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中国物理学报 1950年第2期 481-488页

作者： KING SING-NANInstitute, of modern physics, Academia Sinica

By using the formulae obtained in Part Ⅰ for the calculation of the binding energy of ~7Li anumerical estimate of the binding energy of ~7Li is made in accordance with the variational method thewave function being chosen rather *** results here are also in favour of the two rangepotential considered previously by Peng and Chang,and in particular the results indicate that theratio of the two ranges of the nuclear potential may be not less than 3,as in the case for ~6Li treatedabove,Part Ⅱ.

关键词： Li OF THE BINDING ENERGIES OF THE NUCLEI NUMERICAL CALCULATION FOR AND 7Li PART Contributions from Insitute of modern physics,Academia Sinica,No.5

ON THE BINDING ENERGIES OF THE NUCLEI ~6Li AND ~7Li PART Ⅱ NUMERICAL CALCULATION FOR ~6Li(Contributions from Institute of modern physics, Academia Sinica,No.4)

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中国物理学报 1950年第2期 462-474页

作者： YEH LUNG-FEYInstitute of modern physics, Academia Sinica

By using the formulae obtained in Part Ⅰ for the calculation of the binding energy of ~6Li,anumerical estimate is made here-the variational function being chosen rather *** resultsare in favour of the two-range nuclear potential considered previously,and indeed indicate a largerratio of the two ranges,the ratio being not smaller than three.

关键词： Li AND Academia Sinica,No.4 NUMERICAL CALCULATION FOR ON THE BINDING ENERGIES OF THE NUCLEI PART

ON THE BINDING ENERGIES OF THE NUCLEI ~6Li AND ~7Li PART Ⅰ.GENERAL FORMULATION(Contributions from Institute of modern physics,Academia Sinica,No.3)

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中国物理学报 1950年第2期 445-453页

作者： KING SING-NANInstitute of modern physics, Academia Sinica

By using the nuclear potential obtained by Peng and Chang as a working hypotnesis,we haveobtained the general formulae for computing the binding energies of ~6Li and ~7Li,the wave functionsbeing approximated by those ... 详细信息

关键词： Li ON THE BINDING ENERGIES OF THE NUCLEI PART AND Contributions from Institute of modern physics,Academia Sinica,No.3 GENERAL FORMULATION

Free Volume Changes in γ-Irradiated Polyethylene and Polytetraflourethylene

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Journal of Materials Science & Technology 2000年第3期16卷 302-304页

作者： Xianyi ZHOU (Dept. of modern physics, University of Science and Technology of China, Hefei 230027, China) Linhua ZHAI (Department of physics, Anhui Normal University, Wuhu 2.1000, China) Jiangfeng DU and Rongdian HAN (Department of modern physics, Univers Department of modern physics University of Science and Technology of China Hefei 230027 China Department of physics Anhui Normal University Wuhu 241000 China

Positron lifetime spectrum was measured and the change of the free volume was studied for commercial polyethylene (PE) and polytetrafluoroethylene (PTFE) during 7-irradiation processing up to 265 kGy. The free volume size increases but the crystallinity decreases as irradiation dose increases in PE. Both qualities (free volume size and crystallinity) in PTFE display an opposite behavior. The fractional free volume reduces monotonically with increasing irradiation dose in both PE and PTFE. The competition between the crosslinkmg and the splitting decomposition in polymers can be used to understand the free volume changes with irradiation dose.

关键词： PTFE Irradiated Polyethylene and Polytetraflourethylene

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, Lanzhou 730000) 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

A high power MOPA free-electron laser with narrowline-width

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Nuclear Science and Techniques 1999年第3期10卷 165-167页

作者： SHU Xiaojian (Institute of modern physics, Fudan University, Shanghai 200433 Institute of Applied physics and Computational Mathematics, Beijing 100088) 复旦大学物理系上海

A new kind of MOPA configuration to obtain a high power free-electron laser with very narrow line-width that can satisfy the requirements of some applications such as the laser isotope separation has been proposed, wh... 详细信息

关键词：自由电子激光器线宽窄功率大

Novel Experimental Method in the Study of Double Rydberg States by Laser Resonance Excitation

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Chinese Journal of Lasers 1997年第2期B6卷 141-146页

作者： XU Xiangyuan HUANG Wen(Department of modern Applied physics, Tsinghua University, Beijing 100084, China) Tsinghua Univ Beijing China

We describe a novel experimental method by introducing sequential ionization with a pulsed and a strong constant electric field in a time-of-flight mass spectrometer. This method is applied to study laser-excited double Rydberg states of neutral ytterbium atom, with the ionic resonance background in the spectrum of the double Rydberg states of Yb being greatly suppressed.

关键词： atomic double Rydberg state laser excitation field ionization

STAR-TOF and Related physics

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STAR-TOF and Related Physics

Modification of Analytical Expression of Electron Dynamical Diffraction

中国物理学会高能物理分会第七届学术年会实验分会场

作者： Jian WU for the STAR CollaborationDepartment of modern physics, USTC

来源： cnki会议评论

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Journal of Materials Science & Technology 2004年第1期20卷 1-2页

作者： Canying CAI, Qibin YANG and Hongrong LIUInstitute of modern physics, Xiangtan University, Xiangtan 411105, China Xiangtan Univ Inst Modern Phys Xiangtan 411105 Peoples R China

Assuming that the wave function φ>=eη, the Schrodinger equation can be written as. Neglecting the last two terms, an analytical expression of electron dynamical diffraction was derived by Qibin YANG et al. In this paper, the analytical expression is modified by further considering thesecond-order differential term When the accelerating voltage is not very high, or the sample is not very thin, the reciprocal vector g is large, the modification of the second-order differential is necessary; otherwise it can be neglected.

关键词： Electron dynamical diffraction Electron crystallography Schrodinger equation

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, Lanzhou 730000, 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