Radiant energy – Ionic separation or analysis
Patent
1984-09-10
1986-09-16
Anderson, Bruce C.
Radiant energy
Ionic separation or analysis
250288, 310331, G01J 302
Patent
active
046124403
ABSTRACT:
Slit means in spectrometers for the analysis of organic and inorganic substances, in particular in mass spectrometers, have hitherto been controlled for varying the slit widths by connecting them in a suitable manner to a metallic wire, through which an electric current flowed, under the influence of which the wire heats up and changes its length. The slit or diaphragm means connected to the wire were then displaced relative to the beam path. It is a great disadvantage that the diaphragms follow a change of the current for controlling the slit widths with a relatively long time delay, which is unacceptable for various types of measuring operation, in particular types of measuring operation under data system control. To eliminate this disadvantage, a device (11) is proposed which has at least one movable slit jaw (12) which is movable to and fro, substantially perpendicular to the beam path (16) and without delay, by a piezo-electric element (14).
REFERENCES:
patent: 2016025 (1935-10-01), Scribner et al.
patent: 2619609 (1952-11-01), Reid
patent: 2852684 (1958-10-01), Payne
patent: 3433945 (1969-03-01), Erickson et al.
patent: 3655963 (1972-04-01), Brunee et al.
patent: 3928778 (1975-12-01), Ivanov et al.
Brunnee Curt
Dobberstein Peter
Kappus Gunter
Anderson Bruce C.
Finnigan Mat GmbH
Guss Paul A.
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