Title:
PHOTOELECTRON MULTIPLIER
Document Type and Number:
Japanese Patent JPH07192686
Kind Code:
A
Abstract:
PURPOSE: To provide a photomultiplier with improved photoelectron collecting efficiency. CONSTITUTION: In a photomultiplier 1, upper parts 34, 35, 36 of an electrode 30 work as a focusing electrode to distribute photoelectrons to both sides of an axial face 12, and lower parts 44, 44a, 46, 46a form a collector part. The initial multiplication of photoelectrons is carried out in the parts 44a, 46a, which are curved toward the axial face direction, of the walls 44, 46 facing to the side face. Hole parts 38, 40 of a middle flat plate 32 of the electrode 30 are covered with a highly transmissive grid 42. The electrode is further provided with a center partitioning wall 48 spread near to an input diode 24 of the thin layer electron multiplier from the flat plate 32. A transverse rod 52 having a small cross section exists on the axial face 12 and a potential near the potential to the photoelectric cathode is applied to the rod.
Inventors:
PIEERU RERUMITO
Application Number:
JP27368194A
Publication Date:
July 28, 1995
Filing Date:
November 08, 1994
Export Citation:
Assignee:
PHILIPS ELECTRONICS NV
International Classes:
H01J43/04; H01J43/06; H01J43/20; H01J43/22; (IPC1-7): H01J43/20; H01J43/06
Attorney, Agent or Firm:
Akihide Sugimura (5 outside)