meaning of the singularity appeared in the exact formula of the ...
The rephasing invariant formulation for the K0-K0 system is given and used to discuss the signs of the B parameter in M12 calculation andsin δ in the K-M matrix (both are positive). The meaning of the singularity appeared in the exact formula of the ...
Abstract:
The combination of partition temperature with Bose-Einstein statistics is generalized to describe the proton nucleus collision. The rapidity distribution of pp, p-Ar and p-Xe at PL=200GeV/c have been calculated and compared with experiment. The inter...
IF: 3.6
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ISSN 1674-1137 CN 11-5641/O4
Original research articles, Ietters and reviews Covering theory and experiments in the fieids of
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- Particle and nuclear astrophysics
- Cosmology
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