Open AccessDevelopment of an (X, eX) spectrometer for measuring the energies of the scattered photon and recoil electron
Author(s) -
Itou Masayoshi,
Kishimoto Shunji,
Kawata Hiroshi,
Ozaki Makoto,
Sakurai Hiroshi,
Itoh Fumitake
Publication year - 1998
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049597017913
Subject(s) - recoil , spectrometer , physics , electron spectrometer , photon , electron , atomic physics , compton scattering , momentum (technical analysis) , photon energy , nuclear physics , resolution (logic) , optics , cathode ray , finance , artificial intelligence , computer science , economics
The design and performance of a new spectrometer for coincidence measurements between the Compton scattered photon and the recoil electron are described. Coincidence measurements give direct information on the three‐dimensional electron momentum density (EMD) of condensed matter. The present spectrometer measures energy spectra of both the photon and the electron. The energy spectrum of electrons is measured by a time‐of‐flight method using single‐bunch operation at the Photon Factory Accumulator Ring (PF‐AR). The energy resolution obtained for the recoil electron is 190 eV, which is better than that of the photon detector, so that a momentum resolution of the three‐dimensional EMD of 0.3 atomic units can be achieved.