Time- of flight mass spectrometers for improving resolution...

Details Time- of flight mass spectrometers for improving resolution... Time- of flight mass spectrometers for improving resolution...

2006-10-03

2006-10-03

Lee, John R. (Department: 2881)

Radiant energy

Ionic separation or analysis

Ion beam pulsing means with detector synchronizing means

C250S283000, C250S397000

Reexamination Certificate

active

07115859

ABSTRACT:
A miniature time-of-flight mass spectrometer (TOF-MS) and method for increasing the collection efficiency of laser-desorbed ions in a miniature time-of-flight mass spectrometer (TOF-MS) is provided. The method provides a laser pulse generated by an ionization extraction device within the TOF-MS; maintains a sample plate potential at a ground level for a fixed delay period of about 50 ns; and uses a high voltage switch to sharply increase the sample plate potential up to 10 kV/mm.

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International Search Report PCT/US03/22438 Mailed May 7, 2004.

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