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Proceedings Paper

Rate effects of standard and high-strip-current microchannel plate image intensifiers
Author(s): George J. Yates; Kevin L. Albright; Paul A. Zagarino; Matthew C. Thomas
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Paper Abstract

The gains of gated MCPIIs at high repetition rate (up to 10 kHz) were measured. Comparisons were made between the gain behavior of a standard ITT type F4111 MCPII and similar device incorporating a high strip current microchannel plate. The most notable effect observed for the standard MCPII is a decline in luminous gain with increasing gate repetition rate and with higher input irradiances. The intensifier with the higher strip current microchannel plate (MCP), on the other hand, exhibited little or no reduction in gain for gating frequencies up to 10 kHz under similar test conditions (60 pJ/cm2 input energy density). The charge storage capacity and recharge time of the standard MCPII are most likely the limiting factors in its ability to maintain a constant gain at high repetition rates. The limiting effect of the recharge time on the MCP gain is calculated and compared to the actual measurements.

Paper Details

Date Published: 1 January 1992
PDF: 7 pages
Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); doi: 10.1117/12.50531
Show Author Affiliations
George J. Yates, Los Alamos National Lab. (United States)
Kevin L. Albright, Los Alamos National Lab. (United States)
Paul A. Zagarino, EG&G Energy Measurements Group (United States)
Matthew C. Thomas, EG&G Energy Measurements Group (United States)

Published in SPIE Proceedings Vol. 1539:
Ultrahigh- and High-Speed Photography, Videography, and Photonics '91
Paul A. Jaanimagi, Editor(s)

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