1992 Vol. 16, No. 2
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Abstract:
Best fitting the pseudorapidity distribution data from ISR and SppS in inelastic process,assuming that the multiplicity distribution of secondary particles approximately follows the KNO scaling and transverse momentum approximately follows f(pt)∝pt·e...
Best fitting the pseudorapidity distribution data from ISR and SppS in inelastic process,assuming that the multiplicity distribution of secondary particles approximately follows the KNO scaling and transverse momentum approximately follows f(pt)∝pt·e...
Abstract:
This paper describes the radiation source and its characteristics of the Synchrotron Radiation Experimental Hall of BEPC,the radiation measuring method and measured results.It has been found that the radiation dose level of the Synchrotron Radiation ...
This paper describes the radiation source and its characteristics of the Synchrotron Radiation Experimental Hall of BEPC,the radiation measuring method and measured results.It has been found that the radiation dose level of the Synchrotron Radiation ...
Abstract:
We calculate the W-boson electric dipole moment in the Weinberg-Higgs model in which the Cp violation is mediated by charged Higgs boson exchange and compare our results with other works.
We calculate the W-boson electric dipole moment in the Weinberg-Higgs model in which the Cp violation is mediated by charged Higgs boson exchange and compare our results with other works.
Abstract:
A new formula for the hyperfine mass splitting of mesons is established by using energy-dependent spin-spin potential between quark and antiquark.Data analysis indicates that this formula is capable of describing hyperfine mass splitting of mesons in...
A new formula for the hyperfine mass splitting of mesons is established by using energy-dependent spin-spin potential between quark and antiquark.Data analysis indicates that this formula is capable of describing hyperfine mass splitting of mesons in...
Abstract:
Relativistic microscopic optical potential of nucleon-nucleus is derived from the relativistic Brueckner-Bethe-Goldstone (RBBG) equation.The complex effective mass of a nucleon is determined by a fit to 200MeV p-40Ca scattering data.The relativistic ...
Relativistic microscopic optical potential of nucleon-nucleus is derived from the relativistic Brueckner-Bethe-Goldstone (RBBG) equation.The complex effective mass of a nucleon is determined by a fit to 200MeV p-40Ca scattering data.The relativistic ...
Abstract:
By means of the imaginary-time Green's function method,the temperature dependences of the η-meson and nucleon interaction coupling constant and one one η-meson exchange potential are discussed.We find that when temperature increases to 215MeV,the cou...
By means of the imaginary-time Green's function method,the temperature dependences of the η-meson and nucleon interaction coupling constant and one one η-meson exchange potential are discussed.We find that when temperature increases to 215MeV,the cou...
Abstract:
If the antiproton optical potential is inclusive of the spin orbit interaction term,the A(p,p)A* inelastic scattering not only can excited the normal parity states,but also can excited the abnormal parity states.There are also induced the polarizatio...
If the antiproton optical potential is inclusive of the spin orbit interaction term,the A(p,p)A* inelastic scattering not only can excited the normal parity states,but also can excited the abnormal parity states.There are also induced the polarizatio...
Abstract:
Contribution from the breakup-fusion mechanism to continuum spectra of nuclear reaction is introduced.In this mechanism a two-step process is considered in which the projectile breaks up to two pieces in the field of target,and fusion of one piece wi...
Contribution from the breakup-fusion mechanism to continuum spectra of nuclear reaction is introduced.In this mechanism a two-step process is considered in which the projectile breaks up to two pieces in the field of target,and fusion of one piece wi...
Abstract:
Activation techniques have been used to measure the cross-section for 58Ni(n,p),60Ni(n,p) and 62Ni(n,α) reactions in the neutron energy range 13.6—17.8MeV.The uncertainty of measured data has been aculated from 3%—7%.The covariance matrixes for measu...
Activation techniques have been used to measure the cross-section for 58Ni(n,p),60Ni(n,p) and 62Ni(n,α) reactions in the neutron energy range 13.6—17.8MeV.The uncertainty of measured data has been aculated from 3%—7%.The covariance matrixes for measu...
Abstract:
The differntial elastic scattering cross sections of Zr for 14.2MeV neutrons are measured by the associated particle time-flight method at angles from 10° to 140°.The corrections for neutron flux attenuation,multiple scattering and finite geometry ar...
The differntial elastic scattering cross sections of Zr for 14.2MeV neutrons are measured by the associated particle time-flight method at angles from 10° to 140°.The corrections for neutron flux attenuation,multiple scattering and finite geometry ar...
Abstract:
By employing the 1/N expansion technique,the analytical expressions of the reduced E4 matrix elements are derived for deformed nuclei.The results of the strengths of E4 transitions show that the inclusion of the rotational effects in E4 transition im...
By employing the 1/N expansion technique,the analytical expressions of the reduced E4 matrix elements are derived for deformed nuclei.The results of the strengths of E4 transitions show that the inclusion of the rotational effects in E4 transition im...
Abstract:
A mass formula with deformation and shell corrections for a few free parameters was described.By means of the formula the calculations of 1440 nuclear masses and 1250 two neutron separation energies s2n in the region of 28≤Z≤81 were performed.The roo...
A mass formula with deformation and shell corrections for a few free parameters was described.By means of the formula the calculations of 1440 nuclear masses and 1250 two neutron separation energies s2n in the region of 28≤Z≤81 were performed.The roo...
Abstract:
Some properties about the effective boson charges are discussed in term of the neutron-proton interacting boson model.The effective boson charges of some U(5)-like and O(6)-like nuclei are extracted from the experimental data of electromagnetic trans...
Some properties about the effective boson charges are discussed in term of the neutron-proton interacting boson model.The effective boson charges of some U(5)-like and O(6)-like nuclei are extracted from the experimental data of electromagnetic trans...
Abstract:
Degeneracy of parity even and odd electron solutions of the free Dirac equation may cause uncertainties in first order calculation of the perturbatiove energy.Choosing the even parity solution to start perturbation is though direct,not theoretically ...
Degeneracy of parity even and odd electron solutions of the free Dirac equation may cause uncertainties in first order calculation of the perturbatiove energy.Choosing the even parity solution to start perturbation is though direct,not theoretically ...
Abstract:
In order to convenience for the data analysis of BES some new relations which can be used to search for the 1－+ exotic state in J/ψ→ωX,X→KKπ have been obtained.How to search for the 1－+ exotic state in the three-step two-body hadronic decay process J...
In order to convenience for the data analysis of BES some new relations which can be used to search for the 1－+ exotic state in J/ψ→ωX,X→KKπ have been obtained.How to search for the 1－+ exotic state in the three-step two-body hadronic decay process J...
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