Electron multipliers with reduced ion feedback

Details Electron multipliers with reduced ion feedback Electron multipliers with reduced ion feedback

1989-03-02

1990-12-18

Yusko, Donald J.

Electric lamp and discharge devices

Photosensitive

Secondary emitter type

313105CM, 313103R, 313105R, 313528, 445 5, 445 13, 445 50, 445 51, 445 57, H01J 4000

Patent

active

049788850

ABSTRACT:
Reduced ion feedback in an electron multiplier (EM) is achieved by applying a higher than normal bias voltage to the EM and degassing the EM with a relatively high concentration of self-generated particles as a result of the applied bias voltage.

REFERENCES:
patent: 2150317 (1939-03-01), Clark
patent: 2586771 (1952-02-01), Arditi et al.
patent: 2802127 (1954-02-01), Dobischek et al.
patent: 3488509 (1970-01-01), Goodrich
patent: 4099079 (1978-07-01), Knapp
patent: 4737623 (1988-04-01), Uhl
Timothy et al., "Multi-Anode Microchannel Arrays", 360 SPIE vol. 190 Optics Conference (1979) pp. 360-368.
J. G. Timothy, "Curved-Channel Microchannel Array Plates", Rev. Sci. Instrum. 52(8), pp. 1131-1142, Aug. 1981.
O. H. W. Siegmund, "Preconditioning of Microchannel Plate Stacks" SPIE Symposium, Feb. 7, 1989 pp. 3-10.
J. G. Timothy and R. L. Bybee, "Preliminary Results with Microchannel Array Plates Employing Curved Microchannels to Inhibit Ion Feedback", Rev.Sci. Instrum., vol. 48, No. 3, pp. 292-399, Mar. 1977.

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