Journal ArticleDOI
Performance of the atomic and molecular physics beamline at the National Synchrotron Radiation Laboratory.
Sisheng Wang,Ruihong Kong,Xiaobin Shan,Yunwu Zhang,Liusi Sheng,Zhenya Wang,Liqing Hao,Shikang Zhou +7 more
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TLDR
An undulator-based beamline, with a high-resolution spherical-grating monochromator (SGM), is connected to the atomic and molecular physics end-station for studying the spectroscopy and dynamics of atoms, molecules and clusters.Abstract:
At the National Synchrotron Radiation Laboratory, The University of Science and Technology of China, an atomic and molecular physics beamline with an energy range of 7.5-124 eV has been constructed for studying the spectroscopy and dynamics of atoms, molecules and clusters. The undulator-based beamline, with a high-resolution spherical-grating monochromator (SGM), is connected to the atomic and molecular physics end-station. This end-station includes a main experimental chamber for photoionization studies and an additional multi-stage photoionization chamber for photoabsorption spectroscopy. A mid-photon flux of 5 x 10(12) photons s(-1) and a high resolving power is provided by this SGM beamline in the energy range 7.5-124 eV. The size of the synchrotron radiation beam spot at the sample is about 0.5 mm in the vertical direction and 1.0 mm in the horizontal direction. Some experimental results of photoionization efficiency spectroscopy and photoabsorption spectroscopy of atoms and molecules are also reported.read more
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Vacuum upgrade and enhanced performances of the double imaging electron/ion coincidence end-station at the vacuum ultraviolet beamline DESIRS
TL;DR: The recent upgrade of the SAPHIRS permanent photoionization end-station at the DESIRS vacuum ultraviolet beamline of synchrotron SOLEIL, whose performances have been enhanced by installing an additional double-skimmer differential chamber, is reported here.
Journal ArticleDOI
A threshold photoelectron-photoion coincidence spectrometer with double velocity imaging using synchrotron radiation
TL;DR: A novel threshold photoelectron-photoion coincidence (TPEPICO) imaging spectrometer at the U14-A beamline of the Hefei National Synchrotron Radiation Laboratory is presented, in which a repelling electric field using an extra lens is applied to magnify images of photoelectrons instead of traditional accelerating electric field in order to suppress the contribution of energetic electrons.
Journal ArticleDOI
Comprehensive study of the low-temperature oxidation chemistry by synchrotron photoionization mass spectrometry and gas chromatography
TL;DR: In this paper , a jet-stirred reactor (JSR) system was developed to combine the synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) and gas chromatography (GC) analysis.
Journal ArticleDOI
Comprehensive study of the low-temperature oxidation chemistry by synchrotron photoionization mass spectrometry and gas chromatography
TL;DR: In this paper, a jet-stirred reactor (JSR) system was developed to combine the synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) and gas chromatography (GC) analysis.
Journal ArticleDOI
Thermal Desorption/Tunable Vacuum–Ultraviolet Time-of-Flight Photoionization Aerosol Mass Spectrometry for Investigating Secondary Organic Aerosols in Chamber Experiments
TL;DR: The potential of TD-VUV-TOF-PIAMS for direct molecular characterization of SOAs in smog chamber experiments is illustrated by real-time analysis of the mass spectra of SoAs compared with previous off-line measurements.
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A high resolution photoionization study of Ne and Ar: Observation of mass analyzed threshold ions using synchrotron radiation and direct current electric fields
TL;DR: In this article, the photoionization efficiency (PIE) spectrum for Ne in the energy range of 21.56-21.67 eV at a wavelength resolution of 0.3 meV was obtained using 0.76 and 2.4 V/cm electric fields.