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Title: Collimator application for microchannel plate image intensifier resolution improvement

A collimator is included in a microchannel plate image intensifier (MCPI). Collimators can be useful in improving resolution of MCPIs by eliminating the scattered electron problem and by limiting the transverse energy of electrons reaching the screen. Due to its optical absorption, a collimator will also increase the extinction ratio of an intensifier by approximately an order of magnitude. Additionally, the smooth surface of the collimator will permit a higher focusing field to be employed in the MCP-to-collimator region than is currently permitted in the MCP-to-screen region by the relatively rough and fragile aluminum layer covering the screen. Coating the MCP and collimator surfaces with aluminum oxide appears to permit additional significant increases in the field strength, resulting in better resolution. 2 figs.
Inventors:
Issue Date:
OSTI Identifier:
201522
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 426000; 440000; PA: EDB-96:055011; SN: 96001551764
Patent Number(s):
US 5,495,141/A/
Application Number:
PAN: 8-196,405
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 27 Feb 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; MICROCHANNEL ELECTRON MULTIPLIERS; IMAGE INTENSIFIERS; COLLIMATORS; PERFORMANCE; COATINGS