학술논문
Search for isotope effects in projectile and target ionization in swift He$^+$ on H$_2$ or D$_2$ collisions
Document Type
Working Paper
Author
Source
Phys. Rev. A 89, 032702 (2014)
Subject
Language
Abstract
Using the cold target recoil ion momentum spectroscopy (COLTRIMS) technique, we have measured the simultaneous projectile and target ionization in collisions of He$^+$ projectiles with a mixture of gaseous H$_2$ and D$_2$ for an incident projectile energy of 650 keV. Motivated by Cooper et al. [Phys. Rev. Lett. 100, 043204 (2008)], we look for differences in the ionization cross section of the two isotopes with the highest resolution and statistical significance. Contributions of the electron-electron and electron-nucleus interactions have been clearly separated kinematically by measuring the longitudinal and transverse momentum of the recoiling ion. We find no significant isotope effect in any of our momentum distributions.
Comment: 13 pages, 6 figures
Comment: 13 pages, 6 figures