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首页> 外文期刊>Review of Scientific Instruments >The Production of Intense Ion Beams in a Mass Spectrometer
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The Production of Intense Ion Beams in a Mass Spectrometer

机译：质谱仪中强离子束的产生

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A simple 60° mass spectrometer has been built for the production of intense ion beams. Ions are produced by allowing an electron beam collimated by a transverse magnetic field to bombard the vapor issuing from a furnace. By adjusting conditions properly an arc may be struck and total ion currents of 1 to 2 ma could be obtained from the source when the accelerating voltage applied was 15 kev. The collected isotopes were completely resolved, and a total current of 0.3 ma for the several isotopes at the final collector was observed. Because of gas focusing at the operating pressure, space charge effects did not seriously affect the resolution and a resolving power of 1/100 could be obtained. In a 14‐hr. run 6.5 mg of separated zinc isotopes were collected. Preliminary results with magnesium, as well as other solids, indicated that many other substances could be separated without modifying the apparatus. Improvements which would permit higher yields are suggested.
机译：已建立了一个简单的60°质谱仪来产生强离子束。离子是通过使由横向磁场准直的电子束轰击从炉子发出的蒸汽而产生的。通过适当调整条件，当施加的加速电压为15 kev时，可能会产生电弧，并从离子源获得1至2 ma的总离子流。收集到的同位素被完全分解，在最终收集器处观察到几种同位素的总电流为0.3 ma。由于气体集中在工作压力下，所以空间电荷效应不会严重影响分辨率，并且可以获得1/100的分辨力。在14小时内。运行时收集了6.5 mg分离出的锌同位素。镁以及其他固体的初步结果表明，无需改进设备即可分离许多其他物质。建议进行改进以提高产量。

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