Itt Manufacturing Enterprises, Inc.

Photonis Scientific, Inc.

Matthew Breuer

Kiki H Hosea

A channel electron multiplier having a high aspect ratio and differential coatings along its channel length is disclosed. The elongated tube has an input end, an output end, and an interior surface extending along the length of the tube between the input end and the output end. The channel electron multiplier also has first and second conductive layers formed on the interior surface of the tube. The first conductive layer is selected to provide a first electrical resistance, a first electron emission characteristic, or both, and the second conductive layer is selected to provide a second electrical resistance, a second electron emission characteristic, or both. A method of making a channel electron multiplier having two or more different conductive layers is also disclosed.

Differential coating of high aspect ratio objects through methods of reduced flow and dosing variations

A channel electron multiplier including a single channel CEM for receiving an input particle. A multi-channel CEM is positioned after the single channel CEM for receiving emissions from the single channel CEM. An electron collector is positioned after the multi-channel CEM for generating a pulse current in response to emissions from the multi-channel CEM.

Tandem continuous channel electron multiplier

An ion detection system includes a mass analyzer generating an ion beam along an ion beam longitudinal axis. A field generator generates a field for altering the direction of ions in the ion beam away from the ion beam longitudinal axis. A conversion dynode includes an ion collision region on a conversion dynode surface. A conversion dynode axis passes through the ion collision region perpendicular to the conversion dynode surface, the conversion dynode axis being offset from and not intersecting the ion beam longitudinal axis. An electron multiplier receives secondary charged particles from the conversion dynode generated in response to the ion collision with the conversion dynode surface.

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Hadley, MA, United States of America

Matthew Breuer