1996 Vol. 13, No. 2
Display Method:
1996, 13(2): 4-6.
doi: 10.11804/NuclPhysRev.13.02.004
Abstract:
The recent results on the studies of nuclear properties in exotic conditions are briefly presented.These studies include high spin states and nuclei far from the β stability line.
The recent results on the studies of nuclear properties in exotic conditions are briefly presented.These studies include high spin states and nuclei far from the β stability line.
1996, 13(2): 7-8.
doi: 10.11804/NuclPhysRev.13.02.007
Abstract:
The brief review for the advances and future plans of theoretical and experimental studies on the fission mechanisms is given.
The brief review for the advances and future plans of theoretical and experimental studies on the fission mechanisms is given.
1996, 13(2): 9-12.
doi: 10.11804/NuclPhysRev.13.02.009
Abstract:
We emphasize that to develop a fundamental nuclear theory one has to consider various non nucleon degrees of freedom in nuclei and to make the theory relatvistic.A three step ABC Plan for this Purpose is proposed. The A pan is to reform the relatiivistic hadron field theory by taking the finite baryon size into account. We call finite size baryons atoms in contrast with points. The fundamental nuclear theory in this form is therefore a quantum atom dynamics(QAD). The B plan is to reform the...
We emphasize that to develop a fundamental nuclear theory one has to consider various non nucleon degrees of freedom in nuclei and to make the theory relatvistic.A three step ABC Plan for this Purpose is proposed. The A pan is to reform the relatiivistic hadron field theory by taking the finite baryon size into account. We call finite size baryons atoms in contrast with points. The fundamental nuclear theory in this form is therefore a quantum atom dynamics(QAD). The B plan is to reform the...
1996, 13(2): 13-15.
doi: 10.11804/NuclPhysRev.13.02.013
Abstract:
In this paper,the importance of nuclear reaction research and nuclear data measurement is illutrated, and the neutron experiments on the 4.5MV Van de Graaff accelerator, at Peking University are briefly introduced.
In this paper,the importance of nuclear reaction research and nuclear data measurement is illutrated, and the neutron experiments on the 4.5MV Van de Graaff accelerator, at Peking University are briefly introduced.
1996, 13(2): 16-19.
doi: 10.11804/NuclPhysRev.13.02.016
Abstract:
The recent progress is presented concerning some studies on the mechanisms of nuclear reactions induced by heavy ions at the department of technical physics of Peking University.
The recent progress is presented concerning some studies on the mechanisms of nuclear reactions induced by heavy ions at the department of technical physics of Peking University.
1996, 13(2): 20-22.
doi: 10.11804/NuclPhysRev.13.02.020
Abstract:
Some recent studies on the low energy experimental nuclear physics and its applications at the Department of Technicsal Physics and the Institute of Heavy Ion Physics of Peking University are beiefly introduced in this paper.
Some recent studies on the low energy experimental nuclear physics and its applications at the Department of Technicsal Physics and the Institute of Heavy Ion Physics of Peking University are beiefly introduced in this paper.
1996, 13(2): 23-25.
doi: 10.11804/NuclPhysRev.13.02.023
Abstract:
The accelerator mass spectrometry studied by the Institute of Heavy Ion Physics and the Department of Technical Physics,Peking University,was successfully manufactured in 1992.In the two years routine operation,the machine performances have been improved and some application achievements have been obtained.In this paper feature of the machine,opeartion and some applications are given.
The accelerator mass spectrometry studied by the Institute of Heavy Ion Physics and the Department of Technical Physics,Peking University,was successfully manufactured in 1992.In the two years routine operation,the machine performances have been improved and some application achievements have been obtained.In this paper feature of the machine,opeartion and some applications are given.
1996, 13(2): 26-27.
doi: 10.11804/NuclPhysRev.13.02.026
Abstract:
The research progress of superconduting cavity made in Chinese Niobium,with the emphasis on the quality improvement of the Niobium andcorresponding superconducting cavity are introduced. The designing of the cavity geometry, analysing of the RF property of the Niobium as well as its mechanical quality are described. Special procedure of the cavity fabricating and its post processing are set. Experimentally, we got the gradient of 10MV/m and the quality factor of 10 9 at 2.5K.
The research progress of superconduting cavity made in Chinese Niobium,with the emphasis on the quality improvement of the Niobium andcorresponding superconducting cavity are introduced. The designing of the cavity geometry, analysing of the RF property of the Niobium as well as its mechanical quality are described. Special procedure of the cavity fabricating and its post processing are set. Experimentally, we got the gradient of 10MV/m and the quality factor of 10 9 at 2.5K.
1996, 13(2): 28-30.
doi: 10.11804/NuclPhysRev.13.02.028
Abstract:
A DC high brigytness laser driven by photoemissive electron gun is being developed at Peking University,in order to produce 50～100ps electron bunches of high quality.The gun consists of a photocathode preparation chamber and a DC acceleration cavity.Different ways of fabricating photocathode,such as chemical vapor deposition,ion beam implantation and ion beam enhanced deposition,can be adopted.The acceleration gap is designed with the aid of simulation codes EGUN and POISSON,100kV DC high voltage is...
A DC high brigytness laser driven by photoemissive electron gun is being developed at Peking University,in order to produce 50～100ps electron bunches of high quality.The gun consists of a photocathode preparation chamber and a DC acceleration cavity.Different ways of fabricating photocathode,such as chemical vapor deposition,ion beam implantation and ion beam enhanced deposition,can be adopted.The acceleration gap is designed with the aid of simulation codes EGUN and POISSON,100kV DC high voltage is...
1996, 13(2): 31-33.
doi: 10.11804/NuclPhysRev.13.02.031
Abstract:
The advances and achievements of studies on an integral split ring (ISR) RFQ accelerator for heavy ions at Peking University are presented in this paper.These include beam dynamics of RFQ accelerator,RF characteristics of RFQ cavity and studies of technological design.A 26MHz Prototype ISR RFQ resonator has been built .The voltage of 82kV between the electrodes and the acceleration of N + beam from 20keV to 300 keV have been achieved.These have proed the feasibility and advantage of this...
The advances and achievements of studies on an integral split ring (ISR) RFQ accelerator for heavy ions at Peking University are presented in this paper.These include beam dynamics of RFQ accelerator,RF characteristics of RFQ cavity and studies of technological design.A 26MHz Prototype ISR RFQ resonator has been built .The voltage of 82kV between the electrodes and the acceleration of N + beam from 20keV to 300 keV have been achieved.These have proed the feasibility and advantage of this...
1996, 13(2): 34-36.
doi: 10.11804/NuclPhysRev.13.02.034
Abstract:
A tentative plan of accelerating negative and positive ions with equal q/m in a RFQ accelerator at the same time is introudced,its feasibility in principle and draft tests are also given.
A tentative plan of accelerating negative and positive ions with equal q/m in a RFQ accelerator at the same time is introudced,its feasibility in principle and draft tests are also given.
1996, 13(2): 37-39.
doi: 10.11804/NuclPhysRev.13.02.037
Abstract:
The 5SDH 2 1.7MV tandem,EN 6MV tandem and PKU 4.5 Van de Graff have been operated in succession at Institute of Heavy Ion Physics,Peking University since 1987.The fuction,application and improvment work of the machinces are described separatly in this paper.
The 5SDH 2 1.7MV tandem,EN 6MV tandem and PKU 4.5 Van de Graff have been operated in succession at Institute of Heavy Ion Physics,Peking University since 1987.The fuction,application and improvment work of the machinces are described separatly in this paper.
1996, 13(2): 40-41.
doi: 10.11804/NuclPhysRev.13.02.040
Abstract:
Two kinds of permanent magnet PIG ion sources are introduced, which can be used for direct extracting negative ions of the elements with larger elctron affinity, such as H, C, O, F etc. By using LaB 6 cathodes and at saturation extraction voltage, 130 μA of O - and 75 μA of F - ions were extracted from the side extraction PIG ion source, its power consumption is 110 and 280W, respectively, and for end extraction PIG ion source, 50μA of H -, 1～2mA of O - and F - ion beam have been...
Two kinds of permanent magnet PIG ion sources are introduced, which can be used for direct extracting negative ions of the elements with larger elctron affinity, such as H, C, O, F etc. By using LaB 6 cathodes and at saturation extraction voltage, 130 μA of O - and 75 μA of F - ions were extracted from the side extraction PIG ion source, its power consumption is 110 and 280W, respectively, and for end extraction PIG ion source, 50μA of H -, 1～2mA of O - and F - ion beam have been...
1996, 13(2): 42-44.
doi: 10.11804/NuclPhysRev.13.02.042
Abstract:
The paper briefly describes the design of the beam pulsing system for the 600 kV DC accelerator, the beam dynamics calculations, the property measurements for the buncher cavity, the relevant rf electronics system and the initial beam loading experiments for the buncher.
The paper briefly describes the design of the beam pulsing system for the 600 kV DC accelerator, the beam dynamics calculations, the property measurements for the buncher cavity, the relevant rf electronics system and the initial beam loading experiments for the buncher.
1996, 13(2): 45-46.
doi: 10.11804/NuclPhysRev.13.02.045
Abstract:
By using liquid nitrogen cooling of sputtered atoms in flowing gas, a cluster machine has been designed. With the machine, kinds of metal and metalnitride clusters have been successfully generated. Cu cluster s micro structure has been studied. Micrography and electron diffraction of different size Cu clusters show:Cu clusters smaller than 8nm in diameter are amorphous,Cu tu culsters larger than 8nm in diameter are in crystal form. Lattice constant of Cu cluster is ...
By using liquid nitrogen cooling of sputtered atoms in flowing gas, a cluster machine has been designed. With the machine, kinds of metal and metalnitride clusters have been successfully generated. Cu cluster s micro structure has been studied. Micrography and electron diffraction of different size Cu clusters show:Cu clusters smaller than 8nm in diameter are amorphous,Cu tu culsters larger than 8nm in diameter are in crystal form. Lattice constant of Cu cluster is ...
1996, 13(2): 47-49.
doi: 10.11804/NuclPhysRev.13.02.047
Abstract:
The development of high dose ion implantation and high energy ion implantation at the Ion Beam Application Group of IHIP in recent years is reviewed.
The development of high dose ion implantation and high energy ion implantation at the Ion Beam Application Group of IHIP in recent years is reviewed.
1996, 13(2): 50-52.
doi: 10.11804/NuclPhysRev.13.02.050
Abstract:
The work done in recent years at 1 7MV tandem in Lab. of Nuclear and Technology, Peking University, including recent work on heavy ion induced X ray emission, quasi molecular vacancy sharing, alingment effect and cluster beam effect of multi ionization, are briefly summaried.
The work done in recent years at 1 7MV tandem in Lab. of Nuclear and Technology, Peking University, including recent work on heavy ion induced X ray emission, quasi molecular vacancy sharing, alingment effect and cluster beam effect of multi ionization, are briefly summaried.
1996, 13(2): 53-54.
doi: 10.11804/NuclPhysRev.13.02.053
Abstract:
The progress and some recent studies on H and He impurity behaviour in the materials at 5SDH-2 Pelletron are briefly described.
The progress and some recent studies on H and He impurity behaviour in the materials at 5SDH-2 Pelletron are briefly described.
1996, 13(2): 55-56.
doi: 10.11804/NuclPhysRev.13.02.055
Abstract:
The study on some applications of γ irradiation and ion implantation technology in modification of polymeric materials is briefly summerilzed. The main results obtained recently in our lab. on modification of engineering plastics, bioengineering and biomedical polymers by γ irradiation and biomedical materials by ion implantation are given.
The study on some applications of γ irradiation and ion implantation technology in modification of polymeric materials is briefly summerilzed. The main results obtained recently in our lab. on modification of engineering plastics, bioengineering and biomedical polymers by γ irradiation and biomedical materials by ion implantation are given.
1996, 13(2): 57-59.
doi: 10.11804/NuclPhysRev.13.02.057
Abstract:
This paper introduces the research and development of the SPECT and its imaging research, the basic parts, performances and clinical software in the newly researched and developed SPECT system. The suggestions on the further improvement upon the resolution and sensitivity of the SPECT and the application in the computer simulation in the SPECT researches are also made for improving the quality of SPECT imaging.
This paper introduces the research and development of the SPECT and its imaging research, the basic parts, performances and clinical software in the newly researched and developed SPECT system. The suggestions on the further improvement upon the resolution and sensitivity of the SPECT and the application in the computer simulation in the SPECT researches are also made for improving the quality of SPECT imaging.
1996, 13(2): 60-61.
doi: 10.11804/NuclPhysRev.13.02.060
Abstract:
The labeling of anti tumor monoclonalantibodies (McAB) with radionuclides has been regarded as our main aim in the past 12 years. A procedure of preparation of ultrapure carrier free 111 In has been developed. Anti tumor McABs labeled with 111 In via a bifunctional conjugating agent (DTPA cycloanhydride) were used successfully in clinical trials. 99m Tc labeled McAB fragments prepared by a direct method were also proved very powerful in diagnosis of gastric carcinoma...
The labeling of anti tumor monoclonalantibodies (McAB) with radionuclides has been regarded as our main aim in the past 12 years. A procedure of preparation of ultrapure carrier free 111 In has been developed. Anti tumor McABs labeled with 111 In via a bifunctional conjugating agent (DTPA cycloanhydride) were used successfully in clinical trials. 99m Tc labeled McAB fragments prepared by a direct method were also proved very powerful in diagnosis of gastric carcinoma...
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