Helge Johansen

33 papers and 506 indexed citations i.

About

Helge Johansen is a scholar working on Atomic and Molecular Physics, and Optics, Materials Chemistry and Electronic, Optical and Magnetic Materials. According to data from OpenAlex, Helge Johansen has authored 33 papers receiving a total of 506 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Atomic and Molecular Physics, and Optics, 10 papers in Materials Chemistry and 10 papers in Electronic, Optical and Magnetic Materials. Recurrent topics in Helge Johansen’s work include Advanced Chemical Physics Studies (14 papers), Spectroscopy and Quantum Chemical Studies (6 papers) and Photochemistry and Electron Transfer Studies (4 papers). Helge Johansen is often cited by papers focused on Advanced Chemical Physics Studies (14 papers), Spectroscopy and Quantum Chemical Studies (6 papers) and Photochemistry and Electron Transfer Studies (4 papers). Helge Johansen collaborates with scholars based in Denmark, Sweden and United States. Helge Johansen's co-authors include Ulf Wahlgren, Jens Peder Dahl, Irene Shim, Sten Rettrup, C. J. Ballhausen, Bjoern Aakermark, B. Roos, Rolf W. Berg, Milton Tamres and Björn O. Roos and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Physical Chemistry and Chemical Physics Letters.

In The Last Decade

Co-authorship network of co-authors of Helge Johansen i

Fields of papers citing papers by Helge Johansen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helge Johansen. 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 Helge Johansen. The network helps show where Helge Johansen may publish in the future.

Countries citing papers authored by Helge Johansen

Since Specialization
Citations

This map shows the geographic impact of Helge Johansen'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 Helge Johansen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helge Johansen more than expected).

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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