| AVS 61st International Symposium & Exhibition | |
| 2D Materials Focus Topic | Thursday Sessions |
| Session 2D-ThP |
| Session: | 2D Materials Poster Session |
| Presenter: | René Heller, Helmholtz-Zentrum Dresden - Rossendorf, Germany |
| Authors: | R. Heller, Helmholtz-Zentrum Dresden - Rossendorf, Germany R.A. Wilhelm, Helmholtz-Zentrum Dresden - Rossendorf, Germany E. Gruber, TU Wien - Vienna University of Technology, Austria R. Ritter, TU Wien - Vienna University of Technology, Austria S. Facsko, Helmholtz-Zentrum Dresden - Rossendorf, Germany F. Aumayr, TU Wien - Vienna University of Technology, Austria |
| Correspondent: | Click to Email |
The interaction of slow highly charged ions (HCI) with solid surfaces has been excessively investigated within the recent past. Numerous systematic experiments on the nano structure creation by HCI impact have been carried out and revealed in a variety of different models describing phenomena as the creation of nano hillocks, mono atomic deep pits and etch pits on different kind of (bulk) materials [1-5].
Recently, we have investigated the interaction of slow HCI with one nanometer thin carbon nano sheets. We could show that HCIs can efficiently induce the creation of nm-sized pores in these membranes [6]. However, the extremely small thickness of this kind of target offered us a second opportunity - the observation of the projectile right after the interaction process in terms of its energy loss and charge exchange.
The results of those measurements show an unexpected two-fold ion charge sate distribution after passing the membrane comprising (a) ions with very high charge states (close to the initial one) that almost lost no kinetic energy as well as (b) very low charged ions that lost a significant amount of kinetic energy. The balance of both contributions was found to depend strongly on the initial ion charge state. From these findings we draw a microscopic picture of the interaction process that is presented in the present contribution.
References
[1] A.S. El-Said, R. Heller, W. Meissl, R. Ritter, S. Facsko et al., Phys. Rev. Lett. (2008) 100, 237601
[2] R. Heller, S. Facsko, R. A. Wilhelm and W. Möller, Phys. Rev. Lett.(2008) 101, 096102
[3] A.S. El-Said, R. Heller, F. Aumayr and S. Facsko, Phys. Rev. B(2010) 82, 033403
[4] A.S. El-Said, R. A. Wilhelm, R. Heller, S. Facsko et al., Phys. Rev. Lett.(2012) 109, 117602
[5] F. Aumayr et al., J. Phys.:Cond. Mat.(2011) 23, 393001
[6] R. Ritter, R. A. Wilhelm, M. Stöger-Pollach, R. Heller et al., Appl. Phys. Lett.(2013) 102, 063112