Microchannel plate having an etch limiting barrier

Details Microchannel plate having an etch limiting barrier Microchannel plate having an etch limiting barrier

G - Physics

02

B

313/70, 313/75

G02B 6/08 (2006.01) C03B 37/15 (2006.01) H01J 9/12 (2006.01) H01J 43/24 (2006.01)

Patent

CA 1269696

A MICROCHANNEL PLATE HAVING AN ETCH LIMITING BARRIER ABSTRACT OF THE INVENTION An improved microchannel plate is shown fabricated from tubes formed from at least two types of cladding glass and a core glass, including a first cladding of partial acid resistant glass and a second, super cladding of high acid resistant glass. The first cladding may surround a hollow core that forms a passage or it may surround a core of low acid resistant glass which is removed by an acid bath to form the passage. The second cladding surrounds the first, while the opening of the passage surrounded by the first cladding is tapered by an acid etch that does not affect the second cladding. Thus, the ratio of the open area of the passage to their end surface area is controlled only by the removal of the first cladding.

539990

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