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Figure 2
Particle-beam profiles. (a) The pressure in the interaction chamber measured as a function of distance between the ADL exit and the skimmer using the z motion of the manipulator – measured with orifices of different sizes. (b) The Cl 2p photoelectron spectrum of NaCl particles measured using orifices of different sizes but with all other conditions unchanged. (c) The measured particle-beam profile is fitted with a Lorentzian function and is determined to have an FWHM of ∼0.5 mm. (d) The properties of the beam profile (background-subtracted particle-beam peak height, FWHM and background counts) are plotted versus the ADL distance to skimmer. By moving the manipulator closer to the skimmer, FWHM decreases, peak height increases and background counts increase.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 31| Part 5| September 2024| Pages 1382-1392
https://doi.org/10.1107/S1600577524005411
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