1985 Vol. 9, No. 4
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Abstract:
A study of the anisotropy of primary cosmic raya is presented. The expression of the anisotropy is derived in a model of statistical discrete sources in an infinite galaxy. Using these derived formulas, the amplitudes of the first harmonic anisotropi...
A study of the anisotropy of primary cosmic raya is presented. The expression of the anisotropy is derived in a model of statistical discrete sources in an infinite galaxy. Using these derived formulas, the amplitudes of the first harmonic anisotropi...
Abstract:
We have observed the arrival times of EAS initiated by cosmic rays of E>1014eV using the EAS array in Beijing. The distribution of arrival time intervals of EAS With E>2.6×1014eV is considerably higher than the exponential distribution in the region ...
We have observed the arrival times of EAS initiated by cosmic rays of E>1014eV using the EAS array in Beijing. The distribution of arrival time intervals of EAS With E>2.6×1014eV is considerably higher than the exponential distribution in the region ...
Abstract:
The testing results on a SQS gas sampling shower counter with cosmic rays are reported. The measurement shows that this detector can clearly reconstruct the tracks of cosmic ray charged particles. The position resolution is better than 0.6% (450cm fu...
The testing results on a SQS gas sampling shower counter with cosmic rays are reported. The measurement shows that this detector can clearly reconstruct the tracks of cosmic ray charged particles. The position resolution is better than 0.6% (450cm fu...
Abstract:
In this paper we discuss the U(5) limit of U(6/20) supersymmetry in nuclei. First we discuss the reduction of the relevant group chain. Then we discuss the dynamical symmetry in the case of M=1. Finally we make comparison between the theoretical calc...
In this paper we discuss the U(5) limit of U(6/20) supersymmetry in nuclei. First we discuss the reduction of the relevant group chain. Then we discuss the dynamical symmetry in the case of M=1. Finally we make comparison between the theoretical calc...
Abstract:
In this paper the SLAC bag model is discussed by using the method of fermion coherent state. The results agree with the SLAC bounded state solution, so that quark confinement can be illustrated. In addition, a non-quark bag solution and a non-bounded...
In this paper the SLAC bag model is discussed by using the method of fermion coherent state. The results agree with the SLAC bounded state solution, so that quark confinement can be illustrated. In addition, a non-quark bag solution and a non-bounded...
Abstract:
An SO(10)×SO(8) model of grand unified theory is proposed. It can accommodate the color singlet particles with fractional charges (for example: e/2 or e/3), and the model satisfies the Dirac quantization rule with magnetic charge 1/2e. This theory pr...
Abstract:
Using dimensional regularization, we show by explicitly calculation to the one-loop level that the validity of the axial vector Ward identities in SU(2)L×U(1)Y model which contains heavy leptons and is free from Adler-Bell-Jackiw(ABJ) anomalies is in...
Using dimensional regularization, we show by explicitly calculation to the one-loop level that the validity of the axial vector Ward identities in SU(2)L×U(1)Y model which contains heavy leptons and is free from Adler-Bell-Jackiw(ABJ) anomalies is in...
Abstract:
The contributions from the valence quark state and the higher Fock states of hadronic wavefunctions in the process π0→γγ are analyzed in this paper. An important result, the contribution to the amplitude of the process π0→γγ from the valence Fock sta...
The contributions from the valence quark state and the higher Fock states of hadronic wavefunctions in the process π0→γγ are analyzed in this paper. An important result, the contribution to the amplitude of the process π0→γγ from the valence Fock sta...
Abstract:
In this paper, we derive the Λ-N S wave separation potential from the scattering lengths and effective ranges obtained from the Λ-N single K, η, ω and 2π, πρ meson exchange potential. Based on calculating the S wave phase shift of Λ-p elastic scatter...
In this paper, we derive the Λ-N S wave separation potential from the scattering lengths and effective ranges obtained from the Λ-N single K, η, ω and 2π, πρ meson exchange potential. Based on calculating the S wave phase shift of Λ-p elastic scatter...
Abstract:
The α-particles induced by 6.8MeV/A—5.1MeV/A 14N on 59Co and 51V targets were measured using ΔE-E semiconductor telescope. The energy spectra, the angular distributions and the contour plots of d2σ/dΩdE in the E-θ plane were obtained. The direct α-pa...
The α-particles induced by 6.8MeV/A—5.1MeV/A 14N on 59Co and 51V targets were measured using ΔE-E semiconductor telescope. The energy spectra, the angular distributions and the contour plots of d2σ/dΩdE in the E-θ plane were obtained. The direct α-pa...
Abstract:
The experimental results of sequential fission are presented for collision of 238U (5.4MeV/u) on 48Ca,45S and 238U(6.0MeV/u) on 16O,48Ca,45Sc,48Ti,58Fe,64Ni and 89Y targets. The measurements of ternary events in exit channel have been performed by tr...
The experimental results of sequential fission are presented for collision of 238U (5.4MeV/u) on 48Ca,45S and 238U(6.0MeV/u) on 16O,48Ca,45Sc,48Ti,58Fe,64Ni and 89Y targets. The measurements of ternary events in exit channel have been performed by tr...
Abstract:
In this note the relation between IBM-Ⅰ and IBM-Ⅱ is briefly discussed from the F-spin symmetry. In order to discuss the symmetry breaking quantitatively, the Hamiltonian is divided into two parts: one is F-spin symmetric and the other breaks the F-s...
In this note the relation between IBM-Ⅰ and IBM-Ⅱ is briefly discussed from the F-spin symmetry. In order to discuss the symmetry breaking quantitatively, the Hamiltonian is divided into two parts: one is F-spin symmetric and the other breaks the F-s...
Abstract:
The color-analog Van der Waals force between two hadrons is studied by use of the coupling channel resonating group method in the framework of the Gaussian-type quark confinement potential. The problem of the boundary values for the two channel coupl...
The color-analog Van der Waals force between two hadrons is studied by use of the coupling channel resonating group method in the framework of the Gaussian-type quark confinement potential. The problem of the boundary values for the two channel coupl...
Abstract:
A mapping between the SU6 subspace of the S-D boson states in the interacting boson model (IBM) of nuclei and the SU6 subspace of the b-boson states as proposed by D.Janssen et al. is established. It is shown that under the mapping the SU6 infinitesi...
A mapping between the SU6 subspace of the S-D boson states in the interacting boson model (IBM) of nuclei and the SU6 subspace of the b-boson states as proposed by D.Janssen et al. is established. It is shown that under the mapping the SU6 infinitesi...
Abstract:
Possible filling up of 27 dimensional representation of SU(3) by pp,pn,Λp,Σ－p,ΛΛ and Ξ－p dibaryon resonant states is proposed. The theoretical results agree with the experimental ones very well. Possible existence of other dibaryon resonant states as...
Possible filling up of 27 dimensional representation of SU(3) by pp,pn,Λp,Σ－p,ΛΛ and Ξ－p dibaryon resonant states is proposed. The theoretical results agree with the experimental ones very well. Possible existence of other dibaryon resonant states as...
Abstract:
Using the VMI model for the calculations of alignment angular momenta of nuclei 156Er and 162Er, it isn't difficult to discover that there are different shape transitions for nuclei 156Er and 162Er when a pair of nucleons are dispaired and aligned.
Using the VMI model for the calculations of alignment angular momenta of nuclei 156Er and 162Er, it isn't difficult to discover that there are different shape transitions for nuclei 156Er and 162Er when a pair of nucleons are dispaired and aligned.
Abstract:
In this paper, a new technology about self-quenching streamer counter-induced readout with resistive eathode, some characteristics and preliminary results are introduced. We have investigated the influence of wire diameter, dead time on plateau curve...
Abstract:
A large area plastic scintillation counter(100×20×1cm3) for TOF measurement has been made and the performance of this counter has been measured. A self researched new type Mean-Timer was used to much better eliminate the time difference of the fluo-r...
A large area plastic scintillation counter(100×20×1cm3) for TOF measurement has been made and the performance of this counter has been measured. A self researched new type Mean-Timer was used to much better eliminate the time difference of the fluo-r...
Abstract:
For SU(3) lattice gauge theory two alternative actions proposed by us are studied by means of Monte Carlo method, their internal energy per plaquette and specific heat are calculated. The curves of their internal energy approach to the same weak-coup...
For SU(3) lattice gauge theory two alternative actions proposed by us are studied by means of Monte Carlo method, their internal energy per plaquette and specific heat are calculated. The curves of their internal energy approach to the same weak-coup...
Abstract:
In the framework of the SU(2)×U(1) gauge theory, we assume that there are two left-handed doublets, and tow neutral singlets of leptons After the spontaneous symmetry breaking, we have electron and its neutrino, a new charged heavy lepton and its neu...
In the framework of the SU(2)×U(1) gauge theory, we assume that there are two left-handed doublets, and tow neutral singlets of leptons After the spontaneous symmetry breaking, we have electron and its neutrino, a new charged heavy lepton and its neu...
Abstract:
Recently, a kind of proton synchrotron with high repetition rate is developed and comes into wide use. But this leads to more severe requirements on the ferrites which are used in the RF system in accelerators. One of them is the time response. In th...
Recently, a kind of proton synchrotron with high repetition rate is developed and comes into wide use. But this leads to more severe requirements on the ferrites which are used in the RF system in accelerators. One of them is the time response. In th...
IF: 3.6
Monthly issued, founded in 1977
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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
- Particle physics
- Nuclear physics
- Particle and nuclear astrophysics
- Cosmology
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