A NEW OPERATING MODE OF A QUADRUPOLE ION-TRAP IN MASS-SPECTROMETRY .1. SIGNAL VISIBILITY

被引:8
|
作者
ZEREGA, Y
ANDRE, J
BRINCOURT, G
CATELLA, R
机构
[1] Laboratoire de Physique des Interactions Ioniques et Moléculaires, (Unité de Recherche Associée au C.N.R.S. no 773), Université de Provence, F 13397 Marseille Cedex20
关键词
ION TRAP; FOURIER TRANSFORM; SIGNAL VISIBILITY;
D O I
10.1016/0168-1176(94)85019-4
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
We explain a new operating mode of a quadrupole ion trap in mass spectrometry using a Fourier transform technique without additional excitation of ion motion. We introduce a mathematical formalism to describe the operating mode. Theoretical calculations are made to show the shape of the spectrum. We give an estimation of the signal-to-noise ratio with a single ion species at the secular frequency. In the case of two ion species, we notice the influence of the most abundant species over the other. Experimental results confirm the theoretical predictions and show the very good sensitivity of this method, even with few confined ions.
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页码:57 / 65
页数:9
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