Planar Dynode Multipliers for High-Speed Counting

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Description

Technical report discussing a new high-speed electron multiplier using a planar dynode configuration. This multiplier has a total transit time significantly shorter than available in conventional structures of equivalent gain. It also features rise-times generally less than three nanoseconds while providing the large sensitive area of an unfocused configuration. Two basic types of planar dynodes are employed: transmission secondary emission thin films as the early multiplier stages and silver-magnesium modified mesh multipliers as the high current output stages.The relevant gain and pulse-response data for these two types of dynodes are presented. The structure is quite flexible and permits the number … continued below

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18 pages ; illustrations.

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Sapp, W. W. & Sternglass, Ernest J. February 26, 1964.

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Technical report discussing a new high-speed electron multiplier using a planar dynode configuration. This multiplier has a total transit time significantly shorter than available in conventional structures of equivalent gain. It also features rise-times generally less than three nanoseconds while providing the large sensitive area of an unfocused configuration. Two basic types of planar dynodes are employed: transmission secondary emission thin films as the early multiplier stages and silver-magnesium modified mesh multipliers as the high current output stages.The relevant gain and pulse-response data for these two types of dynodes are presented. The structure is quite flexible and permits the number and types of dynodes to be easily tailored to a specific application. In particular it will be shown how the number of mesh-type dynodes may be altered to effect a trade-off between current handling capabilities and rise-time characteristics. Several possible combinations of these planar dynods have been incorporated in photomultipliers whose gain, dark current, pulse response, and operating life are discussed.

Physical Description

18 pages ; illustrations.

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Digitized from microopaque cards.

Presented at Ninth Scintillation and Semiconductor Counter Symposium, February 26-28, 1964. Supported in part by U. S. Atomic Energy Commission.

Includes bibliographical references (page 7)

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  • Report No.: CONF-182-16
  • SuDoc Number: Y 3.At 7:22/CONF-182-16
  • Accession or Local Control No: metadc1201709
  • Archival Resource Key: ark:/67531/metadc1201709

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  • February 26, 1964

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  • Feb. 9, 2020, 2:12 p.m.

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  • April 1, 2020, 4:57 p.m.

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Sapp, W. W. & Sternglass, Ernest J. Planar Dynode Multipliers for High-Speed Counting, report, February 26, 1964; Elmira, New York. (https://digital.library.unt.edu/ark:/67531/metadc1201709/: accessed December 7, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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