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12-16 September 2005
University of Liverpool
Europe/Zurich timezone

Compositional Analysis of Microchannel Plates Using Energy-Dispersive X-ray Fluorescence Spectroscopy

15 Sep 2005, 10:30
45m
University of Liverpool

University of Liverpool

Greenbank Conference Park
Board: P43
Contributed Poster Applications in Space Science P : Coffee and Poster Session

Speaker

Mr James Carpenter (Space Research Centre, University of Leicester)

Description

Modern microchannel plate detectors exhibit low quantum efficiency in the extreme ultra violet range (100-1000 Å) compared to those manufactured before 1990. The cause of this reduction in efficiency is unknown. We describe recent investigations into the variation of surface composition along the channels of a number of MCPs exhibiting high and low efficiency. These compositional profiles, generated using energy dispersive X-ray fluorescence spectroscopy, provide insight into the mechanisms underlying the observed reduction in quantum efficiency and may assist in efforts to restore the EUV performance of MCPs through modifications to the manufacturing process.

Primary author

Mr James Carpenter (Space Research Centre, University of Leicester)

Presentation materials