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Findings from Chinese Academy of Sciences Has Provided New Data on Nuclear Physics

February 4, 2014



By a News Reporter-Staff News Editor at Physics Week -- Investigators publish new report on Nuclear Physics. According to news reporting originating from Beijing, People's Republic of China, by VerticalNews correspondents, research stated, "Highly charged (Xe-129(q+), q = 10-30) ion-induced secondary electron emission and formation of nanostructure on the surface of highly oriented pyrolytic graphite (HOPG) have been studied on the 320 kV ECR platform for Highly Charged Ion Beam at IMP-CAS, Lanzhou. The experimental data of the total secondary electron yields are used to separate contributions of kinetic and potential electron yields."

Our news editors obtained a quote from the research from the Chinese Academy of Sciences, "The estimated kinetic electron yields are about 17 and 35 electron/ion by ions with kinetic energies of 600 keV and 5 MeV, respectively. The potential electron yield increases linearly with increasing potential energy of the incident ion. The total electron yield, however, does not depend significantly on kinetic energy. AFM analysis of the HOPG surface bombarded with Xe30+ ions revealed regular hillock like nanostructure."

According to the news editors, the research concluded: "The relationship between hillock size (height and width) and ion's energy (including potential energy and kinetic energy) shows the same trend with the total electron yield which increases with potential energy and is independent on incident kinetic energy."

For more information on this research see: Electron emission and surface etching by slow and medium highly charged ions on HOPG surface. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 2013;317():33-36. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands.

The news editors report that additional information may be obtained by contacting Y.Y. Wang, Univ Chinese Academy Sci, Beijing 100049, People's Republic of China. Additional authors for this research include J.R. Sun, Y.T. Zhao, R. Cheng, J.R. Ren, Y. Yu, X.M. Zhou, Y. Lei, X. Wang, Y.F. Li and G.Q. Xiao.

Keywords for this news article include: Asia, Beijing, Nuclear Physics, People's Republic of China

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Source: Physics Week


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