Focusing in high-resolution time-of-flight elastic recoil detection analysis

A. J.H. Maas, S.S. Klein, F. P. Rademakers, A. W.E. Minnaert, M. J.A. De Voigt

Research output: Contribution to journalArticleAcademicpeer-review


In the Eindhoven coincident elastic recoil detection analysis by time-of-flight (CERDA-TOF) spectrometer we have improved sensitivity by focusing the recoils onto the detector by a magnetic quadrupole doublet. In order not to disturb the depth resolution, the focusing was limited to the azimuthal direction, perpendicular to the scattering plane (reaction plane). Sensitivity improves by a factor of 5 to about 1 × 1014 atoms/cm2 for carbon in a carbon foil and by a factor of 4 to 1 × 1014 atoms/cm2 for oxygen in a native oxide layer on a 1 μm amorphous Si-layer.

Original languageEnglish
Pages (from-to)588-592
Number of pages5
JournalNuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
Issue number1-4
Publication statusPublished - Sep 1996


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