1. Electron-loss-to-continuum cusp in collisions of U$^{89+}$ with N$_{2}$ and Xe
- Author
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Hillenbrand, P. -M., Lyashchenko, K. N., Hagmann, S., Andreev, O. Yu., Banas, D., Benis, E. P., Bondarev, A. I., Brandau, C., De Filippo, E., Forstner, O., Glorius, J., Grisenti, R. E., Gumberidze, A., Guo, D. L., Herdrich, M. O., Lestinsky, M., Litvinov, Yu. A., Pagano, E. V., Petridis, N., Sanjari, M. S., Schury, D., Spillmann, U., Trotsenko, S., Vockert, M., Voitkiv, A. B., Weber, G., and Stöhlker, Th.
- Subjects
Physics - Atomic Physics - Abstract
We study the electron-loss-to-continuum (ELC) cusp experimentally and theoretically by comparing the ionization of U$^{89+}$ projectiles in collisions with N$_2$ and Xe targets, at a beam energy of 75.91 MeV/u. The coincidence measurement between the singly ionized projectile and the energy of the emitted electron is used to compare the shape of the ELC cusp at weak and strong perturbations. A significant energy shift for the centroid of the electron cusp is observed for the heavy target of Xe as compared to the light target of N$_2$. Our results provide a stringent test for fully relativistic calculations of double-differential cross sections performed in the first-order approximation and in the continuum-distorted-wave approach.
- Published
- 2021
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