State Selective Scattering Angle Dependent Capture Cross Sections Measured by Cold Target Recoil Ion Momentum Spectroscopy

Author

Volker Mergel
Reinhard Dorner
Joachim Hermann Ullrich
Ottmar Jagutzki
Sergio Lencinas
S. Nuttgens
Lutz Spielberger
Marc Unverzagt
C. Lewis Cocke
Ronald E. Olson, Missouri University of Science and TechnologyFollow
Michael Schulz, Missouri University of Science and TechnologyFollow
Udo Buck
E. Zanger
W. Theisinger
M. Isser
S. Geis
Horst Schmidt-Bocking

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 ( 0. 25 , ..., , 1 MeV He²⁺ on He), by measuring the transverse and longitudinal momentum of the recoil ion. A longitudinal momentum resolution of ± 0.13 a. u. 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 Δ ϑ P = ±1 μ rad was obtained.

Recommended Citation

V. Mergel and R. Dorner and J. H. Ullrich and O. Jagutzki and S. Lencinas and S. Nuttgens and L. Spielberger and M. Unverzagt and C. L. Cocke and R. E. Olson and M. Schulz and U. Buck and E. Zanger and W. Theisinger and M. Isser and S. Geis and H. Schmidt-Bocking, "State Selective Scattering Angle Dependent Capture Cross Sections Measured by Cold Target Recoil Ion Momentum Spectroscopy," Physical Review Letters, vol. 74, no. 12, pp. 2200 - 2203, American Physical Society (APS), Mar 1995.

The definitive version is available at https://doi.org/10.1103/PhysRevLett.74.2200

Department(s)

Physics

International Standard Serial Number (ISSN)

0031-9007

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 1995 American Physical Society (APS), All rights reserved.

Publication Date

01 Mar 1995