Author:
Mikami Riki,Nagata Yugo,Sada Yuhi,Nagashima Yasuyuki
Abstract
Abstract
We studied the transmission of positronium through thin graphene films supported with lacy carbon using an energy-tunable positronium beam recently developed based on photodetachment of positronium negative ions. By analysing the results of the measurements conducted with different number of graphene layers, the transmittance per single-layer graphene without lacy carbon was estimated to be 70% and 74% at 2.3 keV and 3.3 keV, respectively.
Graphical Abstract
Funder
Japan Society for the Promotion of Science
Publisher
Springer Science and Business Media LLC
Subject
Atomic and Molecular Physics, and Optics
Reference21 articles.
1. S.G. Karshenboim, Precision study of positronium: Testing bound state QED theory. Int. J. Mod. Phys. A 19, 3879 (2004)
2. D.B. Cassidy, Experimental progress in positronium laser physics. Eur. Phys. J. D 72, 53 (2018)
3. Y. Nagashima, M. Kakimoto, T. Hyodo, K. Fujiwara, A. Ichimura, T. Chang, J. Deng, T. Akahane, T. Chiba, K. Suzuki, B.T.A. McKee, A.T. Stewart, Thermalization of free positronium atoms by collisions with silica-powder grains, aerogel grains and gas molecules. Phys. Rev. A 52, 258 (1995)
4. H. Saito, T. Hyodo, Quenching of positronium by surface paramagnetic centers in ultraviolet- and positron-irradiated fine oxide grains. Phys. Rev. B 60, 11070 (1999)
5. Y.C. Jean, P.E. Mallon, D.M. Schrader (eds.), Principles and Applications of Positron and Positronium Chemistry (World Scientific, Singapore, 2003)