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M. Feng 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2002,18(3):371-377
The Raman interaction of a ultracold ion trapped with two travelling wave lasers is studied analytically with series solutions,
in the absence of the rotating wave approximation (RWA) and without restrictions of both the Lamb-Dicke limit and the weak
excitation regime. The comparison is made between our solutions and those obtained under the RWA in order to demonstrate the
validity region of the RWA. As a practical example, the preparation of Schr?dinger-cat states is proposed beyond the weak
excitation regime, using our calculations.
Received 12 March 2001 and Received in final form 16 October 2001 相似文献
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塞曼石墨炉原子吸收光谱法测定粉尘降尘中痕量锡 总被引:5,自引:0,他引:5
以KOH熔样,又以KOH作基体改进剂,研究了测定锡的灰化温度、原子化行为和消除干扰及试样前处理的方法,以KOH熔解的粉尘及降尘样液,特别适用于塞曼石墨炉的测定,背景可完全扣除。方法简便、快速、准确,灵敏度和精度高。相对标准偏差为4.0%,回收牢在96.4~110%范围内。 相似文献
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本文介绍非线性方程转化直线性方程和多元线性回归法来分析近代物理实验中塞曼效应分裂干涉圆环多处选点测量的处理过程。 相似文献
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We have been interested for some time in the study of the hydrogen bonded complexes in the far-infrared region with special attention to the adducts between phenol and pyridine-N-oxides (1). In such systems the intermolecular mode vσ was identified and some intramolecular vibrations related to the N-O group were observed to be remarkably shifted consequent on hydrogen bonding. In this context we wished to obtain a force field for the complex which could fit the observational results. Unfortunately for one of the constituents i. e. pyridine-N-oxide a force field, suitable for our purposes, was not available and therefore preliminarily we determined it. We report here the results of such analysis. 相似文献
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C. H. Gast J. C. Kraak 《International journal of environmental analytical chemistry》2013,93(4):297-312
Abstract The suitability of HPLC (normal and reversed phase adsorption) with UV or post-column reaction detection for the analysis of organomercurials was investigated systematically. The separation of organomercurials is best carried out on a reversed phase system with a C-8 bonded phase material as the stationary phase and acetonitrile-aqueous sodium bromide mixtures as the mobile phase. The precision and detection limit of the method and the efficiency of the extraction procedure were established. For the alkylmercury compounds the lowest limit of detection (80ppb) was obtained with the dithizone reaction detection and for the phenylmercury compounds with UV detection (60ppb). A chromatogram of a spiked fish (2ppmHg) and a river water sample (50ppbHg) is shown. 相似文献
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提出了恒定横向磁场塞曼原子吸收光谱法中吸光度的计算方法,讨论了用该法指导塞曼原子吸收光谱仪器的技术改造,以改善其若干技术性能。 相似文献
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