Science. 1965 May 21;148(3673):1047-53. doi: 10.1126/science.148.3673.1047.
The new spectroscopy is in its infancy, and many fascinating aspects are yet to be studied. The properties of thin films may be studied by means of the excitation they induce in a given kind of beam. The production of ions with but a single electron offers a means of carefully mapping the nuclear charge distribution without the complications introduced by the normal complement of electrons. The study of high-purity, multiply ionized particles should make for better temperature determinations in hot plasmas. Possibly the data on lifetimes and modes of decay of excited energy levels may assist in the quantitative assignment of element abundances in the stars. One can even attempt to use the glowing beams as sources for absorption spectroscopy. The method seems to permit study of every stage of excitation for every stage of ionization for every element in the periodic table. Practical problems may interfere with so complete a study, but a major extension of our knowledge of atomic structure seems to be at hand.
新的光谱学仍处于起步阶段，还有许多迷人的方面有待研究。通过激发给定类型的光束，可以研究薄膜的性质。通过产生只有一个电子的离子，可以在没有正常电子补充所带来的复杂性的情况下，仔细绘制核电荷分布。对高纯度、多次电离粒子的研究应该有助于更好地确定热等离子体中的温度。激发能级的寿命和衰变模式的数据甚至可能有助于定量确定恒星中元素的丰度。人们甚至可以尝试将发光束用作吸收光谱的光源。该方法似乎允许研究元素周期表中每个元素的每个电离阶段的每个激发阶段。实际问题可能会干扰如此完整的研究，但我们对原子结构的认识似乎即将得到重大扩展。
