Discharge chambers and ionization devices, methods and systems using them
AssigneePerkinElmer Health Sciences Canada, Inc.
InventorsMehrnaz Sarrafzadeh, Gholamreza Javahery, Charles Jolliffe, Lisa Cousins
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Abstract
Certain configurations of plasma discharge chambers and plasma ionization sources comprising a plasma discharge chamber are described. In some examples, the discharge chamber comprises a conductive area and is configured to sustain a plasma discharge within the discharge chamber. In other examples, the discharge chamber comprises at least one inlet configured to receive a plasma gas and at least one outlet configured to provide ionized analyte from the discharge chamber. Systems and methods using the discharge chambers are also described.
Claims19
A plasma discharge ionization source comprising a discharge chamber comprising a first electrode configured to couple to a power source, wherein the discharge chamber is configured to sustain a plasma discharge within the discharge chamber and comprises at least one inlet configured to receive a plasma gas and at least one outlet configured to provide ionized analyte from the discharge chamber, wherein the at least one inlet is present in a first region of the discharge chamber and the at least one outlet is outside the first region of the discharge chamber, and wherein the at least one inlet is coupled to the at least one outlet through a bend to remove interfering species from the ionized analyte.
A plasma discharge ionization source comprising a discharge chamber comprising a conductive area, wherein the discharge chamber is configured to sustain a plasma discharge within the discharge chamber and comprises at least one inlet configured to receive a plasma gas and at least one outlet configured to provide ionized analyte from the discharge chamber, wherein the discharge chamber further comprises at least one bend between the at least one inlet and the at least one outlet, and wherein the at least one bend is configured to reduce a number of metastable atoms and free electrons and photons exiting the discharge chamber through the at least one outlet.
Dependencies are inferred from the claim text.