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1995 Vol. 12, No. 3

Nuclear Physics
Exotic Decay Processes for Hot Nuclei
Wu En-jiu
1995, 12(3): 1-6. doi: 10.11804/NuclPhysRev.12.03.001
Abstract:
Possible existence of the exotic density shapes-the formation of nuclear bubbles and rings-in the domain of intermediate energy heavy ion collisions have been briefly reviewed. Some experimental consequences were dicussed.
New Heavy Neutron-rich Isotope 239Pa
Zhang Xue-qian, Yuan Shuang-gui, Yan Wei-fan, Mo Wan-tong, Li Zong-wei, Yu Xian
1995, 12(3): 7-8. doi: 10.11804/NuclPhysRev.12.03.007
Abstract(1566) PDF (632KB)(489)
Abstract:
This paper reports that the new heavy neutron-rich isotope 239Pa has been observed for the first time and its half life has been determined to be 106±30min.
Two-temperature Emission of Relativisticα particles
Liu Fu-hu
1995, 12(3): 9-13. doi: 10.11804/NuclPhysRev.12.03.009
Abstract:
An explanation on the two-temperature emission of relativistic a particles in high energy nucleus-nucleus collsisions is presented. The angular distributions of a particles are obtained and compared with the exprimental results of 2. 1GeV/u 16O-Em and 1. 7GeV/u 56Fe-Em interactions.
Correlation of Moments in Nuclear Fragmentation at High Energy
Liu Fu-hu, Sun Han-cheng
1995, 12(3): 14-17. doi: 10.11804/NuclPhysRev.12.03.014
Abstract:
The conditional moments of the charge distributions of the projectile fragments in 16O and 32S fragmentation behavior are botanied by using a partition method. The logarithmic correlations between the conditional are observed. The electromagnetic dissociations are similar to nuclear reactions for correlation behaviour itself and the correlation her behaviours for oxygen nuclei are in agreement with that for sufphur nuclei. The calculated results in agreement with the...
Clustering Property of Nucleus
Wei Zhi-yong, Zhu Yong-tai
1995, 12(3): 18-21. doi: 10.11804/NuclPhysRev.12.03.018
Abstract:
Clustering phenomena exist in all the field of the nucleus. In this paper the development of the cluster model and its use in nuclear structure, nuclear radioactivity, and nuclear reactions are described.
Nuclear Level Density Phenomenological Expressions and Its Parameters
Qiu Guo-chun
1995, 12(3): 22-26. doi: 10.11804/NuclPhysRev.12.03.022
Abstract:
A discussion on the neuclear level desity phenomenological formulae originates from the Fermi-gas model formula considering the shell effects,pairing correlations and collectivity of the nuclei.
Electron Cooling
Rao Yi-nong, Xia Jia-wen, Yuan You-jin, Wei Bao-wen
1995, 12(3): 27-30. doi: 10.11804/NuclPhysRev.12.03.027
Abstract:
This paper briefly describes the principle of electron cooling and the current status.
Theoretical Calculation of inelastic Fast Neutron Scattering on 11B
Xie Wen-fang, Ruan Wen-ying
1995, 12(3): 31-33. doi: 10.11804/NuclPhysRev.12.03.031
Abstract(1897) PDF (967KB)(504)
Abstract:
BY using the direct reaction mode and the DWBA theory, We calculate the integrated sections and angular distributions of inelastic neutron scattering of 11B(n, n )11B 2. 14MeV excited state in energy range from 7. 54MeV to 20. 0MeV. The calculated results are comparaed with the experimental values, and a good agreement has been obtained. The theory values are given for absent experimental data.
Application of Nuclear Technology
Application of Total-reflection X-ray Fluorescence Analysis
Tian Yuhong, Wang Ruiguang, Tan Ji-lian
1995, 12(3): 34-39. doi: 10.11804/NuclPhysRev.12.03.034
Abstract:
In recent years a remarkable development has been achieved in total-reflection X-ray fluorescence (TXRF) analysis techniques. The trace and ulera-trace analysis of elements has been made out from surface and near-surface layer to depth and depth profiling as well as layered structures. Absolute detectoion limits has come to pg-level and the least detection limits of 108atoms/cm2 can be reached for surface contamination on St wafers. The basic theory, characteristic, recent...
Space Radiation Effects
Li Shi-qing, Yan He-ping
1995, 12(3): 40-42. doi: 10.11804/NuclPhysRev.12.03.040
Abstract:
This paper briefly dicusses the radiation environment in near-earth space and it s influences on material, and electronic devices using in space airship, also, the research developments in space radiation effects are introduced.
Situation of Radiation Curing
Jia Shao-jin, Zhou Cai-hui
1995, 12(3): 43-45. doi: 10.11804/NuclPhysRev.12.03.043
Abstract:
The radiation curing is a new and advanced technology which has some advantages, several products were made. Equipment of the field has been improved.
Wheel Device for Transporting Short-lived Nuclei
Zhou Shu-hua, Li Jing-wen, Dong Zhi-qiang, Zeng Xian-tang, Huo Hua
1995, 12(3): 46-47. doi: 10.11804/NuclPhysRev.12.03.046
Abstract(1930) PDF (621KB)(410)
Abstract:
A wheel device for transporting short-lived nuclei has been constructed at the HI-13 tandem accelerator of CIAE. The device can be used in the identification and investigation of nuclides with life-times as short as a few seconds. With the aid of this device a new nutron-deficient nuclide 90Ru has been identified. Its half-life and decay γ-rays have been measured.
Application and Development of Numerical Simulating Methods in Nuclear Well Logging
Fang Ying-dong, He Qing-yuan, Xie Zhong-sheng, Yin Banghua
1995, 12(3): 48-54. doi: 10.11804/NuclPhysRev.12.03.048
Abstract:
The application of the numerical simulating methods in the nuclear well Logging is presented. Practical examples show that the data calculated with theoritical methods agree with the experimental data. This showes the great importance of the theoritical methods in the nuclear well Logging.
Development of Superthin Epitaxial Silicon Detectors
Wang Zhu-sheng, Chao Zhi-yuan, Xu Jin-lan
1995, 12(3): 55-57. doi: 10.11804/NuclPhysRev.12.03.055
Abstract(2363) PDF (989KB)(466)
Abstract:
The epitaxial st-dE/dX surface barrier detectors with an active area of 28~154mm2 and thickness of 5. 2~10μm have been developed. This kind of detector can be used for measuring α-particle, proton with low energy and for distinguishing particles...
X-ray Diagnostic in Gas Discharge
Chen Su-he, Wang Da-lun, Cui gao-xian, Wang Mei, Fu Yi-bei, Zhang Xin-wei, Zhang Wu-shou
1995, 12(3): 58-60. doi: 10.11804/NuclPhysRev.12.03.058
Abstract:
X rays were observed to create when the anomalous phenomenon in the metal loaded with deuterium studied by the gas-discharge method. Therefore the X-ray energy spectra were measured by the absorption method, the specific X-ray approach and the NaI scintillation counter, while X-ray intensity was estimated by using 7Li thermoluminescent foils. The X-ray average energy measured by the absorption method is 27. 6±2. 1keV,whlch is fitted within the error extent to 26. 0±2. 4keV monoenergetic Xrays...