1994 Vol. 11, No. 4
Display Method:
1994, 11(4): 3-4.
doi: 10.11804/NuclPhysRev.11.04.003
Abstract:
A brief description for the recent projects and the advances of theoretical studies in theoretical division of Shanghai institute of Nuclear Research (SINR) are given.
A brief description for the recent projects and the advances of theoretical studies in theoretical division of Shanghai institute of Nuclear Research (SINR) are given.
1994, 11(4): 5-8.
doi: 10.11804/NuclPhysRev.11.04.005
Abstract:
The foundamental aspects of Gaussian orthogonal ensemble (GOE) level statistics and the asymptotic behavior of time dependent quantum chaotic system are described. It is shown that performing a decoupled transformation and taking an effective hamiltonian are the key points to elucidate the foundation of statistic description. The asymptotic behavior of quantum chaotic system can be described quantitively by the statistical well.
The foundamental aspects of Gaussian orthogonal ensemble (GOE) level statistics and the asymptotic behavior of time dependent quantum chaotic system are described. It is shown that performing a decoupled transformation and taking an effective hamiltonian are the key points to elucidate the foundation of statistic description. The asymptotic behavior of quantum chaotic system can be described quantitively by the statistical well.
1994, 11(4): 9-12.
doi: 10.11804/NuclPhysRev.11.04.009
Abstract:
More uncertainties in the studies about diagnosing Quark-gluon plasma (QGP) by use of high-energy photon are discussed upon the assumption of local thermal equilibrium as well as a comparison study for recent literature, it is found that some definite aspects of high-energy photons originating from ultra-reletivistic heavy-ion collision may be still extracted from the uncertainties. We suggest that the shape of the measurable overall inclusive transverse momentum spectre for high-energy photons may be ...
More uncertainties in the studies about diagnosing Quark-gluon plasma (QGP) by use of high-energy photon are discussed upon the assumption of local thermal equilibrium as well as a comparison study for recent literature, it is found that some definite aspects of high-energy photons originating from ultra-reletivistic heavy-ion collision may be still extracted from the uncertainties. We suggest that the shape of the measurable overall inclusive transverse momentum spectre for high-energy photons may be ...
1994, 11(4): 13-16.
doi: 10.11804/NuclPhysRev.11.04.013
Abstract:
In the framework of relativistic quantum hadron dynamical (QHD) theory,under semiclassical approximation and taking into vacuum fluctuation, a relativistic Vlasov equation (RVE) has been derived. Using RVE and considering other relativistic effects, we have studied the isovector dipole giant resonances built on ground state in spherical nuclei.The main results show that the resonance energies for each multipole are larger than those obtained from the non-relativistic classical Vlasov approach...
In the framework of relativistic quantum hadron dynamical (QHD) theory,under semiclassical approximation and taking into vacuum fluctuation, a relativistic Vlasov equation (RVE) has been derived. Using RVE and considering other relativistic effects, we have studied the isovector dipole giant resonances built on ground state in spherical nuclei.The main results show that the resonance energies for each multipole are larger than those obtained from the non-relativistic classical Vlasov approach...
1994, 11(4): 17-20.
doi: 10.11804/NuclPhysRev.11.04.017
Abstract:
The paper reviews the research activities at SINR on experimental nuclear physics. The studies have been focused on mechanism of nuclear reactions, neutron physics,properties of nuclear decay and nuclear structure. Brief introductions are given to the ongoing research projects and future plans in the field of research.
The paper reviews the research activities at SINR on experimental nuclear physics. The studies have been focused on mechanism of nuclear reactions, neutron physics,properties of nuclear decay and nuclear structure. Brief introductions are given to the ongoing research projects and future plans in the field of research.
1994, 11(4): 21-24.
doi: 10.11804/NuclPhysRev.11.04.021
Abstract:
In this paper the nuclear analysis techniques in the Shanghai Institute of Nuclear Research and their applications in material science have been briefly introduced. Progresses have been made during recent years in studies, in particular, on the surface collision dynamics, ion implantation defects, nanometer-scale materials and nanometer-processing,cluster and fullerene.
In this paper the nuclear analysis techniques in the Shanghai Institute of Nuclear Research and their applications in material science have been briefly introduced. Progresses have been made during recent years in studies, in particular, on the surface collision dynamics, ion implantation defects, nanometer-scale materials and nanometer-processing,cluster and fullerene.
1994, 11(4): 25-28.
doi: 10.11804/NuclPhysRev.11.04.025
Abstract:
Nanobiology studies biological structure and dynamics on nanometer scale, including processes such as repair, replication and regulation. At the same time, nanobiology is also extended to the fields of cellur coherence, nanoscale characterization and biocomputing and other nanoscale devices. A group of scanning probes microscopy at Shanghai institute of Nuclear Research has obtained many excellent results on nanobiology in recent years. This paper introduces the development of scanning probes...
Nanobiology studies biological structure and dynamics on nanometer scale, including processes such as repair, replication and regulation. At the same time, nanobiology is also extended to the fields of cellur coherence, nanoscale characterization and biocomputing and other nanoscale devices. A group of scanning probes microscopy at Shanghai institute of Nuclear Research has obtained many excellent results on nanobiology in recent years. This paper introduces the development of scanning probes...
1994, 11(4): 29-31.
doi: 10.11804/NuclPhysRev.11.04.029
Abstract:
The development of nuclear microprobe techniques provides a powerful means for micro-analysis in areas with micron scales. Great interest has been shown in the applications of the nuclear microprobe for investigating marine ores. Because the accumulations of marine ores, such as deep-sea ferromanganese nodules and seamount ferromanganese crusts,are very slow, about a few millimeters per million years, the ability of microscopic analysis of trace elements brings the nuclear microprobe...
The development of nuclear microprobe techniques provides a powerful means for micro-analysis in areas with micron scales. Great interest has been shown in the applications of the nuclear microprobe for investigating marine ores. Because the accumulations of marine ores, such as deep-sea ferromanganese nodules and seamount ferromanganese crusts,are very slow, about a few millimeters per million years, the ability of microscopic analysis of trace elements brings the nuclear microprobe...
1994, 11(4): 32-33.
doi: 10.11804/NuclPhysRev.11.04.032
Abstract:
This paper introduces mainly the important achievements obtained recently at SINR in application of neutron activation analysis in biological and environmental science.
This paper introduces mainly the important achievements obtained recently at SINR in application of neutron activation analysis in biological and environmental science.
1994, 11(4): 34-36.
doi: 10.11804/NuclPhysRev.11.04.034
Abstract:
A brief summary for the developments of cluster impact surface including sputtering, surface topography and the influence of topographical feature on the sputtering process, is presented.
A brief summary for the developments of cluster impact surface including sputtering, surface topography and the influence of topographical feature on the sputtering process, is presented.
1994, 11(4): 37-38.
doi: 10.11804/NuclPhysRev.11.04.037
Abstract:
Progress and the present status of the 6 MV tandem accelerator at SINR are described. The machine has been in operation since 1992 for experimental nuclear physics and applied nuclear physics studies. In particular, an AMS has been set up for 14C, 10Be and 26Al analysis of super high sensitivities.
Progress and the present status of the 6 MV tandem accelerator at SINR are described. The machine has been in operation since 1992 for experimental nuclear physics and applied nuclear physics studies. In particular, an AMS has been set up for 14C, 10Be and 26Al analysis of super high sensitivities.
1994, 11(4): 39-41.
doi: 10.11804/NuclPhysRev.11.04.039
Abstract:
An accelerator mass spectrometry facility has been installed on the 6MV tandem accelerator at SINR. The main features of the facility, its applications and improvements are described.
An accelerator mass spectrometry facility has been installed on the 6MV tandem accelerator at SINR. The main features of the facility, its applications and improvements are described.
1994, 11(4): 42-45.
doi: 10.11804/NuclPhysRev.11.04.042
Abstract:
The paper reviews the recent achievement of developing a mini-cyclotron mass spectrometer (AMS) for 14C dating, a key project supported by National Natural Science Foundation of China and Chinese Academy of Sciences. The background and significance of the project are briefed. Features of the novel machine, the criteria of its design, the new ideas and unique technical approaches in developing the system are described. Further efforts are being made to improve the mini-cyclotron AMS.
The paper reviews the recent achievement of developing a mini-cyclotron mass spectrometer (AMS) for 14C dating, a key project supported by National Natural Science Foundation of China and Chinese Academy of Sciences. The background and significance of the project are briefed. Features of the novel machine, the criteria of its design, the new ideas and unique technical approaches in developing the system are described. Further efforts are being made to improve the mini-cyclotron AMS.
1994, 11(4): 46-48.
doi: 10.11804/NuclPhysRev.11.04.046
Abstract:
Shanghai broadband free electron laser(FEL) user facility will be executed in three stages:start stage, earlier stage and later stage. The major goal is the development of a high brightness injector in the start stage. IR-FEL will be provided, including near-IR(2￣8μm), middle-IR (10￣ 25μm) and far-IR (200￣ 800μm) with peak power of 1 ￣ 10MW (micropulse ), average power of 1 ￣ 10kW (macropulse), spectrum width of 10-2￣5 ×10-3 during the earlier stage.
Shanghai broadband free electron laser(FEL) user facility will be executed in three stages:start stage, earlier stage and later stage. The major goal is the development of a high brightness injector in the start stage. IR-FEL will be provided, including near-IR(2￣8μm), middle-IR (10￣ 25μm) and far-IR (200￣ 800μm) with peak power of 1 ￣ 10MW (micropulse ), average power of 1 ￣ 10kW (macropulse), spectrum width of 10-2￣5 ×10-3 during the earlier stage.
1994, 11(4): 49-52.
doi: 10.11804/NuclPhysRev.11.04.049
Abstract:
several novel achievements of the frontier research on radiation chemistry of DNA, histones and fullerence etc. in SRCL are introduced. Using pulse radiolysis and laser flash photolysis techniques in combination with ESR studies charge transfer, excitation transfer and H-atom transfer process have been explored. The polyfunctional protection effect including radioprotection and scavenging oxy radical exerted by several kinds of naturally occurring phenolic antioxidants distributed among chinese ...
several novel achievements of the frontier research on radiation chemistry of DNA, histones and fullerence etc. in SRCL are introduced. Using pulse radiolysis and laser flash photolysis techniques in combination with ESR studies charge transfer, excitation transfer and H-atom transfer process have been explored. The polyfunctional protection effect including radioprotection and scavenging oxy radical exerted by several kinds of naturally occurring phenolic antioxidants distributed among chinese ...
1994, 11(4): 53-56.
doi: 10.11804/NuclPhysRev.11.04.053
Abstract:
Brief introduction is given to SINR s activities on the research, pilot test and applications of irradiation facilities and radiation-processed materials. The Shanghai Radiation Centre at SINR has built a complete set of irradiation facilities, which include a 1. 9 ×1018 Bq 60Co source and two EB accelerators of 0. 7￣ 1 MV, 20 mA and 1￣3 MV, 20 mA in energy and beam current respectively. The SINR-developed 60Co irradiation source and the 3MV, 20 mA EB accelerator have been installed in...
Brief introduction is given to SINR s activities on the research, pilot test and applications of irradiation facilities and radiation-processed materials. The Shanghai Radiation Centre at SINR has built a complete set of irradiation facilities, which include a 1. 9 ×1018 Bq 60Co source and two EB accelerators of 0. 7￣ 1 MV, 20 mA and 1￣3 MV, 20 mA in energy and beam current respectively. The SINR-developed 60Co irradiation source and the 3MV, 20 mA EB accelerator have been installed in...
1994, 11(4): 57-58.
doi: 10.11804/NuclPhysRev.11.04.057
Abstract:
Dynamitrons provide high energy electron beams for industrial applications.SINR succeeded in developing a 3MV, 20mA dynamitron, which has been installed in several cable factories in China. The paper describes in brief its principles of acceleration, specifications of the system, and the technical approaches in constructing the machine. Efforts are being made to upgrade the module.
Dynamitrons provide high energy electron beams for industrial applications.SINR succeeded in developing a 3MV, 20mA dynamitron, which has been installed in several cable factories in China. The paper describes in brief its principles of acceleration, specifications of the system, and the technical approaches in constructing the machine. Efforts are being made to upgrade the module.
1994, 11(4): 59-63.
doi: 10.11804/NuclPhysRev.11.04.059
Abstract:
Radiopharmaceuticals is an index of the modern medicine and a high-tech industry. The current status and market trend of the radiopharmaceuticals are discussed in detail. The establishment of the Shanghai Joint R/D Center of Radiopharmaceuticals, under the Chinese Academy of Sciences and the State Administration of Pharmaceuticals of China,will greatly promote the research, development and industrilization of the cyclotron-based radiopharmaceuticals for the SPECT and PET applications.
Radiopharmaceuticals is an index of the modern medicine and a high-tech industry. The current status and market trend of the radiopharmaceuticals are discussed in detail. The establishment of the Shanghai Joint R/D Center of Radiopharmaceuticals, under the Chinese Academy of Sciences and the State Administration of Pharmaceuticals of China,will greatly promote the research, development and industrilization of the cyclotron-based radiopharmaceuticals for the SPECT and PET applications.
1994, 11(4): 64-66.
doi: 10.11804/NuclPhysRev.11.04.064
Abstract:
The research activities of industrial computerized tomography (ICT) at SINR is described. Because of its superior qualities in spatial and density resolutions, ICT has been and will be widely used in non-destructive test, quality evaluation and process control.
The research activities of industrial computerized tomography (ICT) at SINR is described. Because of its superior qualities in spatial and density resolutions, ICT has been and will be widely used in non-destructive test, quality evaluation and process control.
1994, 11(4): 67-68.
doi: 10.11804/NuclPhysRev.11.04.067
Abstract:
The methods and instrumentation of nuclear logging of oil wells are described.And its development at SINR is reported.
The methods and instrumentation of nuclear logging of oil wells are described.And its development at SINR is reported.
1994, 11(4): 69-72.
doi: 10.11804/NuclPhysRev.11.04.069
Abstract:
This paper introduces development and recent progress of fire alarm, combined fire-fighting controllers and intelligent building control system in Rihuan Instruments Factory, SINR.
This paper introduces development and recent progress of fire alarm, combined fire-fighting controllers and intelligent building control system in Rihuan Instruments Factory, SINR.
1994, 11(4): 73-78.
doi: 10.11804/NuclPhysRev.11.04.073
Abstract:
Research and development of ultrafiltration membrane and ultrafiltration sets developed at SINR are summarized. Specifications of several types of ultrafiltration sets,such as the pressurized tube module, plate and frame module, and spiral wound module, are introduced. And their applications in biochemistry, pharmacy and environmental protection are also reviewed.
Research and development of ultrafiltration membrane and ultrafiltration sets developed at SINR are summarized. Specifications of several types of ultrafiltration sets,such as the pressurized tube module, plate and frame module, and spiral wound module, are introduced. And their applications in biochemistry, pharmacy and environmental protection are also reviewed.
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