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Electron　Capture　into　excited　States　in　Collision　between　Li－like　N^（4＋）　Ion　and　Na　Target

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IMP & HIRFL Annual Report 1994年 59-60页

作者： Liu Zhanwen Zhou Sixin Zhang Wen Zhang Xuezhen Guo Xiaohong Ma Xinwen Yang Zhihu Liu Huiping Zhao Mengchun Wang Youde Li Dawan Yang Feng and Pan Guangyan(Institute of Physics, the Chinese Academy of Sciences, Beijing.)

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关键词： into Capture excited Ion Li Na States Target and between

MEASUREMENT OF HIGHLY excited STATE LIFETIME OF ATOMIC URANIUM BY TWOSTEP LASER INDUCED FLUORESCENCE

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Chinese Science Bulletin 1991年第16期36卷 1347-1349页

作者：王文韵郭川王连杰于华于英宁于皎路崔海宁 Changchun Institute of Applied Chemistry Academia Sinica Changchun 130022 PRC

The lifetime data of atomic uranium energy levels are indispensable in laser isotope separation (LIS)of uranium for selecting optimum separation scheme. The number of U levels is enormous and the density is high, rendering the U spectrum extremely complex. What is more, temperatures≥2500 K are needed to produce the required U densities for LIS. At these elevated temperatures uranium is very reactive, in addition to its radioactivity. All

关键词： highly excited state lifetime of atomic uranium.

The effects of detergents DDM and β-OG on the singlet excited state lifetime of the chlorophyll a in cytochrome b_6f complex from spinach chloroplasts

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Science China(Life Sciences) 2007年第4期50卷 505-510页

作者： CHEN XiaoBo1,3, ZHAO XiaoHui2, ZHANG JianPing2, LI LiangBi1& KUANG TingYun1 1 Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China 2 State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sci- ences, Beijing 100080, China 3 Graduate University of Chinese Academy of Sciences, Beijing 100039, China Key Laboratory of Photosynthesis and Environmental Molecular Physiology Institute of Botany Chinese Academy of SciencesBeijing 100093 China Graduate University of Chinese Academy of Sciences Beijing 100039 China State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China Key Laboratory of Photosynthesis and Environmental Molecular Physiology Institute of Botany Chinese Academy of SciencesBeijing 100093 China

The singlet excited state lifetime of the chlorophyll a (Chl a) in cytochrome b6f (Cyt b6f) complex was reported to be shorter than that of free Chl a in methanol, but the value was different for Cyt b6f com-plexes from different sources (~200 and ~600 ps are the two measured results). The present study demonstrated that the singlet excited state lifetime is associated with the detergents n-dodecyl-β-D- maltoside (DDM) and n-octyl-β-D-glucopyranoside (β-OG), but has nothing to do with the different sources of Cyt b6f complexes. Compared with the Cyt b6f dissolved in β-OG, the Cyt b6f in DDM had a lower fluorescence yield, a lower photodegradation rate of Chl a, and a shorter lifetime of Chl a excited state. In short, the singlet excited state lifetime, ~200 ps, of the Chl a in Cyt b6f complex in DDM is closer to the true in vivo.

关键词： cytochrome b6f detergent chlorophyll a singlet excited state lifetime singlet oxygen

Dynamic NMR and Twisted Intramolecular Charge Transfer excited States

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American Journal of Analytical Chemistry 2015年第5期6卷 402-410页

作者： Iraj Parchamazad Debra Hornyak Melvin Miles Chemistry Department University of La Verne La Verne CA USA

In this paper the results of dynamic NMR studies on ethylmethylamino-tertiary-butyl-phenylborane (EMABPB) with or without light are reported. The NMR data were recorded on a Bruker 400 MHz NMR equipped with our custom-made optical probe and with our custom-made 450 watts (W) monochromatic light sources. The molecular photochemistry including twisted intramolecular charge-transfer-excited-state (TICT) of the EMABPB in several solvents has been investigated. These results indicate that the aminoborane demonstrates multiple configurations in CD3Cl and CD2Cl2 resulting in the shifts of the signals of the alkyl groups on the nitrogen and boron. This indicates that there are some time-dependent changes at constant temperature over the irradiation interval. At ﹣60°C and the presence of light (λ = 265 nm), we observed a large change in the populations of the two sites, and this by itself indicates a modification in the rotation around the boron nitrogen bond in the excited state. By considering the existence of the TICT state, many important energy technologies may be developed with higher efficiency by controlling the back-electron transfer processes.

关键词： Twisted Intramolecular Charge Transfer State Back Electron Transfer Twisted excited State Dynamic NMR Rotation around B-N Bond Molecular Photochemistry inside NMR Probe Customized Optical Probe Solvent Effect Low Temperature Spectra

Investigation of Self excited Torsional Vibrations of Different Configurations of Automatic Transmission Systems during Engagement

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Engineering（科研） 2011年第12期3卷 1171-1181页

作者： Eid O. A. Abd Elmaksoud E M. Rabeih N A Abdel-halim S M. El Demerdash 不详

The vehicle drive line system is subjected to torsional vibration from different sources of the system such as;engine fluctuating torque, Hook’s joint and the final drive. However, the essential source is the friction torque induced in the friction elements, during their engagement. In the automatic transmission system, the planetary gear set includes several friction elements such as;clutch, band brakes, and one way clutch. During the engagement, severe torsional vibration is induced by friction which is noticeable by the passengers in the form of what so called vehicle shunt. In present paper, a torsional vibration model for Drive Line (DL) system includes three different configurations of automatic transmission is constructed. A computer program using MATLAB subroutines is implemented to obtain the system response. Effect of system parameters on the dynamic behavior and stability has been investigated. The system damping and the trend of the friction coefficient have an essential effect on the dynamic behavior and stability of the system. The system response is now predictable with change of the system parameters which opens up the opportunity in future to control the vibration level.

关键词： Self excited Torsional Vibration Computer Simulation Ravigneaux Planetary Gear Set Compound planetary Gear Set Longitudinally Mounted Automatic Transmission

Generation Model of Particle Physics with excited Rishon States

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Journal of High Energy Physics, Gravitation and Cosmology 2019年第1期5卷 140-148页

作者： Brian Albert Robson Department of Theoretical Physics Research School of Physics and Engineering The Australian National University Canberra Australia

It is proposed that the Generation Model (GM) of particle physics, which describes the elementary particles, the six leptons, the six quarks and the three weak bosons, of the Standard Model (SM) as composite particles in terms of three kinds of rishons and their antiparticles may be mimicking a simpler model, employing only two kinds of rishons and their antiparticles.

关键词： Generation Model Rishon excited Rishon State

INTRAMOLECULAR excited ENERGY TRANSFER BETWEEN ORTHOGONALLY π-ELECTRON CONSTITUENT HALVES OF SPIROCOMPOUND

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Chinese Science Bulletin 1985年第10期30卷 1338-1343页

作者：吴国生蒋龙祥 Shanghai Institute of Organic Chemistry Academia Sinica

Ⅰ. INTRODUCTION The reason that a great amount of interest has been showing in the intramolecular excited energy transfer (IEET) is the intimate relationship of the energy transfer direction with the chemical reaction of excited species. Spiropyrans are well known photochromic compounds and the photochromic transformation is generally considered to involve a simple rupture of the C-O bond. The initial evidence supporting this mech-

关键词： excited intramolecular intimate rupture degenerate showing generating supporting minus allowed

SUPERFLUORESCENCE CAUSED BY COLLISIONS BETWEEN excited Mg ATOMS

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Chinese Physics Letters 1985年第8期2卷 373-376页

作者： ZHANG Dao-zhong CHENG Bing-ying JU Rui ZHAO Xiao-kang Institute of Physics Academia SinicaBeijing

when 3s3p(1p)of Mg is resonantly excited by a dye laser,the bright and directional emission at 5184Åcan be *** have measured its intensity and temporal behavior in different Mg *** emission is believed to be the super... 详细信息

关键词： density. excited resonant

Charge Transfer Mechanism and Spatial Density Correlation of Electronic States of excited Zinc (3d<sup>9</sup>) Films

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Open Journal of Physical Chemistry 2014年第2期4卷 44-51页

作者： Li Chen Mitsugi Hamasaki Hirotaka Manaka Kozo Obara Country Graduate School of Science and Engineering Kagoshima University Kagoshima Japan

In material science, half filled 3d orbital of transition metals is essentially an important factor controlling characteristics of alloys and compounds. This paper presents a result of the challenge of excitation of inner-core electron system with long lifetime of zinc films. The advanced zinc films with excited inner-core electron, 3dn (n = 9, 8). We report experimental results of XPS measurements of 9 points in the sample along vertical direction, respectively. The most pronounced futures are existence of satellites, which are about 4 eV higher than the main lines. According to the charge transfer mechanism proposed by A. Kotani and K. Okada, it was clarified that the origins of these peaks are c3d9L for the main peak and c3d9 for the satellite, respectively. From the energy difference, δEB, and peak intensity ratio, I+/I-, between c3d9 and c3d10L, the energy for charge transfer, Δ, and mixing energy, T, were estimated. In the region where the intensity of c3d10L becomes large, Δ becomes small, 1.2 Δdc = 5.5 eV and Udd = 5.5 eV. In the analysis along vertical direction, intensity profile of Zn3d9 showed odd functional symmetry and that of Zn3d10L showed even functional symmetry. Only the intensity profile of C1s (288 eV) showed the same spatial correlation with Zn3d9. In our experiment, the sample also showed high mobility of the constituting elements. These suggest that charge conservation in excited zinc atom suggests combination between Zn3d9 and C2-.

关键词： XPS Zn3d9 Charge Transfer Spatial Symmetry of excited States