@article { ISI:A1994MX03200010, title = {A HIGH-SENSITIVITY MOMENTUM DISPERSIVE MULTICHANNEL ELECTRON MOMENTUM SPECTROMETER FOR STUDIES IN EXPERIMENTAL QUANTUM-CHEMISTRY}, journal = {REVIEW OF SCIENTIFIC INSTRUMENTS}, volume = {65}, number = {2}, year = {1994}, month = {FEB}, pages = {349-358}, abstract = {The design and characterization of a high sensitivity multichannel momentum dispersive electron momentum spectrometer is reported. Electron pair coincidences are detected over a +/- 30 degrees range of azimuthal angle at the exit slit of a cylindrical mirror analyzer configured to measure symmetric (theta = 45 degrees) noncoplanar (e,2e) scattering. A position sensitive microchannel plate/resistive anode encoder electron detector and a channeltron electron multiplier are employed in a novel multichannel coincidence detection system based upon detection of {\textquoteleft}{\textquoteright}pile-up{\textquoteright}{\textquoteright} of pairs of timing pulses from the detectors. Proof-of-concept results, exhibiting significantly higher coincidence count rates and statistical precision than have been previously observed in electron momentum spectroscopy, are presented for argon.}, issn = {0034-6748}, doi = {10.1063/1.1145195}, author = {Todd, BR and Lermer, N and Brion, CE} }