Abstract
We have measured the ratio of cross sections for double to single ionization of helium by Compton scattering, , at a photon energy of 58 keV using cold target recoil ion momentum spectroscopy. We find a value that is in agreement with the asymptotic limits predicted by Andersson and Burgdörfer [Phys. Rev. A 50, R2810 (1994)] and Surić et al. [Phys. Rev. Lett. 73, 790 (1994)].
- Received 21 February 1996
DOI:https://doi.org/10.1103/PhysRevLett.76.4685
©1996 American Physical Society