Microchannel plate having an etch limiting barrier

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

1986-11-03

1988-04-12

LaRoche, Eugene R.

350 9633, G02B 608

Patent

active

047370130

ABSTRACT:
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 passages to their end surface area is controlled only by the removal of the first cladding.

REFERENCES:
patent: 3366506 (1968-01-01), Granitsas et al.
patent: 3742224 (1973-06-01), Einstein
patent: 3948582 (1976-04-01), Martin

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