Effect of X‐ray spot size on liquid jet photoelectron spectroscopy. (30th September 2015)

• Record Type: Journal Article
• Authors: Olivieri, Giorgia; Goel, Alok; Kleibert, Armin; Brown, Matthew A.
• Is Part Of: Journal of synchrotron radiation. Volume 22:Part 6(2015)
• Page Start: 1528
• Page End: 1530
• Publication Date: 2015-09-30
• Subjects: near‐ambient pressure photoemission -- gas‐phase photoemission -- liquid–air interface; Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S1600577515016306
• Languages: English
• ISSNs: 0909-0495

Abstract

Abstract : A 30 µm pinhole is introduced in the intermediate focus of the SIM beamline at the Swiss Light Source to improve the spot size at the second downstream focus, which is used here for liquid jet X‐ray photoelectron spectroscopy experiments. The 30 µm pinhole reduces the beam dimensions from 250 (v) × 100 (h) µm to 75 × 45 µm for a vertical exit slit of 100 µm. The smaller X‐ray spot results in a substantial decrease in the gas‐phase contribution of the spectra from 40% down to 20% and will help to simplify the interpretation and peak assignments of future experiments.