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Mass spectrometer

Patent ·
OSTI ID:6355066
;
This patent describes a mass spectrometer of the type wherein solenoidal magnet means produce a magnetic field including a region along the geometric central axis of the magnet means of high field intensity and high homogeneity with the magnetic flux lines within the region being generally parallel to the central axis and having vacuum chamber means including the region, having sample cell means at or within the region in which sample ions are formed, trapped, excited and detected and having means for ionizing a sample within the sample cell means. The improvement comprises the ionizing means consists of means positioned outside the region and off the central axis for directing an electron beam along a magnetic flux line that passes through the region.
Assignee:
Nicolett Instrument Corp., Madison, WI
Patent Number(s):
US 4668864
OSTI ID:
6355066
Country of Publication:
United States
Language:
English

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Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
BEAMS
CHARGED PARTICLES
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ELECTRON BEAMS
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
EXCITATION
IONIZATION
IONS
LEPTON BEAMS
MAGNETIC FIELDS
MAGNETIC FLUX
MASS SPECTROMETERS
MEASURING INSTRUMENTS
OPERATION
PARTICLE BEAMS
POSITIONING
SOLENOIDS
SPECTROMETERS
TRAPPING
VACUUM SYSTEMS