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台湾研究 2024年第1期 1-14页

作者： institute of Taiwan Studies, chinese {2. of Social sciences 中国社会科学院台湾研究所

2.2.年1月13日,台湾地区领导人和立法机构“二合一”选举落下幕。民进党籍候选人赖清德、萧美琴当选台湾地区正副领导人。台湾地区立法机构总额113席中,中国国民党获52.,民进党获51席,民众党获8席,无党籍及未经政党推荐者获2..

关键词：中国国民党民进党立法机构台湾地区民众党推荐者二合一候选人

Rem-meter correction factor for measuring high energyneutrons outside concrete shielding

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Nuclear Science and Techniques 1998年第2期9卷 109-112页

作者： Li Gui-Sheng (institute of modern physics, the chinese academy of sciences,{2.) Inititute of modern physics Chinese Academy of Sciences Lanzhou 730000 China

Correction factors of both Rem-meters, the 10 inch diameter single-sphere Remmeter and the standard A-B Rem-meter, were estimated for measuring high energy neutron dose equivalent outside a concrete shielding wall and the effects that the emitted neutron spectra become remarkably "harder" penetrated through a concrete shielding wall, and the energy response of the Rem-meter were taken in account. The estimated results could be applied in the measurement of neutron dose equivalent for the intermediate energy heavy ion reactions to avoid the difficulty induced by the energy response of the Rem-meters.

关键词：高能中子混凝土屏蔽雷姆米修正因子

Status and Prospects of HIRFL Experiments

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原子核物理评论 2009年第S1期26卷 7-15页

作者： XU Hu-shan (institute of modern physics, chinese academy of sciences,{2., China) institute of modern physics Chinese Academy of SciencesLanzhou 730000China

The research activities at HIRFL cover the fields of radio-biology,material science,atomic physics,and nuclear physics. This report mainly concentrates on the experiments of nu-clear physics with the existing and plan... 详细信息

关键词： HIRFL CSRm CSRe ETF

Neutron distribution and yield produced by 50 MeV/u^(18)O-ion on thick targets

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Nuclear Science and Techniques 1999年第3期10卷 137-142页

作者： LI Guisheng ZHANG Tianmei LI Zongwei SU Youwu ZHANG Shumin (institute of modern physics, the chinese academy of sciences,{2.) institute of modern physics Chinese Academy of sciences Lanzhou 730000 China

Neutron energy, fluence rate, angular distributions and dose equivalent rate distributions around the thick Be, Cu, An targets bombarded by 50 MeV/u 18O-ion were measured using a threshold detector activation method. At the same time,the neutron yields of 18O-ion and the neutron emission rates in the forward direction were obtained approximately.

关键词： 18O离子中子分布剂量等价速率

Fission Angular Distributions for the Incomplete Fusion Reactions

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chinese journal of nuclear physics 1997年第2期19卷 88-94页

作者： Liu Guoxing Chen Keliang Yu Xian Dai Guangxi institute of modern physics,the chinese academy of sciences,{2. 730000 中科院近代物理所甘肃兰州

The fission angular distributions for the 16O+159Tb,16O+197Au and 16O+2.9Bi reac-tions are measured by the solid state nuclear track *** subtraction of the contribu-tion of intermediate mass fragment（IMF）,the fission angular distributions are fitted by thetransitional state statistical model（TSM）and the single-spin standard theory is used to extractthe spins of the fissioning *** relation between spins and bombarding energy is dis-cussed.

关键词： Incomplete fusion Sequential fission Fission nuclei spin

Strengthening of the boreal winter Hadley circulation and its connection with ENSO

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Progress in Natural Science:Materials International 2007年第11期17卷 1327-1333页

作者： Ma Jie1,2.and Li Jianping2.1. College of Atmospheric sciences, lanzhou University,{2., China 2. LASG, institute of Atmospheric physics, chinese academy of sciences, Beijing 10002., China) College of Atmospheric sciences Lanzhou University Lanzhou 730000 China LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

Empirical orthogonal function (EOF) analysis is carried out for the year-to-year variability of the boreal winter (DJF) mass stream function of the mean meridional circulation (MMC) during the period 1948—2.05. The results demonstrate that it is dominated by the equatorially asymmetric and symmetric modes. Further analysis shows that the former mode is linked with the boreal winter Hadley cell mainly on the decadal time-scale, and the latter on the interannual time-scale. The asymmetric mode index (AMI) with a clear upward trend contributes to the decadal strengthening of the boreal Hadley circulation, and is closely correlated with the tropical SST warming, especially in the region of Indo-west Pacific warm pool (INWP). Furthermore, the AMI also contributes to the abrupt change of the correlation coefficient between the boreal Hadley circulation and ENSO after 1976. The symmetric mode index (SMI) with robust and stable linkage with ENSO shows a significant interannual variability, suggesting that the variability of the Hadley circulation is mainly associated with ENSO on the interannual time-scale.

关键词： the Hadley circulation interannual time-scale decadal time-scale

Anomalous Phenomena in E<18 keV Hydrogen Ion Beam Implantation Experiments on Pd and Ti

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chinese journal of nuclear physics 1997年第4期19卷 244-249页

作者： Wang Tieshan~(1) Piao Yubo~(2. Hao Jifang~(1) Wang Xuezhi~(2. Jin Genming~(1) Niu Zhanqi~(2. (1)institute of modern physics,the chinese academy of sciences,{2. 730000 (2.Department of modern physics of {2. University,{2. 730000 中科院近代物理所甘肃兰州兰州大学现代物理系甘肃兰州

Implantation experiments of low energy（1 keVmax1.2.mA/cm2.and lowbeam density(Jmin0.02.mA/cm2..Palladium and titanium foils（plates）are bombarded withproton and deuteron beams in order to compare the atomic and nucl... 详细信息

Implantation experiments of low energy（1 keVmax1.2.mA/cm2./sup>)and lowbeam density(Jmin0.02.mA/cm2./sup>).Palladium and titanium foils（plates）are bombarded withproton and deuteron beams in order to compare the atomic and nuclear interactions between dif-ferent ion beams.X-ray and charged particles are measured,and neutron and gamma doses arealso monitored during the implantation *** anomalous peak in X-spectra,whoseenergy is about four times the beam energy,is observed during the high beam density *** peak moves from about 40 keV to 62.keV and FWHM reduces rapidly,while thebeam energy and intensity *** wide peak with over twice the beam energy is mea-sured in experiment with low beam *** is located between 16 keV and 30 keV,and itspeak energy increases with the increase of implantation dose（implantation time）.Some anoma-lous intensities of neutrons correlated with a charged particle peak（2.93,3.85 MeV）are alsoobserved in the deuteron-palladium *** highest neutron intensity reaches about8×104 n/s,while the beam energy and intensity are about 15 keV and 1.0 mA,respectively.

关键词： Hydrogen ion beam Low energy Implantation Palladium and titanium foils

Analysis of products of thymine irradiated by ^(18)O^(8+) ion beam in N_2. saturated aqueous solution

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Nuclear Science and Techniques 1999年第3期10卷 180-183页

作者： CAI Xichen WEI Zengquan LI Wenjian LIANG Jianping LI Qiang (institute of modern physics, the chinese academy of sciences,{2.) institute of modern physics Chinese Academy of sciences Lanzhou 730000 China

Some methods of capillary gas chromatography, such as GC, GC-MS,GC-FT-IR, are used to analyze the products of thymine irradiated by 18O8+ ion beam in N2. saturated aqueous solution. From the results of GC-MS the molecular weight of products can be determined, and from the results of GC-FT-IR some molecular structure information of products can be obtained. By this way the products,5,6-Dihydrothyndne, 5-Hydroxyl-5-Methylhydantoin, 5-Hydroxyl-6-Hydrothymine, 5-Hydro-6-Hydroxylthymine, 5-Hydroxymethyluracil, Trans-Thymine glycol, Cis-Thymine glycol and dimers are determined without separation of them from samples. Though these products are as same as those products of thymine irradiated by γ rays in N2. saturated aqueous solution, the mechanism of thymine irradiated by heavy ion beam in aqueous solution is different from that by γ rays. The main products of thymine irradiated by 18O8+ ion beam in N2. saturated aqueous solution are hydroxyl adducts at 5-6 band of thymine, while the main products of thymine irradiated by γ ray in N2. saturated aqueous solution are dimers of thymine.

关键词： ^18O^8+离子束辐照胸腺碱 N2.饱和水溶液

HIRFL and studies of hot nuclei and nuclei far from stability

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chinese Science Bulletin 1997年第7期42卷 529-541页

作者： LUO Yixiaoinstitute of modern physics, chinese academy of sciences, National Laboratory of Heavy Ion Accelerator of {2., lanzhou 730000, China institute of modern physics Chinese Academy of Sciences National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou China

HEAVY ion physics has been rapidly developing at the limits of energy (nuclear temperature), isospin and spin. Heavy ion research facility of lanzhou (HIRFL) is of cyclotron family delivering intermediate energy heavy ions. During the recent years, progress has been made in the studies of heavy ion physics as well as in the development of the HIRFL. This review article will

关键词： heavy ion accelerator radioactive ion beam hot nuclei nuclei far from stability.

Experimental test of a new neutron threshold detector and its application

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Nuclear Science and Techniques 2002年第3期13卷 149-155页

作者： LI Gui-Sheng, ZHANG Tian-Mei, SU You-Wu, LI Shu-Wei(institute of modern physics, the chinese academy of sciences,{2.) institute of modern physics the Chinese Academyo f Sciences Lanzhou 730000 institute of modern physics the Chinese Academyo f Sciences Lznahou 730000

The possibility of using 2.9Bi as a new threshold detector to measurc high-energy neutrons was investigated for the first time. At the same time the experiment measured successfully the emitted neutron fiuence rate, energy spectrum and dose equivalent rate distributions in the heavy ion target area using a detector complex including 2.9Bi, 115In, 2.A1, 19F and 12. samples.

关键词：阈探测器中子谱实验