QUADRATURE HETERODYNE METHOD FOR FOURIER-TRANSFORM ION-CYCLOTRON RESONANCE MASS-SPECTROMETRY

被引：13

作者：

FUJIWARA, M ^{[1
]}

KATAKURA, H ^{[1
]}

INOUE, M ^{[1
]}

机构：

[1] UNIV ELECTROCOMMUN,DEPT APPL PHYS & CHEM,CHOFU,TOKYO 182,JAPAN

来源：

RAPID COMMUNICATIONS IN MASS SPECTROMETRY | 1990年 / 4卷 / 07期

关键词：

D O I：

10.1002/rcm.1290040702

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

In Fourier‐transform ion cyclotron resonance (FT‐ICR) mass spectra resulting from the signals detected with a single pair of detection plates (i.e., real‐time‐domain signals), the foldback of spectral information about the Nyquist frequency occurs. In heterodyne mode FT‐ICR mass spectrometry, using quadrature reference signals, a complex ICR signal consisting of two quadrature reference signals, a complex ICR signal consisting of two quadrature signal components can be acquired easily. By Fourier transform of the signal, the reflection of peaks about the Nyquist frequency in the frequency‐domain spectrum can be eliminated. As a result, the available bandwidth of the spectrum is doubled. Validity of this quadrature heterodyne method is confirmed by the experimentally obtained spectrum of Xe+ ions. Copyright © 1990 John Wiley & Sons Limited

引用

页码：237 / 238

页数：2