Speaker
Gao-Yu Hsiung
(National Synchrotron Radiation Research Center)
Description
Exposure of synchrotron radiation on the vacuum chambers induces high yield of photoelectrons and the consequent increase of pressure from stimulated gas desorption. Characterization of the surface quality of vacuum chambers, either after chemical cleaning or with thin film coating, by synchrotron radiation exposure at a beamline is powerful and sensitive. In this study, analysis of photo-desorption and photoelectron yield for various vacuum chambers, metallic tubes with or without NEG-coatings, at the BL19B-beamline of Taiwan Light Source (TLS) with critical photon energy of 2.14 keV will be described and compared.
| Region represented | Asia |
|---|---|
| Paper preparation format | Word |
Author
Gao-Yu Hsiung
(National Synchrotron Radiation Research Center)
Co-authors
Che-Kai Chan
(National Synchrotron Radiation Research Center)
Chia-Mu Cheng
(National Synchrotron Radiation Research Center)
Chin Shueh
(National Synchrotron Radiation Research Center)
Reza Valizadeh
(Science and Technology Facilities Council)
