1987 Vol. 11, No. 1
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Abstract:
The method and arrangement determining the energy spectrum of primary cosmic rays by measuring the Cerenkov radiation were described. The integral power index γ=1.80±0.11 of energy spectrum of primary cosmic rays wa measured at the energy range of 2....
The method and arrangement determining the energy spectrum of primary cosmic rays by measuring the Cerenkov radiation were described. The integral power index γ=1.80±0.11 of energy spectrum of primary cosmic rays wa measured at the energy range of 2....
Abstract:
In this paper the structure and the induced readout characteristics of a new type of plastic streamer tube is introduced. The relation between charge distribution spectra and high voltage on the induced strips and the charge distribution on the adjac...
In this paper the structure and the induced readout characteristics of a new type of plastic streamer tube is introduced. The relation between charge distribution spectra and high voltage on the induced strips and the charge distribution on the adjac...
Abstract:
This paper presents the characteristics, structure and parameters of the permanent magnet quadrupole lenses which have been used as a beam transport element in our linac. The methods of connection and adjustment are discussed. After transporting 15Me...
This paper presents the characteristics, structure and parameters of the permanent magnet quadrupole lenses which have been used as a beam transport element in our linac. The methods of connection and adjustment are discussed. After transporting 15Me...
Abstract:
An array of 9 BGO crystals of 20×20×200mm3 equipped with photomultiplier readout was assembled and tested. Radioactive γ and neutron sources, (p,γ) reactions by low energy protons from Van de Graaff accelerator and (n,γ) reactions by thermal neutrons...
An array of 9 BGO crystals of 20×20×200mm3 equipped with photomultiplier readout was assembled and tested. Radioactive γ and neutron sources, (p,γ) reactions by low energy protons from Van de Graaff accelerator and (n,γ) reactions by thermal neutrons...
Abstract:
In this paper, the coulomb disintegration cross-section and decay rate of the atom (π+Ω－) are calculated by using perturbation expansion of the quantized composite field theory and relativistic B-S wave function for spin (0－3/2) electromagnetic bound...
In this paper, the coulomb disintegration cross-section and decay rate of the atom (π+Ω－) are calculated by using perturbation expansion of the quantized composite field theory and relativistic B-S wave function for spin (0－3/2) electromagnetic bound...
Abstract:
We derived a new formula for the mass plitting of N and Δ on the basis of the Skyrme model with the consideration of the soft pion effect. The results showed that the soft-pion fluctuation cannot be ignored in the evaluation of the ground state energ...
We derived a new formula for the mass plitting of N and Δ on the basis of the Skyrme model with the consideration of the soft pion effect. The results showed that the soft-pion fluctuation cannot be ignored in the evaluation of the ground state energ...
Abstract:
The method developed by D.J.E.Callaway is applied to Ising model on a two-dimensional triangular lattice. A fixed point and critical exponent are found. The results are consistent with one of the exact theories very well. Obviously this method show s...
The method developed by D.J.E.Callaway is applied to Ising model on a two-dimensional triangular lattice. A fixed point and critical exponent are found. The results are consistent with one of the exact theories very well. Obviously this method show s...
Abstract:
The mechanism of high-energy A'－A collision (A>A',A'1/3>>1) and the space-time evolution of the fluid formed in the collision are analysed. The corresponding 1+1 dimensional hydrodynamical equations are established. The average rapidity distributions...
Abstract:
We have performed an experimental study of the α-fragments emitted from collisions between emulsion nuclei and heavy-ion projectiles at beam energies beyond 1A GeV. It is shown that the transverse momentum distributions of relativistic α-particles gi...
We have performed an experimental study of the α-fragments emitted from collisions between emulsion nuclei and heavy-ion projectiles at beam energies beyond 1A GeV. It is shown that the transverse momentum distributions of relativistic α-particles gi...
Abstract:
In this paper, the descending equations of cochains defined on simplexes are generalized to the general chains. We have also explained geometrically in some detail that the topological non-trivialness of physical quantities can descend from higher di...
In this paper, the descending equations of cochains defined on simplexes are generalized to the general chains. We have also explained geometrically in some detail that the topological non-trivialness of physical quantities can descend from higher di...
Abstract:
Using cumulant expansion method, we obtain gloun condensation for pure SU (2) gauge theory analytically.
Using cumulant expansion method, we obtain gloun condensation for pure SU (2) gauge theory analytically.
Abstract:
In the framework of relativistic Dirac's equation, a fermion elastic scattering from a nucleus has been discussed. The cross sections, analyzing power and spinrotation parameters for 500MeV proton scattered from He4,Ca40,48 and Pb208 have been calcul...
In the framework of relativistic Dirac's equation, a fermion elastic scattering from a nucleus has been discussed. The cross sections, analyzing power and spinrotation parameters for 500MeV proton scattered from He4,Ca40,48 and Pb208 have been calcul...
Abstract:
In the framework of the eikonal theory and using the first order π-nucleus optical potential, the elastic and inelastic scatterings of π± from well-deformed nuclei are discussed. The virtual excitations to the low-lying levels are taken into account ...
In the framework of the eikonal theory and using the first order π-nucleus optical potential, the elastic and inelastic scatterings of π± from well-deformed nuclei are discussed. The virtual excitations to the low-lying levels are taken into account ...
Abstract:
The special design and the technique of developing the 10MeV Beijing proton linac to 35MeV are described. The performance level of major components and the beam test results of whole machine are presented.
The special design and the technique of developing the 10MeV Beijing proton linac to 35MeV are described. The performance level of major components and the beam test results of whole machine are presented.
Abstract:
Energy spectra and angular distributions of the particles emitted from 12C+64Ni reaction at eight energies in the region of 36.5MeV—69.4MeV are measured. The angular distributions of α particles change from forward peaked one to that peaked near by t...
Energy spectra and angular distributions of the particles emitted from 12C+64Ni reaction at eight energies in the region of 36.5MeV—69.4MeV are measured. The angular distributions of α particles change from forward peaked one to that peaked near by t...
Abstract:
The angular distributions of fission fragments are measured for systems of 120MeV 14N+118Sn with mica track detectors and gold-surfacebarrier silicon detectors. The measured angular distributions can be fitted by the standard theory of fission angula...
The angular distributions of fission fragments are measured for systems of 120MeV 14N+118Sn with mica track detectors and gold-surfacebarrier silicon detectors. The measured angular distributions can be fitted by the standard theory of fission angula...
Abstract:
In the coincidence measurement between α-particles and projectile-like fragments in the reaction of 82.7MeV 16O on 27Al,the contour plot of the C-α coincidence in the velocity plane and the coincident angular correlation are obtained. Different mecha...
In the coincidence measurement between α-particles and projectile-like fragments in the reaction of 82.7MeV 16O on 27Al,the contour plot of the C-α coincidence in the velocity plane and the coincident angular correlation are obtained. Different mecha...
Abstract:
The continuous variable representation and the geometrical interpretation of the Elliott SU(3) model are given by virtue of the generator coordinate method. It is pointed out that the carrier subspace of collective states of the dynamical group SU(3)...
The continuous variable representation and the geometrical interpretation of the Elliott SU(3) model are given by virtue of the generator coordinate method. It is pointed out that the carrier subspace of collective states of the dynamical group SU(3)...
Abstract:
The features of d-d and d-3H equivalent local potentials are studied by using single channel RGM and two-channel RGM, respectively. The results show that those equivalent potentials have energy and state dependences (containing odd-even l-dependence ...
The features of d-d and d-3H equivalent local potentials are studied by using single channel RGM and two-channel RGM, respectively. The results show that those equivalent potentials have energy and state dependences (containing odd-even l-dependence ...
Abstract:
A systematic analysis on the νi13/2 pair in the even Pt isotopes has been carefully done. Comparisons between the experimental data and Nilsson cranked model results with different parameters κ,μ show. 1)An improved κ,μ set, which can nicely fit the ...
A systematic analysis on the νi13/2 pair in the even Pt isotopes has been carefully done. Comparisons between the experimental data and Nilsson cranked model results with different parameters κ,μ show. 1)An improved κ,μ set, which can nicely fit the ...
Abstract:
The mechanism of the formation of the band 2 in nuclei 156Er and 158Er has been discussed in the framwork of VMI model.
The mechanism of the formation of the band 2 in nuclei 156Er and 158Er has been discussed in the framwork of VMI model.
Abstract:
In the paper we give a new transformation in the reduced gravity, which is associated with the Virasoro algebra without the center term. To compare with the Geroch group it is easy to establish the relationship between the Virasoro algebra and the Ka...
In the paper we give a new transformation in the reduced gravity, which is associated with the Virasoro algebra without the center term. To compare with the Geroch group it is easy to establish the relationship between the Virasoro algebra and the Ka...
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