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Measurement of Double Differential Cross Sections for 40Ca(n,α)37Ar Reaction at 5.0 and 6.0 MeV

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中国核科技报告 1998年第S2期 8-13页

作者： Zhang Guohui Tang Guoyou Chen Jinxiang Shi Zhaomin (Institute of heavy ion physics, Peking University. Beijing 100871, china)Yu. M. Gledenov G. Khuukhenkhuu M. Sedysheva (Joint Institute for nuclear Research, Dubna 141908, Russia)Chen Zemin Chen Yingtang Zhang Xuemei (Department of physics, Tsinghua University, Beijing 100084, china)

Introduction Calcium is one of the most important structural materials. The abundance ofCa in natural calcium is 96.94%, soCa(n,α) data are very important in nuclear engineering. As we know, experimental data forCa(n,α) reaction are scarce and there are large differences among them. AlthoughCa is a double magic nucleus, theoretical calculation ofCa(n,α) data is difficult to fit experimental ones. Reliable data are needed for the study of reaction mechanism.

关键词： Ar Reaction at 5.0 and 6.0 MeV Measurement of Double Differential Cross Sections for Ca

AdS/CFT and physics of heavy ion collisions

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AdS/CFT and physics of heavy ion collisions

Adjustment of the Parameters in the Calculations of the γ-Production Data

The 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions

作者： Hong Liu center for theoretical physics Massachusetts Institute of Technology Cambridge MA 02139 USA

＜正＞The AdS/CFT correspondence, which maps certain gauge theories to a gravity theory, provides important avenues for understanding the dynamics of strongly coupled gauge theories. The techniques o（?）ered by the correspondence are particularly valuable for extracting qualitative information about those physical quantities in QCD which are not directly available from lattice calculations, such as transport coe±cients, or dynamical processes of any sort. Thus the AdS/CFT correspondence has potential for providing important insights into the physics of heavy ion collisions at RHIC or LHC. I will describe two lines of recent research activities in applying

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中国核科技报告 1997年第S3期 27-32页

作者： Liu Jianfeng Yao Ning (Department of physics, Zhengzhou University, Zhengzhou)Liu Tingjin (Chinese nuclear Data center, CIAE)

Introduction The γ-production data are very important for the nuclear engineering, especially for the calculations of the radiation shielding. Because the experimental values of the γ-production data can not satisfy the needs of the nuclear engineering both in the quantity of the nuclei and in the energy region covered by them, as the supplement, the theoretical calculations of the γ-production data are indispensable. The γ-production data in the nuclear reactions induced by neutrons include the γ-production cross sections, the γ-energy spectra, the γ-multiplicities and the reaction cross sections of the (n,γ) and the (n,xγ) reactions, where the (n,xγ) reactions mean

关键词： Adjustment of the Parameters in the Calculations of the Production Data

Differential Cross Section Measurement for 6Li（n,t）4He Reaction at 3.67 and 4.42 MeV

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中国核科技报告 1999年第S1期 7-11页

作者： Zhang Guohui Tang Guoyou Chen Jinxiang Shi Zhaomin Liu Guangzhi (Institute of heavy ion physics, Peking University, Beijing, 100871, china) Zhang Xuemei Chen Zemin (Department of physics, Tsinghua University, Beijing 100084, china) Yu. M. Dledenov M. Sedysheva G. Khuuknenkhuu (Joint Institute for nuclear Research, Dubna 141908, Russia)

Using a gridded ionization chamber, the differential cross sections for6Li（n,t）4He reaction were measured at 3.67 and 4.42 MeV. The neutrons were produced with D（d,n）3He reaction. Absolute neutron flux was determined through238U（n,f） and H（n,p） reaction. The result at 3.67 MeV is almost 90 degree symmetry but it is obviously forward peaked at 4.42 MeV in the center of mass system.

关键词： Differential Cross Section Measurement for Li Reaction at 3.67 and 4.42 MeV n,t

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低能轻离子输运的单参数描述

物理学报 1994年第3期43卷 505-515页

作者：罗正明侯氢四川大学原子核科学技术研究所辐射物理中心

低能离子输运的一个重要特点是它有可能被一个简单的参数所确定，我们发现离子的标度输运截面即是具有这种重要性质的参数。这种单值对应关系反映了不同能量的不同靶一离子的组合在输运上的内在相似性。本文给出了标度输运截面的定义，... 详细信息

低能离子输运的一个重要特点是它有可能被一个简单的参数所确定，我们发现离子的标度输运截面即是具有这种重要性质的参数。这种单值对应关系反映了不同能量的不同靶一离子的组合在输运上的内在相似性。本文给出了标度输运截面的定义，讨论了此标度参数标定离子输运行为的理论依据。同时通过应用离子输运双群模型所作的大量计算检验了单参数标定离子输运行为这一结论。最后给出以标度输运截面为自变量的离子反射系数和平均投影射程的经验公式。

关键词：轻离子低能输运标度输运截面

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Study of nuclear Data Online Services

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中国核科技报告 2003年第4期 300-307页

作者： FAN Tieshuan1, GUO Zhiyu1, LIU Wenlong1, YE Weiguo1, FENG Yuqing1, SONG Xiangxiang1, HUANG Gang1, HONG Yingjue1, LIU Chi1, LIU Tingjin1,2, HUANG Xiaolong2, CHEN Jinxiang1, TANG Guoyou1,SHI Zhaoming1, and CHEN Jia’er1 1 Institute of heavy ion physics and MOE Key Lab of heavy ion physics, Peking University, Beijing 100871,china 2 china nuclear Data center, CIAE, P.O.Box275(41), Beijing 102413

A web-based nuclear data service software system, NDOS ( nuclear Data Online Services), has been developed and released in Sep. 2001. Through the Internet, this system distributes charge of free 8 international nuclear databases: 5 evaluated neutron databases (BROND, CENDL, ENDF, JEF and, JENDL), Evaluated nuclear Structure and Decay File ENSDF, Experimental nuclear Data Library EXFOR database and IAEA Photonuclear Data Library. A software package, NDVS (nuclear Data Viewing System), facilitates the visualization and manipulation of nuclear data. The computer programs providing support for database management and data retrievals are based on the Linux implementation of PHP and the MySQL software.

关键词： of http www ENDF Study of nuclear Data Online Services

DLC formation in C implanted PET

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DLC formation in C implanted PET

Measurement of Angular Distribution and Cross Section for ^(58)Ni(n,α)^(55)Fe Reaction at 5.1 MeV

18th International Conference on High Pressure Science and Technology

作者： Wu Yuguang Zhang TongheKey laboratory in University for Radiation Beam Technology and Material modification Institute of Low Energy nuclear physics Beijing Normal University Beijing Radiation center Beijing

＜正＞In order to enhance the mechanical and electrical properties of the polymers, ion implantation techniques have been suggested [1-4]. Recent studies have shown that ion implantation is very effective for improving surface properties of polymers Polyethylene terephthalane （PET） has been modified with C ions attracted from a metal vapor arc source （MEVVA）. After implantation, sheet resistance decreased. The results from nano testing show that after C implantation, flexibility of implanted layer increases as shown in Fig.l. The Surface hardness is 12.3 times greater than that of PET, 2 times greater than stainless steel hardness （3GPa）, the Modulus increases 2.6 times comparing with PET as shown in Table 1. The infrared absorption indicated that the bonds of carbon nano-particles and DLC nano-particles are detected. The PET has been strengthened by these dispersed nano-particles. The measurement results using nano hardness tester show that the surface hardness and modulus increase obviously. The surface structure has greatly changed. The TEM photo shows that the nano-particles were formed.

关键词： C implantation Tribological properties Nano particle Surface strengthening mechanism of polymer.

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Chinese journal of nuclear physics 1995年第1期17卷 45-48页

作者： Tang Guo-you Bai Xin-hua Shi Zhao-min Chen Jin-xiang (Institute of Heary ion physics.Peking University.Beijing 100871)Yu.M.Gledenov G.Khuuhenhuu Yu.P.Popov (Joint Institute for nuclear Research,Dubna 141980.Russia) 北京大学重离子物理所北京 Joint Institute for nuclear Research 俄罗斯

The α-particle angular distribution of 58Ni（n,α）55Fe was measured at incidentneutron energy 5.1 MeV using a grid ionization *** fluence was deter-mined by fission of 238*** present results were compared with the t... 详细信息

关键词： Grid ionization chamber Fission chamber Angular distribution Cross section

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Long range implantation by MEVVA metal ion source

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nuclear Science and Techniques 2001年第1期12卷 16-20页

作者： ZHANG Tong-He WU Yu-Guang MA Fu-Rong LIANG Hong (Key laboratory in University for Radiation Beam Technology and Material modification, Institute of Low Energy nuclear physics, Beijing Normal University Beijing Radiation center, Beijing 100875) Key laboratory in University for Radiation Beam Technology and Material modification Instituteof Low Energy Nuclear Physics Beijing Normal University Beijing Radiation center

Metal vapor vacuum arc (MEVVA) source ion implantation is a new technology used for achieving long range ion *** is very important for research and application of the ion beammodification of materials. The results showthat the implanted atom diffusion coefficient increases in Mo implanted Al with high ion flux andhigh dose. The implanted depth is 311.6 times greater than that ofthe corresponding ion range. The ionspecies, doses and ion fluxes play an important part in the long-range implantation. Especially,thermal atom chemistry have specific effect on the long-range implantation during high ion fluximplantation at transient high target temperature.

关键词： MEVVA离子源离子移植扩散技术

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