公开(公告)号：US20180082829A1

公开(公告)日：2018-03-22

申请号：US15503342

申请日：2016-01-21

Applicant: JAPAN SYNCHROTRON RADIATION RESEARCH INSTITUTE

Inventor： Takayuki MURO ,  Tomohiro MATSUSHITA

IPC: H01J49/48 ,  H01J49/02

CPC classification number: H01J49/488 ,  H01J37/05 ,  H01J37/244 ,  H01J49/022 ,  H01J2237/053 ,  H01J2237/057 ,  H01J2237/24485

Abstract: A retarding potential type energy analyzer including a front grid electrode, reference grid electrode and rear grid electrode sequentially arranged, with a predetermined amount of potential difference given between the reference grid electrode and the front grid electrode to form an upward potential gradient as well as a potential difference given between the reference grid electrode and the rear grid electrode to form a downward potential gradient, the grid electrodes are arranged so that the distance between the reference grid electrode and the rear grid electrode is shorter than the distance between the reference grid electrode and the front grid electrode, or the potential difference between the reference grid electrode and the rear grid electrode is made to be greater than the potential difference between the reference grid electrode and the front grid electrode.