发明授权
- 专利标题: Electron multiplier with replaceable rear section
- 专利标题(中): 具有可更换后部的电子倍增器
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申请号: US320277申请日: 1989-03-06
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公开(公告)号: US5030878A公开(公告)日: 1991-07-09
- 发明人: Raymond L. Roy , Peter W. Graves , Thomas J. Loretz , Jonathan W. Amy , George C. Stafford, Jr.
- 申请人: Raymond L. Roy , Peter W. Graves , Thomas J. Loretz , Jonathan W. Amy , George C. Stafford, Jr.
- 申请人地址: MA Brookfield
- 专利权人: Detector Technology, Inc.
- 当前专利权人: Detector Technology, Inc.
- 当前专利权人地址: MA Brookfield
- 主分类号: H01J43/24
- IPC分类号: H01J43/24
摘要:
A segmented electron multiplier is disclosed with front and rear sections. The sections are specially designed so that the length of the rear section compared to the length of the front section is no less than 4:1. This permits multiple replacements of the rear section, after the multiplier wears out, without any unsatisfactory drop in the overall electrical gain produced by the repaired device. In the preferred embodiment, the front portion is a funnel having a tubular stem, and the rear portion is a straight tube with a cylindrical helical inner channel. The length-to-length split is 5:1, which theoretically permits up to six or seven replacements of the rear section before unsatisfactory gain occurs.
公开/授权文献
- US6105950A Retainer 公开/授权日:2000-08-22