Ion trap with longitudinal permanent magnet and mass spectrometer using same
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United States of America Patent
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Aug 11, 2009
Grant Date -
Dec 4, 2008
app pub date -
Aug 2, 2005
filing date -
Aug 5, 2004
priority date (Note) -
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Abstract
A vacuum magnetic ion trap includes an assembly forming a permanent magnet including at least two magnetized structures (30, 32) in the form of hollow cylinders, one convergent radial structure, magnetized along a convergent radial direction, and one divergent radial structure, magnetized along a divergent radial direction, the convergent and divergent radial magnetized structures (30, 32) being arranged along a common longitudinal axis (XX') The trap also includes a sealed chamber (4) containing anion confinement cell (8) fixed between the at least two magnetized structures (30, 32) and including at least two trapping electrodes (10) connectable to a voltage generator (12).
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