Title:
MASS ANALYZER AND METHOD FOR MANAGING ELECTRON MULTIPLIER
Document Type and Number:
Japanese Patent JP2019129016
Kind Code:
A
Abstract:
To provide information to be useful when a user of a mass analyzer evaluates degradation of an electron multiplier, to the user.SOLUTION: A total degradation level and a unit degradation level are operated as degradation information by an integration of an output (current or charge) of an electron multiplier 20. The operated degradation information is displayed on a screen as a numerical value or a graph. An applied voltage of the electron multiplier 20 can be changed according to the degradation level. Examples of the unit degradation level include a degradation level per unit time, a degradation level per measurement, a degradation level per calibration, a degradation per user and the like.SELECTED DRAWING: Figure 1
Inventors:
MINAMI YUJI
NAMBA TOSHIAKI
NAMBA TOSHIAKI
Application Number:
JP2018008567A
Publication Date:
August 01, 2019
Filing Date:
January 23, 2018
Export Citation:
Assignee:
JEOL LTD
International Classes:
H01J49/06; G01N27/62; H01J49/26
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office