US 12,087,569 B2
Time-of-flight mass spectrometry device and analysis method
Takuro Kishida, Kyoto (JP); Yasushi Aoki, Kyoto (JP); and Toshitaka Kawai, Kyoto (JP)
Assigned to SHIMADZU CORPORATION, Kyoto (JP)
Appl. No. 17/768,747
Filed by SHIMADZU CORPORATION, Kyoto (JP)
PCT Filed Aug. 17, 2020, PCT No. PCT/JP2020/030983
§ 371(c)(1), (2) Date Apr. 13, 2022,
PCT Pub. No. WO2021/090547, PCT Pub. Date May 14, 2021.
Claims priority of application No. 2019-201748 (JP), filed on Nov. 6, 2019.
Prior Publication US 2024/0120190 A1, Apr. 11, 2024
Int. Cl. H01J 49/40 (2006.01); H01J 49/02 (2006.01)
CPC H01J 49/40 (2013.01) [H01J 49/022 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A time-of-flight mass spectrometry device comprising:
an electrode to which a DC high voltage is applied in order to form an ion flight space; and
a high voltage power supply device that applies the high voltage to the electrode, wherein
the high voltage power supply device includes
a high voltage generating circuit that generates the high voltage, and
a voltage control circuit that is selectively set to a first mode in which the high voltage generating circuit is controlled such that the high voltage has first convergence responsiveness and first stability or a second mode in which the high voltage generating circuit is controlled such that the high voltage has second convergence responsiveness that is lower than the first convergence responsiveness and second stability that is higher than the first stability.