C. Hopf

2.3k total citations
50 papers, 1.3k citations indexed

About

C. Hopf is a scholar working on Materials Chemistry, Nuclear and High Energy Physics and Computational Mechanics. According to data from OpenAlex, C. Hopf has authored 50 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 38 papers in Materials Chemistry, 22 papers in Nuclear and High Energy Physics and 18 papers in Computational Mechanics. Recurrent topics in C. Hopf's work include Diamond and Carbon-based Materials Research (25 papers), Fusion materials and technologies (21 papers) and Magnetic confinement fusion research (20 papers). C. Hopf is often cited by papers focused on Diamond and Carbon-based Materials Research (25 papers), Fusion materials and technologies (21 papers) and Magnetic confinement fusion research (20 papers). C. Hopf collaborates with scholars based in Germany, France and Finland. C. Hopf's co-authors include W. Jacob, Achim von Keudell, T. Schwarz‐Selinger, Michael Schlüter, Matthias Meier, P. Roubin, C. Martin, C. Pardanaud, V. Rohde and U. Fantz and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Review of Scientific Instruments.

In The Last Decade

C. Hopf

50 papers receiving 1.3k citations

Peers

C. Hopf

EEE

NHEP

M. Shafiq Pakistan

H. Bhuyan Chile

A. Litnovsky Germany

M. Tokitani Japan

Y. Hirooka Japan

C.H. Wu Germany

S. Vepřek Switzerland

A. Kreter Germany

T. Tachibana Japan

S. Hussain Pakistan

M. Shafiq Pakistan

C. Hopf

744 ×0.7

369 ×0.9

EEE

758 ×1.9

376 ×1.1

NHEP

223 ×0.7

Citations per year, relative to C. Hopf C. Hopf (= 1×) peers M. Shafiq

Countries citing papers authored by C. Hopf

Since Specialization

Citations

This map shows the geographic impact of C. Hopf's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by C. Hopf with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites C. Hopf more than expected).

Fields of papers citing papers by C. Hopf

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by C. Hopf. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by C. Hopf. The network helps show where C. Hopf may publish in the future.

Co-authorship network of co-authors of C. Hopf

This figure shows the co-authorship network connecting the top 25 collaborators of C. Hopf. A scholar is included among the top collaborators of C. Hopf based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with C. Hopf. C. Hopf is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Hopf, C., et al.. (2025). Neutral Beam Injection for a tokamak-based Volumetric Neutron Source. Fusion Engineering and Design. 213. 114870–114870. 3 indexed citations

Bachmann, C., T. Franke, B. Heinemann, et al.. (2025). Vacuum pumping concept for quasi-continuous NBI operation at a steady state fusion machine. Fusion Engineering and Design. 213. 114864–114864. 2 indexed citations

Hopf, C., N. den Harder, B. Heinemann, et al.. (2024). Decoupling beam power and beam energy on ASDEX Upgrade NBI with an in-situ variable extraction gap system. Nuclear Fusion. 64(9). 96017–96017. 2 indexed citations

Hopf, C., et al.. (2022). On suitable experiments for demonstrating the feasibility of the beam-driven plasma neutraliser for neutral beam injectors for fusion reactors. Nuclear Fusion. 62(6). 66038–66038. 4 indexed citations

Hopf, C., et al.. (2021). Neutral beam injection for fusion reactors: technological constraints versus functional requirements. Nuclear Fusion. 61(10). 106032–106032. 26 indexed citations

Hartmann, D., S. Äkäslompolo, O. Ford, et al.. (2020). Performance of the first neutral beam injector at the Wendelstein 7-X stellarator. Fusion Engineering and Design. 163. 112115–112115. 13 indexed citations

Harder, N. den, et al.. (2020). Beam formation and transport in the BATMAN Upgrade test facility. Fusion Engineering and Design. 153. 111507–111507. 4 indexed citations

Hopf, C., et al.. (2017). Helium neutral beam injection into ASDEX Upgrade. Fusion Engineering and Design. 123. 281–284. 4 indexed citations

Fröschle, M., et al.. (2016). Optimization of Large Titanium Sublimation Pumps for the Neutral Beam Injection System on AUG and W7-X. IEEE Transactions on Plasma Science. 44(9). 1553–1558. 1 indexed citations

10.

Pardanaud, C., C. Martin, G. Giacometti, et al.. (2013). Long-term H-release of hard and intermediate between hard and soft amorphous carbon evidenced by in situ Raman microscopy under isothermal heating. Diamond and Related Materials. 37. 92–96. 9 indexed citations

11.

Cartry, Gilles, L. Schiesko, C. Hopf, et al.. (2012). Production of negative ions on graphite surface in H2/D2 plasmas: Experiments and srim calculations. Physics of Plasmas. 19(6). 20 indexed citations

12.

Pardanaud, C., G. Giacometti, C. Martin, et al.. (2010). Raman study of CFC tiles extracted from the toroidal pump limiter of Tore Supra. Journal of Nuclear Materials. 415(1). S254–S257. 11 indexed citations

13.

Mayer, M., V. Rohde, K. Sugiyama, et al.. (2009). Carbon balance and deuterium inventory from a carbon dominated to a full tungsten ASDEX Upgrade. Journal of Nuclear Materials. 390-391. 538–543. 51 indexed citations

14.

Schwarz‐Selinger, T., et al.. (2009). Carbon removal from tile gap structures with oxygen glow discharges. Journal of Nuclear Materials. 390-391. 602–605. 8 indexed citations

15.

Hopf, C., Michael Schlüter, & W. Jacob. (2007). Chemical sputtering of carbon films by argon ions and molecular oxygen at cryogenic temperatures. Applied Physics Letters. 90(22). 13 indexed citations

16.

Toussaint, U. von, T. Schwarz‐Selinger, & C. Hopf. (2006). Bayesian Analysis of Ellipsometry Measurements. Max Planck Digital Library. 872. 272–279. 1 indexed citations

17.

Jacob, W., C. Hopf, & Michael Schlüter. (2006). Chemical sputtering of carbon materials due to combined bombardment by ions and atomic hydrogen. Physica Scripta. T124. 32–36. 40 indexed citations

18.

Hopf, C., T. Schwarz‐Selinger, W. Jacob, & Achim von Keudell. (2000). Surface loss probabilities of hydrocarbon radicals on amorphous hydrogenated carbon film surfaces. Journal of Applied Physics. 87(6). 2719–2725. 90 indexed citations

19.

Hopf, C., et al.. (1999). Surface loss probabilities of the dominant neutral precursors for film growth in methane and acetylene discharges. Applied Physics Letters. 74(25). 3800–3802. 46 indexed citations

20.

Keudell, Achim von, C. Hopf, T. Schwarz‐Selinger, & W. Jacob. (1999). Surface loss probabilities of hydrocarbon radicals on amorphous hydrogenated carbon film surfaces: Consequences for the formation of re-deposited layers in fusion experiments. Nuclear Fusion. 39(10). 1451–1462. 95 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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