When an atom absorbs a photon with energy larger than its bound potential, it will be ionized and a photoelectron will be generated. This process can be described by the well-known Einstein photo-electric formula, since the intensity of the light field was very low and the light duration was very long in those days when the photo-electric effect was found.
http://arxiv.org/ftp/arxiv/papers/1004/1004.1867.pdf
第8篇量子物理
④光电效应是瞬时效应，几乎没有驰豫时间。 (2) 爱因斯坦方程：. (3) 康普顿效应中 ... 而求解定态薛定谔方程去可以自然地得出来。 (7) 学习指导. ① 德布罗意波也叫做 ...
This magnetisation implies a transfer of energy from the spin system to another system: the 'lattice', or tissue in the case of MRI. This transfer of energy is characterised by an exponential relaxation law with a time constant T1, also called spin-lattice relaxation time
http://www.euronuclear.org/e-news/e-news-14/nuclear-imaging.htm
This magnetisation implies a transfer of energy from the spin system to another system: the 'lattice', or tissue in the case of MRI. This transfer of energy is characterised by an exponential relaxation law with a time constant T1, also called spin-lattice relaxation time
http://www.euronuclear.org/e-news/e-news-14/nuclear-imaging.htm
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