2001 Vol. 25, No. 9
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Abstract:
We present here the result of observation of TeV gamma ray emission from the galactic plane at a galactic longitude of 79.3866 deg. With Atmospheric Cherenkov Telescopes (ACT2 and ACT3) located at Xinglong station. The data was taken between Oct. 199...
We present here the result of observation of TeV gamma ray emission from the galactic plane at a galactic longitude of 79.3866 deg. With Atmospheric Cherenkov Telescopes (ACT2 and ACT3) located at Xinglong station. The data was taken between Oct. 199...
Abstract:
Based on the Ingelman-Schlein model for hard diffractive scattering and the factorization formalism of non-relativistic QCD for quarkonia production, we present a study of associated J/ψ+γ production through single Pomeron exchange approaching Tevert...
Based on the Ingelman-Schlein model for hard diffractive scattering and the factorization formalism of non-relativistic QCD for quarkonia production, we present a study of associated J/ψ+γ production through single Pomeron exchange approaching Tevert...
Abstract:
Annihilation of pp in-flight into π0π0η is an excellent reaction to search for glueballs with quantum numbers JPC=0－+,2－+decaying to π0π0η, and exotic state with JPC =1－+ decaying to π0η. The relativistic tensor formalism of partial wave analysis and...
Annihilation of pp in-flight into π0π0η is an excellent reaction to search for glueballs with quantum numbers JPC=0－+,2－+decaying to π0π0η, and exotic state with JPC =1－+ decaying to π0η. The relativistic tensor formalism of partial wave analysis and...
Abstract:
In this paper, the superposition of the qs-coherent states is constructed, and its nonclassical properties such as squeezing property, antibunching effect are studied. The effects of the superposition coefficient and deformed parameter q and s variab...
In this paper, the superposition of the qs-coherent states is constructed, and its nonclassical properties such as squeezing property, antibunching effect are studied. The effects of the superposition coefficient and deformed parameter q and s variab...
Abstract:
High spin states in 143Pm have been investigated via the 128Te(19F,4nγ)143Pm reaction using techniques of in-beam γ-spectroscopy. γ-ray singles,γ-γ coincidences, γ-ray anisotropies and DCO ratios have been measured. Based on these measurements, the l...
High spin states in 143Pm have been investigated via the 128Te(19F,4nγ)143Pm reaction using techniques of in-beam γ-spectroscopy. γ-ray singles,γ-γ coincidences, γ-ray anisotropies and DCO ratios have been measured. Based on these measurements, the l...
Abstract:
The breakup reaction of neutron rich nucleus 17N on 197Au and 9Be targets has been measured at RIBLL (Radioactive Ion Beam Line at Lanzhou). The product yields and the cross sections of charged particles in pair at forward angles were measured with t...
The breakup reaction of neutron rich nucleus 17N on 197Au and 9Be targets has been measured at RIBLL (Radioactive Ion Beam Line at Lanzhou). The product yields and the cross sections of charged particles in pair at forward angles were measured with t...
Abstract:
Light charged particles emitted from the reactions of 35MeV/u 40Ar+197Au have been measured. The slope nuclear temperature parameters and the isotope nuclear temperature parameters are extracted from the slope of energy spectra and double isotope yie...
Light charged particles emitted from the reactions of 35MeV/u 40Ar+197Au have been measured. The slope nuclear temperature parameters and the isotope nuclear temperature parameters are extracted from the slope of energy spectra and double isotope yie...
Abstract:
To check the feasibility of deep inelastic heavy-ion reactions in populating the high-spin states in Z≈56,N≈80 nuclei, a test experiment has been carried out by using the reaction of 410 MeV 82Se+natBa. γ-γ coincidence measurements have been performe...
To check the feasibility of deep inelastic heavy-ion reactions in populating the high-spin states in Z≈56,N≈80 nuclei, a test experiment has been carried out by using the reaction of 410 MeV 82Se+natBa. γ-γ coincidence measurements have been performe...
Abstract:
Particle radiative capture cross sections of 12C(n,γ) and 12C(p,γ) have been calcaulated at 90° in the neutron energy range of 5—25MeV and proton energy range of 8—35MeV. Pigmy resonance exists at the excitation energy Ex=13MeV in 12C(n,γ) reaction. ...
Particle radiative capture cross sections of 12C(n,γ) and 12C(p,γ) have been calcaulated at 90° in the neutron energy range of 5—25MeV and proton energy range of 8—35MeV. Pigmy resonance exists at the excitation energy Ex=13MeV in 12C(n,γ) reaction. ...
Abstract:
Using the new model developed for the light nucleus reactions, the cross sections of the reaction n+16O have been calculated, especially the double differential cross sections of the outgoing neutrons have been calculated. To conserve the angular mom...
Using the new model developed for the light nucleus reactions, the cross sections of the reaction n+16O have been calculated, especially the double differential cross sections of the outgoing neutrons have been calculated. To conserve the angular mom...
Abstract:
The anisotropy of the azimuthal distributions of the final state particles from nucleus-nucleus collisions is studied within the microscopic transport approach. A clear signature of the azimuthal correlation between directed and elliptic flow is evid...
The anisotropy of the azimuthal distributions of the final state particles from nucleus-nucleus collisions is studied within the microscopic transport approach. A clear signature of the azimuthal correlation between directed and elliptic flow is evid...
Abstract:
The two-dimensional uncoupled quartic oscillator was chosen to test the validity of the Berry-Tabor trace formula. Periodic orbits of the system were calculated by integrating Hamiltonian equations of motion on reasonable tori and the curvatures on t...
The two-dimensional uncoupled quartic oscillator was chosen to test the validity of the Berry-Tabor trace formula. Periodic orbits of the system were calculated by integrating Hamiltonian equations of motion on reasonable tori and the curvatures on t...
Abstract:
By resolving Tolman Oppenheimer Volkoff equation based on a temperature, density, and isospin dependent nuclear equation of state of nuclear matter, we obtained the mass of neutron star as a function of central density, and the radius of neutron star...
By resolving Tolman Oppenheimer Volkoff equation based on a temperature, density, and isospin dependent nuclear equation of state of nuclear matter, we obtained the mass of neutron star as a function of central density, and the radius of neutron star...
Abstract:
A new approach to studying the condition of onset of dissipation fission is put forward. Based on this approach, the analysis for a large body of data at intermediate and heavy fission system (A>160) indicates that the angular momentum and temperatur...
A new approach to studying the condition of onset of dissipation fission is put forward. Based on this approach, the analysis for a large body of data at intermediate and heavy fission system (A>160) indicates that the angular momentum and temperatur...
Abstract:
A method is introduced to measure the trigger efficiency in R scan experiment carried out with BESII at BEPC. The design of trigger table, offline event selection and calculation of efficiency are described. The principle of trigger efficiency measur...
A method is introduced to measure the trigger efficiency in R scan experiment carried out with BESII at BEPC. The design of trigger table, offline event selection and calculation of efficiency are described. The principle of trigger efficiency measur...
Abstract:
A double gap Resistive Plate Chamber (RPC) made of Chinese materials is constructed and tested with cosmic ray. The detection efficiency is close to 100% and the time resolution is around 2ns. The variation of detection efficiency curves and time res...
A double gap Resistive Plate Chamber (RPC) made of Chinese materials is constructed and tested with cosmic ray. The detection efficiency is close to 100% and the time resolution is around 2ns. The variation of detection efficiency curves and time res...
Abstract:
In this paper,a study of the radiation damage and re-magnetizing utilization of the permanent magnet wiggler used in the Beijing Free Electron Laser facility is reported. For the radiation damaged wiggler,the magnetic strength can be restored to the ...
In this paper,a study of the radiation damage and re-magnetizing utilization of the permanent magnet wiggler used in the Beijing Free Electron Laser facility is reported. For the radiation damaged wiggler,the magnetic strength can be restored to the ...
Abstract:
The design of the BFEL optical cavity's 5-D precise remote-control adjuster is described. This paper discusses the special chracteristic of the FEL cavity,and introduces how to inplement the transfer of the cavity's displacement and angle adjusting i...
The design of the BFEL optical cavity's 5-D precise remote-control adjuster is described. This paper discusses the special chracteristic of the FEL cavity,and introduces how to inplement the transfer of the cavity's displacement and angle adjusting i...
Abstract:
The Disk and Washer (DAW) accelerating structure not only has shunt impedance and high Q value,but also has a high coupling constant between the neighboring cells. At X band,its advantages are especially useful. In this work, a mathematical model use...
The Disk and Washer (DAW) accelerating structure not only has shunt impedance and high Q value,but also has a high coupling constant between the neighboring cells. At X band,its advantages are especially useful. In this work, a mathematical model use...
Abstract:
This paper illustrates the measurement principle for constructing Helmhotz coil system by using the magnetic flux method, by which the magnetic parameters of a permanent block can be measured. Also, this paper gives the method of software design base...
This paper illustrates the measurement principle for constructing Helmhotz coil system by using the magnetic flux method, by which the magnetic parameters of a permanent block can be measured. Also, this paper gives the method of software design base...
Abstract:
The transmutation of nuclear waste 129I in the subcritical system was studied in the present work using both theoretical and experimental methods. In the experiment, the energetic proton beam (1.0 GeV) form accelerator was used to bombard a thick lea...
The transmutation of nuclear waste 129I in the subcritical system was studied in the present work using both theoretical and experimental methods. In the experiment, the energetic proton beam (1.0 GeV) form accelerator was used to bombard a thick lea...
Abstract:
A prototype of single cell Multi-gap Resistive Plate Chamber (MRPC) has been made together with the setup of the test system. The property of the chamber has been tested with both the cosmic ray test system and the test beam facility T10 of CERN in G...
A prototype of single cell Multi-gap Resistive Plate Chamber (MRPC) has been made together with the setup of the test system. The property of the chamber has been tested with both the cosmic ray test system and the test beam facility T10 of CERN in G...
Abstract:
This reply pointed out that the conclusion of 《Comment on “The Proof of Irreducibility Postulation and Its Applications”》 is incorrect.
This reply pointed out that the conclusion of 《Comment on “The Proof of Irreducibility Postulation and Its Applications”》 is incorrect.
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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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- Cosmology
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