質量分析法の鉄鋼中微量元素分析への応用 (第1報) : 測定条件のくり返し精度に及ぼす影響

概要

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Aiming at improving of the precision in analyzing trace elements in steels by a r-f spark source mass spectrography an investigation about measuring conditions was made.The repetition frequency gives remarkable influence to the ion intensity and it is desirable to fix the frequency.In order to take a photo of a spectrum of low exposed amount it is effective to use an ion-beam chopper making the repitition frequency fixed.In a narrow range, the influence of accelerating voltage makes little difference. And the precision is favorable under a condition of a good focusing.It was presumed that the time fluctuation of ion intensity depended upon measuring errors of a beam monitor, variety of plates etc. and not upon the separating distilling.
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