Title:
DISCHARGE IONIZATION DETECTOR AND GAS CHROMATOGRAPH ANALYZER
Document Type and Number:
Japanese Patent JP2022055645
Kind Code:
A
Abstract:
To provide a discharge ionization detector for reliably radiating excitation light to discharge gas concerning a configuration including a cover part on an outer wall of a dielectric tube.SOLUTION: A light source radiates excitation light to discharge gas circulating in a dielectric tube. A ground electrode unit includes a first ground electrode and a second ground electrode arranged to be mutually separated in a tube axial direction of the dielectric tube. A high-voltage electrode is arranged between the first ground electrode and the second ground electrode. A distance between the first ground electrode and the high-voltage electrode is shorter than a distance between the second ground electrode and the high-voltage electrode. A cover part is arranged at a position on an outer wall of the dielectric tube and between the first ground electrode and the high-voltage electrode. The light source radiates excitation light to allow a light axial direction to be directed to a position other than the cover part.SELECTED DRAWING: Figure 1
Inventors:
SHINADA MEGUMI
MATSUOKA SATOSHI
KITANO KATSUHISA
MATSUOKA SATOSHI
KITANO KATSUHISA
Application Number:
JP2020163184A
Publication Date:
April 08, 2022
Filing Date:
September 29, 2020
Export Citation:
Assignee:
SHIMADZU CORP
UNIV OSAKA
UNIV OSAKA
International Classes:
G01N30/64; H01J49/10; H01J49/16
Attorney, Agent or Firm:
Fukami patent office