title: Development of an (X, eX) spectrometer for measuring the energies of the scattered photon and recoil electron.
abstract: 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.
authors.affiliation: Department of Synchrotron Radiation Science, The Graduate University for Advanced Studies, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Itou
authors.forename: S
authors.initials: S
authors.lastname: Kishimoto
authors.forename: H
authors.initials: H
authors.lastname: Kawata
authors.forename: M
authors.initials: M
authors.lastname: Ozaki
authors.forename: H
authors.initials: H
authors.lastname: Sakurai
authors.forename: F
authors.initials: F
authors.lastname: Itoh