Author:
Lossing F. P.,Shields R. B.,Thode H. G.
Abstract
A direct action shunt selector has been designed that pre-selects the appropriate shunt so that widely different mass spectrometer ion currents can be recorded linearly on a standard chart. In conjunction with a linear direct current amplifier and a Leeds and Northrup Speedomax pen recorder, this unit allows rapid and accurate recording of a given mass spectrum, which can be scanned by varying either the magnetic field or the ion accelerating potential of the mass spectrometer. When used with a 180° Nier type mass spectrometer with well stabilized circuits, a precision of ± 0.2% in measuring the ratio of [Formula: see text] and [Formula: see text] was obtained. Also, samples of xenon were investigated and the abundances of the isotopes determined.
Publisher
Canadian Science Publishing
Subject
Pharmacology (medical),Complementary and alternative medicine,Pharmaceutical Science
Cited by
10 articles.
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