1997 Vol. 21, No. S2
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Abstract:
The structure, operation principle, and performance of the bi-dimension position sensitive avalanche chamber (BPAC) used in the study of fusion fission induced by heavy ions at the near- and sub-barrier energy regions are described.
The fold angle dis...
The structure, operation principle, and performance of the bi-dimension position sensitive avalanche chamber (BPAC) used in the study of fusion fission induced by heavy ions at the near- and sub-barrier energy regions are described.
The fold angle dis...
Abstract:
Decays of the J/ψ resonance into the three-photon final state are investigated. Branching ratios for the decays of J/ψ→γπ0 and J/ψ→γη' are determined to be Br(J/ψ→γπ0)=(4.6±1.1)×10-5 and Br(J/ψ→γη')=(4.12±0.82)—10-3. The ratio of the two decay widths...
Decays of the J/ψ resonance into the three-photon final state are investigated. Branching ratios for the decays of J/ψ→γπ0 and J/ψ→γη' are determined to be Br(J/ψ→γπ0)=(4.6±1.1)×10-5 and Br(J/ψ→γη')=(4.12±0.82)—10-3. The ratio of the two decay widths...
Abstract:
High-spin states of 162Lu have been produced and studied via the 147Sm (19F,4nγ) 162Lu reaction. In-beam γ-rays were measured by using 1 planar detector and 7 high-purity Ge detector with BGO anti-Compton shield. The level scheme of the yrast band in...
High-spin states of 162Lu have been produced and studied via the 147Sm (19F,4nγ) 162Lu reaction. In-beam γ-rays were measured by using 1 planar detector and 7 high-purity Ge detector with BGO anti-Compton shield. The level scheme of the yrast band in...
Abstract:
This paper supposes that all cosmic ray (CR) particles of energy below 3×1018eV mainly originate and accelerate in an individual explosion of the supernova (SN) in the Galaxy; with the use of an isotropic diffusion propagation model, the non-steady s...
This paper supposes that all cosmic ray (CR) particles of energy below 3×1018eV mainly originate and accelerate in an individual explosion of the supernova (SN) in the Galaxy; with the use of an isotropic diffusion propagation model, the non-steady s...
Abstract:
The paper describes the structure and performance of the phoswich telescope made of 1 mm thick scintillator NE102A and 40 mm thick CsI(Tl). The front area of the CsI(Tl) is 24 mm×24 mm and back area is 37 mm×37 mm. The Z=1 isotopes p, d, t, and all o...
The paper describes the structure and performance of the phoswich telescope made of 1 mm thick scintillator NE102A and 40 mm thick CsI(Tl). The front area of the CsI(Tl) is 24 mm×24 mm and back area is 37 mm×37 mm. The Z=1 isotopes p, d, t, and all o...
Abstract:
The incomplete-fusion-fragmentation model is used to analyze the fragmentation of the projectile remnant in the 600 MeV/uAu+Au reaction. The theoretical results of the mass number, the excitation energy, and the thermodynamic temperature of the proje...
The incomplete-fusion-fragmentation model is used to analyze the fragmentation of the projectile remnant in the 600 MeV/uAu+Au reaction. The theoretical results of the mass number, the excitation energy, and the thermodynamic temperature of the proje...
Abstract:
The thermalization, expansion, and radial flow in the processes of intermediate energy heavy ion collisions are discussed via the BUU model. From the calculation of quadrupole momenta and density distributions, it is shown that the global equilibrium...
The thermalization, expansion, and radial flow in the processes of intermediate energy heavy ion collisions are discussed via the BUU model. From the calculation of quadrupole momenta and density distributions, it is shown that the global equilibrium...
Abstract:
The ground state properties of the nuclei near Z = 8 and Z = 50 are investigated by the Skyrme-Hartree-Fock approach with new force parameters SKI2, SKD, and SKI4. Calculations show that the Skyrme-Hartree-Fock theory with the above force parameters ...
The ground state properties of the nuclei near Z = 8 and Z = 50 are investigated by the Skyrme-Hartree-Fock approach with new force parameters SKI2, SKD, and SKI4. Calculations show that the Skyrme-Hartree-Fock theory with the above force parameters ...
Abstract:
With a density-, temperature-, and momentum-dependent mean field, five different phases of nuclear equation of states (gas, liquid, super-heated liquid, super-cooled gas, and mechanical instability of the spinodal phase) for 197Au are described. Afte...
With a density-, temperature-, and momentum-dependent mean field, five different phases of nuclear equation of states (gas, liquid, super-heated liquid, super-cooled gas, and mechanical instability of the spinodal phase) for 197Au are described. Afte...
Abstract:
A simulation of the electron cooling process for the heavy ion beam in the proposed HIRFL cooler-storage ring (HIRFL-CSR) is performed by taking into account the betatron and synchrotron oscillations of single particles. The continuous evolution of i...
A simulation of the electron cooling process for the heavy ion beam in the proposed HIRFL cooler-storage ring (HIRFL-CSR) is performed by taking into account the betatron and synchrotron oscillations of single particles. The continuous evolution of i...
Abstract:
In this paper, the design, simulation, and experimentation of a multi-cavity RF gun with a thermionic cathode for BFEL is described. This RF gun consists of 1/2+3 cavities with an on-axis coupling structure operated in the π/2 mode at 2856 MHz. We sh...
In this paper, the design, simulation, and experimentation of a multi-cavity RF gun with a thermionic cathode for BFEL is described. This RF gun consists of 1/2+3 cavities with an on-axis coupling structure operated in the π/2 mode at 2856 MHz. We sh...
Abstract:
A novel multi-cavity RF thermionic gun with very weak back bombardment effects has been designed, manufactured, tested, and subjected to experimentation. In this paper, we focus on the experimental results of this RF gun. From the current pulse shape...
A novel multi-cavity RF thermionic gun with very weak back bombardment effects has been designed, manufactured, tested, and subjected to experimentation. In this paper, we focus on the experimental results of this RF gun. From the current pulse shape...
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