共查询到19条相似文献,搜索用时 187 毫秒
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通常情况下该实验用以对电子的荷质比进行测量。笔者发现,如果进行逆向构思,把电子的荷质比作为已知量时,可重新进行理论推导从而得到真空中的光速值。基于该理论基础重新设计塞曼效应试验,就可以得到测量光速的一种新方法。本文主要就采用这一方法测光速时,对影响测量精度的主要因素进行了分析。 相似文献
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对汞谱线塞曼效应进行了理论分析,通过利用CCD观测系统获取了塞曼效应实验分裂干涉圆环图像,证明了实验现象与理论分析完全一致,并对实验数据进行处理,定量测量了朗德g因子,发现误差较小。 相似文献
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从分裂波数差概念出发,理清塞曼效应电子荷质比测量实验中关于观测的对象及其波数差的确定、错序法等容易混淆和不易理解的问题;基于标准具自由光谱范围,利用分裂谱线波数差分布图对汞546.1 nm塞曼分裂错序花样进行了推演。以增进学生对电子荷质比测量方法的理解,并为塞曼效应实验教学提供参考。 相似文献
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随着CCD摄像技术成熟并应用于塞曼效应实验中,图像数据的处理方法成了影响实验测量误差的最大因素.本文采用改进的可变压力Snake模型方法实现塞曼效应分裂圆环的数据测量,从而提高测量的稳定性和精确度;并利用Origin的非线性拟合进行数据的误差评价. 相似文献
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塞曼效应实验中谱线环的直径会随着磁场的强弱而变化,可以利用此现象测量磁场.本文导出了磁场测量公式,通过实际测量,发现了磁场测量误差的规律,设计了误差传递模型来模拟和论证了这一规律,所得到的结论,可以指导磁场测量的方法,提高测量的精度. 相似文献
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用法布里—珀罗标准具测量塞曼分裂谱线波数差和荷质比的简单方法 总被引:1,自引:0,他引:1
根据原子光谱线在外磁场中的分裂特点和法布里-珀罗标准具有自由光谱范围,导出一种在塞曼效应实验中测量分裂谱线波数差和电子荷质比的简单方法,并给出了应用实例。 相似文献
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Effects of ions charge-mass ratio on energy and energy spread of accelerated ions in laser driven plasma are investigated in detail by proposing a simple double-layer model for a foil target driven by an ultrastrong laser. The radiation pressure acceleration mechanism plays an important role on the studied problem. For the ions near the plasma mirror, i.e. electrons layer, the dependence of ions energy on their charge-mass ratio is derived theoretically. It is found that the larger the charge-mass ratio is, the higher the accelerated ions energy gets. For those ions far away from the layer, the dependence of energy and energy spread on ions charge-mass ratio are also obtained by numerical performance. It exhibits that, as ions charge-mass ratio increases, not only the accelerated ions energy but also the energy spread will become large. 相似文献
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In this paper we discuss the relevance of electron-nuclear double transitions for the problem of the amplification of gamma
rays. We consider the electron-nuclear coupled system of 151Eu in a CaF2 lattice, in the presence of a strong static magnetic field. We analyze the possibility of pumping this electron-nuclear coupled
system from the ground atomic electron Zeeman level to a higher electron level with the aid of a microwave magnetic field,
while the nucleus is simultaneously undergoing a gamma-ray transition to the nuclear ground state. It is shown that an overall
inversion condition can be satisfied even in the absence of inversion of the nuclear populations, provided that the ratio
of the electron populations in the excited and ground electron Zeeman states has a sufficiently small value.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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借助带水准仪和三角支架的十字线激光器准确快捷调节塞曼效应实验系统中各光学元件等高共轴,观察到清晰的塞曼分裂图像,准确测量笔型汞灯处的磁场强度大小,大大减小了实验误差。 相似文献