Journalartikel

Jahr der Veröffentlichung: 2015

Zeitschrift: Physical review A

Bandnummer: 91

Heftnummer: 2

ISSN: 2469-9926

eISSN: 2469-9934

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevA.91.022705

Verlag: American Physical Society

Abstract: 
For the collision system U88+ + N-2 at a collision energy of 90 MeV/u, the energy distribution of electrons being nonradiatively captured from the target into the projectile continuum has been measured under an angle of 0. with respect to the projectile beam axis. This measurement of the electron-capture-to-continuum cusp with the highest effective projectile charge Z(p)(eff) = 88 at a near-relativistic collision velocity of beta approximate to 0.41 is shown to be characterized by a strong asymmetry in the cusp shape. By comparing the data to measurements of the radiative-electron-capture-to-continuum cusp for the same collision system, the opposite asymmetry of the cusp is traced back to the varying underlying mechanisms. The experimental results are compared with the two theoretical calculations available for this process, one of them in the semirelativistic impulse approximation and the other in the nonrelativistic continuum-distorted-wave approach. A corresponding fully relativistic treatment may be motivated by the presented experimental data.

Harvard-Zitierstil: Hillenbrand, P., Hagmann, S., Jakubassa-Amundsen, D., Monti, J., Banas, D., Blumenhagen, K., et al. (2015) Electron-capture-to-continuum cusp in U88+ + N2 collisions, Physical review A, 91(2), Article 022705. https://doi.org/10.1103/PhysRevA.91.022705

APA-Zitierstil: Hillenbrand, P., Hagmann, S., Jakubassa-Amundsen, D., Monti, J., Banas, D., Blumenhagen, K., Brandau, C., Chen, W., Fainstein, P., De Filippo, E., Gumberidze, A., Guo, D., Lestinsky, M., Litvinov, Y., Müller, A., Rivarola, R., Rothard, H., Schippers, S., Schoeffler, M., ...Stoehlker, T. (2015). Electron-capture-to-continuum cusp in U88+ + N2 collisions. Physical review A. 91(2), Article 022705. https://doi.org/10.1103/PhysRevA.91.022705