Radiant energy – Ionic separation or analysis – Ion beam pulsing means with detector synchronizing means
Patent
1985-02-27
1987-09-15
Anderson, Bruce C.
Radiant energy
Ionic separation or analysis
Ion beam pulsing means with detector synchronizing means
250281, B01D 5944
Patent
active
046941681
ABSTRACT:
The spectrometer includes an ion source, an ion mirror receiving the ions issued from the source, a first detector placed so as to receive the ions reflected by the mirror and a second detector disposed behind the mirror, all these components forming an assembly of axial symmetry. A reflex spectrum of the ions reflected by the mirror and received by the first detector can be obtained in parallel with a spectrum of the neutral species which may have appeared as a result of in flight decompositions of metastable ions and which are received by the second detector. This arrangement is particularly adapted to the study of metastable ions, processing means being provided for producing correlated reflex spectra where the contributions of ion fragments corresponding to received neutral fragments is enhanced.
REFERENCES:
patent: 3727047 (1973-04-01), Janes
patent: 3769513 (1973-10-01), Delong
International Journal of Mass Spectroscopy and Ion Physics, vol. 52, Nos. 2/3, Sep. 1983, pp. 223-240, Elsevier Science Publishers Amsterdam (NL); H. Danigel et al.: "A 252 Cf Fission Fragment-Induced Desorption Mass Spectrometer: Design, Operation and Performance", p. 228, lines 21-40; FIG. 5.
Analytical Chemistry, vol. 50, No. 7, Jun. 1978, pp. 985-991, American Chemical Society, Columbus, Ohio (US); M. A. Posthumus et al.: "Laser Desorption-Mass Spectrometry of Polar Nonvolatile Bio-Organic Molecules", p. 985, col. 2, Lines 3-19.
International Journal of Mass--Spectrometry and Ion Physics, vol. 20, No. 1, May 1976, p. 77-88, Elsevier Scientific Publishing Company, Amsterdam (NL); R. Igershein et al.: "Spectrometres de Masse a Temps de Vol Avec Guided de Particule", p. 82, line 5--p. 83, line 7; FIGS. 6 and 7.
Le Beyec Yvon
Negra Serge D.
Anderson Bruce C.
Centre National de la Recherche Scientifique
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