Detector comprising transmission secondary electron emission means
AssigneeAdaptas Solutions Pty Ltd
InventorsRussell Jurek, Kevin Hunter, Antony Jones, Aditya Wakhle
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Abstract
Ion detectors of the type used in scientific instrumentation, such as mass spectrometers. More particularly, a self-contained particle detector includes an enclosure formed in part by a transmission mode secondary electron emissive element, the enclosure defining an internal environment and an external environment, wherein the transmission mode secondary electron emissive element has an externally facing surface and an internally facing surface and is configured such that impact of a particle on the externally facing surface causes emission of one or more secondary electrons from the internally facing surface.
Claims15
A self-contained particle detector comprising:
- an enclosure formed in part by a transmission mode secondary electron emissive element, the enclosure defining an internal environment and an external environment and the enclosure prevents or inhibits movement of a contaminant from the external environment to the internal environment, wherein the transmission mode secondary electron emissive element has an externally facing surface and an internally facing surface and is configured such that impact of a particle on the externally facing surface causes emission of one or more secondary electrons from the internally facing surface.
An apparatus comprising:
- a self-contained particle detector comprising an enclosure formed in part by a transmission mode secondary electron emissive element, the enclosure defining an internal environment and an external environment, wherein the transmission mode secondary electron emissive element has an externally facing surface and an internally facing surface and is configured such that impact of a particle on the externally facing surface causes emission of one or more secondary electrons from the internally facing surface;
- and
- (i) a conversion dynode, wherein the conversion dynode is in operable association with the self-contained particle detector such that a secondary electron emitted by the conversion dynode is capable of impacting the externally facing side of the transmission mode secondary electron emissive element;
- or
- (ii) an electron amplifier in operable association with the self-contained particle detector such that a secondary electron emitted by the electron multiplier is capable of impacting the externally facing side of the transmission mode secondary electron emissive element.
A method for detecting a particle, the method comprising:
- providing a self-contained particle detector comprising an enclosure formed in part by a transmission mode secondary electron emissive element, the enclosure defining an internal environment and an external environment and the enclosure preventing or inhibiting movement of a contaminant from the external environment to the internal environment,
- causing or allowing a particle to impact an externally facing side of transmission mode secondary electron emissive element which forms part of the enclosure, and
- causing or allowing the transmission mode secondary electron emissive element to emit a secondary electron from an internally facing side of the transmission mode secondary electron emissive element.
Dependencies are inferred from the claim text.