Abstract
We have developed a new kind of recoil ion momentum spectroscopy technique, using a precooled supersonic gas jet target, to determine state selective, scattering angle dependent cross sections for swift ion-atom collisions ( on He), by measuring the transverse and longitudinal momentum of the recoil ion. A longitudinal momentum resolution of was achieved, about a factor of 30 better than ever obtained before, which enables a clear separation of K and L shell capture. In the transverse direction a resolution corresponding to a projectile scattering angle uncertainty of was obtained.
- Received 15 July 1994
DOI:https://doi.org/10.1103/PhysRevLett.74.2200
©1995 American Physical Society