1988 Vol. 12, No. 6
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Abstract:
A method is described for measuring the beta spectrum from tritium decay in order to determine the electron-antineutrino rest mass.This method includes an electrostatic spherical grid retarding spectrometer with a post focusing system.The resultant e...
A method is described for measuring the beta spectrum from tritium decay in order to determine the electron-antineutrino rest mass.This method includes an electrostatic spherical grid retarding spectrometer with a post focusing system.The resultant e...
Abstract:
In this paper a vertical beam position monitor with split ionization chamber for synchrotron radiation is described.It can be used to detect vertical beam position and relative total intensity at the same time without obstructing the beam.The convent...
In this paper a vertical beam position monitor with split ionization chamber for synchrotron radiation is described.It can be used to detect vertical beam position and relative total intensity at the same time without obstructing the beam.The convent...
Abstract:
Using an Approximate energy conservation method,a Monte-Carlo generator which produces exclusive processes of Chou-Yang geometrical model is constructed.Various comparisons with experimental data have been done conveniently with the help of this gene...
Using an Approximate energy conservation method,a Monte-Carlo generator which produces exclusive processes of Chou-Yang geometrical model is constructed.Various comparisons with experimental data have been done conveniently with the help of this gene...
Abstract:
Vacuum solutions of Dirac's equations in a R-W nuiverse.The exact solution n=n/a for m=0 and the solution n=m+n/a for m≠0 are shown to be generalized results of the an earlier work.These solutions can be interpreted as conformal vacuum or adiabatic v...
Vacuum solutions of Dirac's equations in a R-W nuiverse.The exact solution n=n/a for m=0 and the solution n=m+n/a for m≠0 are shown to be generalized results of the an earlier work.These solutions can be interpreted as conformal vacuum or adiabatic v...
Abstract:
We discuss in detail the combination rule of quarks controled by the nearest correlation in rapidity.The average yields of mesons,baryons and the multiplicity distribution produced by stochastic accumulation of N pairs of quarks have been given.Using...
We discuss in detail the combination rule of quarks controled by the nearest correlation in rapidity.The average yields of mesons,baryons and the multiplicity distribution produced by stochastic accumulation of N pairs of quarks have been given.Using...
Abstract:
The behavior of the π-meson distribution amplitude is discussed through a phenomenological analysis of some exclusive processes in QCD sum rule.Fπ(Q2) and Br(χ→2π) are calculated by using a trial distribution amplitude.The result of Fπ(Q2) is compati...
The behavior of the π-meson distribution amplitude is discussed through a phenomenological analysis of some exclusive processes in QCD sum rule.Fπ(Q2) and Br(χ→2π) are calculated by using a trial distribution amplitude.The result of Fπ(Q2) is compati...
Abstract:
In this paper we introduce the annihilation terms decribing transitions qiqi→qjqj and qiqi→(gg) and consider the SU(3) breaking effect for these terms.We discuss the mixing mechanism of η,η′and ι and obtain the quark and gluon content of η,η′and ι.At...
In this paper we introduce the annihilation terms decribing transitions qiqi→qjqj and qiqi→(gg) and consider the SU(3) breaking effect for these terms.We discuss the mixing mechanism of η,η′and ι and obtain the quark and gluon content of η,η′and ι.At...
Abstract:
Heavy mesons are studied with the Relativistic two body equation.Mass spectrum and the leptonic decay widths of heavy mesons are calculated for potentials of power and logarithmic type.
Heavy mesons are studied with the Relativistic two body equation.Mass spectrum and the leptonic decay widths of heavy mesons are calculated for potentials of power and logarithmic type.
Abstract:
This paper discussed the conformal transformation between the Witten's string field interacting picture and other pictures.Two kinds of different interacting pictures and explicit forms of their vertex operators are given.One of them can not relate t...
This paper discussed the conformal transformation between the Witten's string field interacting picture and other pictures.Two kinds of different interacting pictures and explicit forms of their vertex operators are given.One of them can not relate t...
Abstract:
Owing to the change of the path-integral measure for fermion fields under chiral transformation,an additional term (we called it the chiral anomalous term) is added to the action of generating functional of the pure gauge fields theories on coset spa...
Owing to the change of the path-integral measure for fermion fields under chiral transformation,an additional term (we called it the chiral anomalous term) is added to the action of generating functional of the pure gauge fields theories on coset spa...
Abstract:
We consider the transformation properties of the system with non-invariance action integral under the infinite continuous group which yields the generalized Noether's identities,from which we can deduce the strong and weak conservation laws of this s...
We consider the transformation properties of the system with non-invariance action integral under the infinite continuous group which yields the generalized Noether's identities,from which we can deduce the strong and weak conservation laws of this s...
Abstract:
We show that two models in explaining the EMC effect give different results and predictions,though both of them are using certain ways to take into account the binding effect.The first can explain the bulk of the EMC effect only,whereas the second ca...
We show that two models in explaining the EMC effect give different results and predictions,though both of them are using certain ways to take into account the binding effect.The first can explain the bulk of the EMC effect only,whereas the second ca...
Abstract:
Some probiems relating to the beam dynamics computation of the transverse motion for the 35MeV Beijing Proton Linac are discussed.The computation results are used in the beam test of the linac and whereby the suitability and relibility of the computa...
Some probiems relating to the beam dynamics computation of the transverse motion for the 35MeV Beijing Proton Linac are discussed.The computation results are used in the beam test of the linac and whereby the suitability and relibility of the computa...
Abstract:
The real relativistic microscopic optical potentials for 16O and 40Ca have been calculated self-consistently in the framework of the Walecka model and the non-linear σ model.To compare with nonrelativistic optical potentials,the Schrodinger equivalen...
The real relativistic microscopic optical potentials for 16O and 40Ca have been calculated self-consistently in the framework of the Walecka model and the non-linear σ model.To compare with nonrelativistic optical potentials,the Schrodinger equivalen...
Abstract:
The seniority v-structure and the K-structure of the CSM wave function for odd particlenumber system are analysed.For not too high ω (hω≤0.5MeV) configurations with v=1,3,5 are dominant for the low-lying bands,while those with v≥7 are negligibly smal...
The seniority v-structure and the K-structure of the CSM wave function for odd particlenumber system are analysed.For not too high ω (hω≤0.5MeV) configurations with v=1,3,5 are dominant for the low-lying bands,while those with v≥7 are negligibly smal...
Abstract:
The characteristics of nuclear reactions with giant resonances as door-way states is discussed.The Feshbach-Kerman-Koonin theory is modified properly and used to derive the cross section formula of multi-step compound nuclear reactions with resonance...
The characteristics of nuclear reactions with giant resonances as door-way states is discussed.The Feshbach-Kerman-Koonin theory is modified properly and used to derive the cross section formula of multi-step compound nuclear reactions with resonance...
Abstract:
A microscopic calculation of 15O-15N,17F-17O Coulomb displacement energies is performed from the Paris potential and electric magnetic interactions using Green's function method.The contribution of charge-symmetry-breaking property of the G matrix is...
A microscopic calculation of 15O-15N,17F-17O Coulomb displacement energies is performed from the Paris potential and electric magnetic interactions using Green's function method.The contribution of charge-symmetry-breaking property of the G matrix is...
Abstract:
The excitation function for α transfer reaction 28Si(16O,C)S ha< sup="">s been s< sup="">tudied.A coupling channel theory with molecular states has been constructed with linear combination of nuclear orbits.The calculated result is in good agreement with experiment da...
The excitation function for α transfer reaction 28Si(16O,C)S ha< sup="">s been s< sup="">tudied.A coupling channel theory with molecular states has been constructed with linear combination of nuclear orbits.The calculated result is in good agreement with experiment da...
Abstract:
The experimental data of the capture and complete fusion cross section for 35Cl,40,43Ca+238U system are fitted by using the Extrapush Model.In consideration of the competition between the fission and neutron evaporation,the excitation functions of th...
The experimental data of the capture and complete fusion cross section for 35Cl,40,43Ca+238U system are fitted by using the Extrapush Model.In consideration of the competition between the fission and neutron evaporation,the excitation functions of th...
Abstract:
The variances of the mass distribution,also neutron-protion correlation function for the collision systems of single closed shell nuclei 144m+144m and no closed shell nuclei 154Sm+154Sm have been calculated by use of the master equation coupling with...
The variances of the mass distribution,also neutron-protion correlation function for the collision systems of single closed shell nuclei 144m+144m and no closed shell nuclei 154Sm+154Sm have been calculated by use of the master equation coupling with...
Abstract:
A mean-field theory is used to study the chiral phase transition at finite temperature.The critical temperature and the phase diagram are obtained.
A mean-field theory is used to study the chiral phase transition at finite temperature.The critical temperature and the phase diagram are obtained.
Abstract:
The field theory limit of superstring theories in ten dimensions suggests a compactification on the Calabi-Yau manifolds.The authors present a cosmological inflation solution of this scenario to which a matter term is added.
The field theory limit of superstring theories in ten dimensions suggests a compactification on the Calabi-Yau manifolds.The authors present a cosmological inflation solution of this scenario to which a matter term is added.
Abstract:
Through a covariant regularization of the chiral fermion current,we derive the covariant fermion current divergence anomaly as well as the covariant Gauss law commutator anomaly of the chiral gauge theory in the canonichl formalism.
Through a covariant regularization of the chiral fermion current,we derive the covariant fermion current divergence anomaly as well as the covariant Gauss law commutator anomaly of the chiral gauge theory in the canonichl formalism.
Abstract:
We propose a model for the calculation of the inclusive eta production reaction induced by pion.The comparison between our theory and the experiments shows that the η particle emission in π-A collisions is a process of surface production.
We propose a model for the calculation of the inclusive eta production reaction induced by pion.The comparison between our theory and the experiments shows that the η particle emission in π-A collisions is a process of surface production.
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