Electron multiplier
AssigneeHamamatsu Photonics K.K.
InventorsHiroyuki Hanai, Nobuharu Suzuki
Life of this patent
Estimating the term…
Abstract
A venetian blind dynode 5A and metal channel dynodes 5B of a dynode unit 5 are fitted along with insulating spacers (insulating plates) 11 on columns 9 erected on a stem plate 3 that makes up a vacuum container, and since in this state, venetian blind dynode 5A, metal channel dynodes 5B, and insulating spacers (insulating plates) 11 are supported integrally and firmly by columns 9, venetian blind dynode 5A, metal channel dynodes 5B, and insulating spacers (insulating plates) 11 will not undergo inadvertent lateral deviation due to vibration or impact and dynode unit 5 exhibits an excellent anti-vibration effect.
Claims1
An electron multiplier comprising:
- a dynode unit, having a plurality of dynodes positioned in a mutually-insulated, layered state in multiple stages and disposed in a vacuum container;
- a plurality of insulating plates, insulating the respective dynodes from each other;
- and
- columns, erected on a stem plate, making up the vacuum container, so as to fit or engage with the respective dynodes and the respective insulating plates,
- wherein the respective dynodes and the respective insulating plates are overlapped alternatingly in the state of being fitted or engaged with the columns and the respective dynodes and the respective insulating spacers are supported integrally on the columns by means of arresting members being fixed to the tip portions of the columns.
Dependencies are inferred from the claim text.