Methods for fragmenting ions in a linear ion trap
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United States of America Patent
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Aug 7, 2012
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Aug 6, 2009
app pub date -
Jan 26, 2009
filing date -
Jan 31, 2008
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Abstract
Methods for fragmenting ions retained in an ion trap are described. In various embodiments, a non-steady-state pressure of a neutral collision gas of less than about 5×10−4 Torr and an excitation amplitude of less than about 500 mV (peak to ground) is used to fragment ions with greater than about 80% fragmentation efficiency. In various embodiments, duration of ion excitation is greater than about 25 ms.
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