IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Vacuum Science & Technology Friday Sessions
       Session VST-FrM

Paper VST-FrM6
Photon Induced Desorption Studies on Sputter-deposited Getter Layers

Friday, November 2, 2001, 10:00 am, Room 132

Session: Accelerators Technology, Fusion Machines & Gravitational Wave Detectors
Presenter: V. Baglin, CERN, Switzerland
Authors: V. Baglin, CERN, Switzerland
C. Benvenuti, CERN, Switzerland
P. Chiggiato, CERN, Switzerland
P. Costa Pinto, CERN, Switzerland
N. Hilleret, CERN, Switzerland
A. Rossi, CERN, Switzerland
Correspondent: Click to Email
Two vacuum chambers coated with a thin film of Ti-Zr-V non evaporable getter have been exposed, under normal incidence, to the synchrotron radiation emitted by the bending magnets of EPA (critical energy 194 eV). The coatings were produced using different coating parameters and the configuration of the experimental set-up was conceived to minimize the background signal and to allow the gas desorption and the pumping processes to be disentangled. The measurements have been repeated after heating the coated chambers at progressively higher temperatures up to the complete getter activation. The study has been also extended to cover the influence of the pumped gas load on the desorption yield, providing a quantitative evaluation under the various experimental conditions. The results are presented and compared with those obtained from a bare stainless steel vacuum chamber.