This map shows the geographic impact of O. Vollmer'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 O. Vollmer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites O. Vollmer more than expected).
This network shows the impact of papers produced by O. Vollmer. 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 O. Vollmer. The network helps show where O. Vollmer may publish in the future.
Co-authorship network of co-authors of O. Vollmer
This figure shows the co-authorship network connecting the top 25 collaborators of O. Vollmer.
A scholar is included among the top collaborators of O. Vollmer 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 O. Vollmer. O. Vollmer is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Heinemann, B., B. Beaumont, J. Bucalossi, et al.. (1998). Large-Area, High-Transparency Extraction System for Negative Ions. MPG.PuRe (Max Planck Society). 433–436.8 indexed citations
7.
Beaumont, B., J. Bucalossi, P. Libeyre, et al.. (1998). Progress of the "BATMAN" RF Source for Negative Hydrogen Ions. MPG.PuRe (Max Planck Society). 429–432.3 indexed citations
8.
Vollmer, O., B. Beaumont, A. Staebler, et al.. (1998). Commissioning and Performance of the New ASDEX Upgrade Neutral Beam Injector. MPG.PuRe (Max Planck Society). 449–452.14 indexed citations
Vollmer, O., et al.. (1990). Long-Pulse Heating in ASDEX L-and H-Mode Discharges. Max Planck Institute for Plasma Physics. 295–298.1 indexed citations
12.
Kallenbach, A., H. M. Mayer, G. Fußmann, et al.. (1990). Momentum Transport Studies on ASDEX. Max Planck Institute for Plasma Physics. 183–186.1 indexed citations
Zengliang, Yu, A. Stäbler, & O. Vollmer. (1982). Neutral Beam Power Measurements Inside the ASDEX Torus.. Max Planck Institute for Plasma Physics.1 indexed citations
15.
Staebler, A., et al.. (1981). Performance of the ASDEX neutral beam injector.1 indexed citations
16.
Gloeckler, G., D. Hovestadt, B. Klecker, O. Vollmer, & C. Y. Fan. (1975). The energy spectra of protons and alpha particles above 300 keV/nucleon during quiet times. International Cosmic Ray Conference. 2. 768.6 indexed citations
17.
Hovestadt, D., B. Klecker, O. Vollmer, G. Gloeckler, & C. Y. Fan. (1975). Heavy Particle Emission of Unusual Composition from the Sun. International Cosmic Ray Conference. 5. 1613.2 indexed citations
Hovestadt, D. & O. Vollmer. (1971). A Satellite Experiment for Detecting Low Energy Heavy Cosmic Rays.. 4. 1608.6 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.