Variable energy photoionization device and method for mass spectrometry

Variable energy photoionization device and method for mass spectrometry

A mass spectrometer using a variable energy photoionization device for ionizing and/or cleaving molecules is disclosed. The device permits ionizing photon wavelengths to be selected from a range of wavelengths allowing the ionizing photon energies to be tuned so as to ionize molecules without excess...

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Hauptverfasser: VIORICA LOPEZ-AVILA, RANDALL URDAHL, JAMES E COOLEY, ARTHUR SCHLEIFER
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
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creator VIORICA LOPEZ-AVILA
RANDALL URDAHL
JAMES E COOLEY
ARTHUR SCHLEIFER
description A mass spectrometer using a variable energy photoionization device for ionizing and/or cleaving molecules is disclosed. The device permits ionizing photon wavelengths to be selected from a range of wavelengths allowing the ionizing photon energies to be tuned so as to ionize molecules without excessive fragmentation or to cleave molecules in a controlled manner by breaking only certain molecular bonds. Selection of the wavelengths is afforded by the choice of a plasma-forming gas combined with windowlessly radiating the ionizing photons from a plasma chamber. A method of mass spectrometry featuring selected ionizing photon wavelengths is also disclosed.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
title Variable energy photoionization device and method for mass spectrometry
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