2003 Vol. 20, No. 3
Display Method:
2003, 20(3): 167-175.
doi: 10.11804/NuclPhysRev.20.03.167
Abstract:
Status of baryon spectroscopy and recent progress of the baryon program from J/Ψ decays at Beijing ElectronPositron Collider (BEPC) are briefly reviewed. Possible N* program at Lanzhou CSR is discussed.
Status of baryon spectroscopy and recent progress of the baryon program from J/Ψ decays at Beijing ElectronPositron Collider (BEPC) are briefly reviewed. Possible N* program at Lanzhou CSR is discussed.
2003, 20(3): 176-181.
doi: 10.11804/NuclPhysRev.20.03.176
Abstract:
Spectra and E2 transition rates for the eveneven 62-76Zn isotopes are studied in the framework of the interacting boson model. A schematic Hamiltonian capable of describing their spectra and transition is used. It is found that the eveneven 62-76Zn isotopes are in the transition from U(5) to O(6) dynamical symmetry.
Spectra and E2 transition rates for the eveneven 62-76Zn isotopes are studied in the framework of the interacting boson model. A schematic Hamiltonian capable of describing their spectra and transition is used. It is found that the eveneven 62-76Zn isotopes are in the transition from U(5) to O(6) dynamical symmetry.
2003, 20(3): 182-185.
doi: 10.11804/NuclPhysRev.20.03.182
Abstract:
Using modified delta interaction, enlarging the gds configuration space to include the 1h11/2 orbital with negativeparity, the deformed HartreeFock calculations for both nuclei: 101Pd and 101Ru are performed. Their groundstate and some excited configurations are obtained. The approximate angular momentum projected deform HartreeFock (PDHF) method is also applied to nuclei 101Pd and 101Ru, and both of their positive and negative parity bands are obtained...
Using modified delta interaction, enlarging the gds configuration space to include the 1h11/2 orbital with negativeparity, the deformed HartreeFock calculations for both nuclei: 101Pd and 101Ru are performed. Their groundstate and some excited configurations are obtained. The approximate angular momentum projected deform HartreeFock (PDHF) method is also applied to nuclei 101Pd and 101Ru, and both of their positive and negative parity bands are obtained...
2003, 20(3): 186-192.
doi: 10.11804/NuclPhysRev.20.03.186
Abstract:
The relationship between polarization observables and indepedent amplitudes, measurements of polarization observables and complete measurement for γN→πN′ are illustrated. The principle and structure of polarization nucleon solid targets, the principle of choosing target material and 4π detectors suitable for exclusive measurements are discussed. The polarization experiments and exclusive measurements are very singnificant for SLEGS.
The relationship between polarization observables and indepedent amplitudes, measurements of polarization observables and complete measurement for γN→πN′ are illustrated. The principle and structure of polarization nucleon solid targets, the principle of choosing target material and 4π detectors suitable for exclusive measurements are discussed. The polarization experiments and exclusive measurements are very singnificant for SLEGS.
2003, 20(3): 193-196.
doi: 10.11804/NuclPhysRev.20.03.193
Abstract:
One possible method of measurement of isotopic composition and mass for plutonium is discussed and its feasibility in theory is demonstrated by the MCNP4B package in this paper. The relative efficiency ratio curve for the container where the plutonium sample is put in can be computed by assigning an arbitrary γ ray source in the sample . Once the relative efficiency ratio for the container is known, the isotopic components for plutonium can be induced by assigning the real γ ray source in the sample and...
One possible method of measurement of isotopic composition and mass for plutonium is discussed and its feasibility in theory is demonstrated by the MCNP4B package in this paper. The relative efficiency ratio curve for the container where the plutonium sample is put in can be computed by assigning an arbitrary γ ray source in the sample . Once the relative efficiency ratio for the container is known, the isotopic components for plutonium can be induced by assigning the real γ ray source in the sample and...
2003, 20(3): 197-200.
doi: 10.11804/NuclPhysRev.20.03.197
Abstract:
A new experimental terminal is being constructed at HIRFL for research program of proton and heavy ion therapies and irradiation effects of living things . The beam preparation method and the layout, performance and beam optics calculation of the beam line are presented.
A new experimental terminal is being constructed at HIRFL for research program of proton and heavy ion therapies and irradiation effects of living things . The beam preparation method and the layout, performance and beam optics calculation of the beam line are presented.
2003, 20(3): 201-207.
doi: 10.11804/NuclPhysRev.20.03.201
Abstract:
Ion beam or electronbeam irradiation will lead to the change of material microstructure. By the use of facilities composed of an electron microscope and ion accelerator(s), the microstructure evolvement in material can be insitu studied during the irradiation and following annealing processes. The facilities have been widely used to study many kinds of materials, e.g. metal, alloy, ceramic materials and semiconductor, in the past twenty years. In this paper the development of the Accelerator and Electron ...
Ion beam or electronbeam irradiation will lead to the change of material microstructure. By the use of facilities composed of an electron microscope and ion accelerator(s), the microstructure evolvement in material can be insitu studied during the irradiation and following annealing processes. The facilities have been widely used to study many kinds of materials, e.g. metal, alloy, ceramic materials and semiconductor, in the past twenty years. In this paper the development of the Accelerator and Electron ...
2003, 20(3): 208-212.
doi: 10.11804/NuclPhysRev.20.03.208
Abstract:
A wave function for laser dressed atom is derived as a perturbative solution of the timedependent Schrdinger equation in the velocity gauge. With the use of the average excitation energy approximation and the closure approximation, the solution is reduced to a timedependent operator acting on the "bare" atomic state. In softphoton approximation, the average excitation energy only appears in the first and second order terms of field frequency. Such a simplified dressed wave function is useful in...
A wave function for laser dressed atom is derived as a perturbative solution of the timedependent Schrdinger equation in the velocity gauge. With the use of the average excitation energy approximation and the closure approximation, the solution is reduced to a timedependent operator acting on the "bare" atomic state. In softphoton approximation, the average excitation energy only appears in the first and second order terms of field frequency. Such a simplified dressed wave function is useful in...
2003, 20(3): 213-217.
doi: 10.11804/NuclPhysRev.20.03.213
Abstract:
A new detection technique--age momentum correlation in international positron field is reviewed. The recent development is described and the analysis methods are discussed for the technique. The application of the technique in the positronium formation and thermalization processes are systematically summarized. Besides the application of the technique in Ps chemistry is discussed.
A new detection technique--age momentum correlation in international positron field is reviewed. The recent development is described and the analysis methods are discussed for the technique. The application of the technique in the positronium formation and thermalization processes are systematically summarized. Besides the application of the technique in Ps chemistry is discussed.
2003, 20(3): 218-221.
doi: 10.11804/NuclPhysRev.20.03.218
Abstract:
After embryo of wheat seed was right implanted by 110 keV 56Fe1+ions, the seed was broken into two parts by hand along its abdomen trench to form two crosssections. A halfseed was pasted on a metal holder in keeping the crosssection upwards horizontal. Spot analyses were carried out from embryo surface towards depth on the crosssection under SEM and the intensity of characteristic X rays induced by electrons in Fe elements of the embryo was measured. From this, the maximum range of the ionsi...
After embryo of wheat seed was right implanted by 110 keV 56Fe1+ions, the seed was broken into two parts by hand along its abdomen trench to form two crosssections. A halfseed was pasted on a metal holder in keeping the crosssection upwards horizontal. Spot analyses were carried out from embryo surface towards depth on the crosssection under SEM and the intensity of characteristic X rays induced by electrons in Fe elements of the embryo was measured. From this, the maximum range of the ionsi...
2003, 20(3): 222-225.
doi: 10.11804/NuclPhysRev.20.03.222
Abstract:
In the general case the spectral distribution and the radiation frequency are derived for the spontaneous radiation of charged particles. The quasichanneling radiation is described by using a sinesquare potential, and point out that the quasichanneling radiation is related directly to the rotation periodic solution; The properties of the phase plane and the possible model approaching to chaos for the system is analyzed.
In the general case the spectral distribution and the radiation frequency are derived for the spontaneous radiation of charged particles. The quasichanneling radiation is described by using a sinesquare potential, and point out that the quasichanneling radiation is related directly to the rotation periodic solution; The properties of the phase plane and the possible model approaching to chaos for the system is analyzed.
2003, 20(3): 226-230.
doi: 10.11804/NuclPhysRev.20.03.226
Abstract:
In file 5 of ENDF VI, the arbitrary tabulated function (L=1) was applied to some threshold reactions of some nuclides. The energy distribution of secondary spectrum was given approximately as a triangular shape or rectangular shape at the threshold energy for some nuclides. The triangular shape distributions would cause twopeaked energy distribution near the threshold energy, which must affect the group transfer matrix. The rectangular shape make the E′n too large, that may lead to...
In file 5 of ENDF VI, the arbitrary tabulated function (L=1) was applied to some threshold reactions of some nuclides. The energy distribution of secondary spectrum was given approximately as a triangular shape or rectangular shape at the threshold energy for some nuclides. The triangular shape distributions would cause twopeaked energy distribution near the threshold energy, which must affect the group transfer matrix. The rectangular shape make the E′n too large, that may lead to...
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