Time-of-flight photoelectron spectroscopy of gases using synchrotron radiation

Abstract

A gas-phase time-of-flight (TOF) photoelectron spectrometer has been developed for use with synchrotron radiation. The excellent time structure of the synchrotron radiation at the Stanford Positron Electron Accelerator Ring (SPEAR) has been used as the time base for the TOF measurements. The TOF analyzer employs two multichannel plates (MCPs) in tandem as a fast electron multiplier with a matched 50-Omega anode to form an electron detector with a timing resolution of </=70 ps. The spectrometer is presently capable of analyzing electrons over a wide energy range (1-50 eV) at medium energy resolution (</=5%) and high angular resolution (+/-3 degrees ).

Core-level photoelectron and Auger shape-resonance phenomena in CO, CO2, CF4, and OCS

“…19 Briefly, gaseous samples were excited by photons from the grazing-; nci dence 11 grasshopper 11 monochromator on Beam Line I I I-1 at the Stanford Synchrotron Radiation Laboratory. 20 The monochromator was operated with a 1200 £/mm holographically-ruled grating.…”

Photoemission from Xe in the vicinity of the 4dCooper minimum

“…The experiment was performed at the Stanford Synchrotron Radiation Laboratory with the same time-of-flight (TOF) apparatus 31 and experimental conditions used in the previous work on CH31 (Ref. 30) and Kr.…”

Photoionization mass spectroscopy of Ne dimers

“…This window isolation·system was also equipped with an interlocked fast-closing gate valve to protect against vacuum failure, and has been described in detail. 18 The monochromatic photon beam was focused to an image approximately 1 mm x 3 mm in the interaction region.…”