Trygve Helgaker
Impact in
- Atomic and Molecular Physics, and Optics top 0.01%
- Advanced Chemical Physics Studies
- Spectroscopy and Quantum Chemical Studies
- Quantum, superfluid, helium dynamics
- Physical and Theoretical Chemistry top 0.02%
- Photochemistry and Electron Transfer Studies
Papers in
-
- Advanced Chemical Physics Studies 251
- Spectroscopy and Quantum Chemical Studies 120
- Quantum, superfluid, helium dynamics 38
- Spectroscopy 121
- Advanced NMR Techniques and Applications 61
- Molecular spectroscopy and chirality 29
- Co-authors
- Poul JørgensenJeppe OlsenWim KlopperKenneth RuudHenrik KochPoul Jo rgensenAsger HalkierMichał Jaszuński
In The Last Decade
Trygve Helgaker
324 papers receiving 27.9k citations
Hit Papers
Peers
Comparison fields: 5 of 144
- Atomic and Molecular Physics, and Optics 20.1k
- Physical and Theoretical Chemistry 5.5k
- Spectroscopy 10.1k
- Inorganic Chemistry 2.8k
- Organic Chemistry 4.8k
Countries citing papers authored by Trygve Helgaker
This map shows the geographic impact of Trygve Helgaker'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 Trygve Helgaker with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Trygve Helgaker more than expected).
Fields of papers citing papers by Trygve Helgaker
This network shows the impact of papers produced by Trygve Helgaker. 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 Trygve Helgaker. The network helps show where Trygve Helgaker may publish in the future.
Co-authors
The 25 scholars most cited alongside Trygve Helgaker, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
| # | Work | ||
|---|---|---|---|
| 1 | 2025 | 2 | |
| 2 | 2023 | 3 | |
| 3 | 2023 | 1 | |
| 4 | 2020 | 29 | |
| 5 | 2019 | 17 | |
| 6 | 2019 | 25 | |
| 7 | 2018 | 24 | |
| 8 | 2016 | 7 | |
| 9 | 2015 | 2 | |
| 10 | 2012 | 40 | |
| 11 | 2012 | 6 | |
| 12 | 2008 | 213 | |
| 13 | 2008 | 10 | |
| 14 | 2007 | 83 | |
| 15 | 2007 | 29 | |
| 16 | 2006 | 143 | |
| 17 | 2004 | 66 | |
| 18 | 2003 | 16 | |
| 19 | 2001 | 10 | |
| 20 | Full Cl calculations of magnetic properties of the H2 molecule in the B(1)Sigma(+)-u state | 1998 | 3 |
About Trygve Helgaker
Trygve Helgaker is a scholar working on Atomic and Molecular Physics, and Optics, Spectroscopy, Physical and Theoretical Chemistry, Electronic, Optical and Magnetic Materials and Inorganic Chemistry, having authored 327 papers that have together received 28.4k indexed citations. Recurring topics across this work include Advanced Chemical Physics Studies (251 papers), Spectroscopy and Quantum Chemical Studies (120 papers), Advanced NMR Techniques and Applications (61 papers), Quantum, superfluid, helium dynamics (38 papers), Molecular spectroscopy and chirality (29 papers), Inorganic Fluorides and Related Compounds (27 papers), Magnetism in coordination complexes (27 papers) and Molecular Junctions and Nanostructures (25 papers). The work is most often cited by research in Atomic and Molecular Physics, and Optics (20.1k citations), Physical and Theoretical Chemistry (5.5k citations), Spectroscopy (10.1k citations), Inorganic Chemistry (2.8k citations) and Organic Chemistry (4.8k citations). Trygve Helgaker has collaborated with scholars based in Norway, Denmark and Sweden. Frequent co-authors include Poul Jørgensen, Jeppe Olsen, Wim Klopper, Kenneth Ruud, Henrik Koch, Poul Jo rgensen, Asger Halkier, Michał Jaszuński, Hans Jørgen Aa. Jensen and Jozef Noga. Their work appears in journals such as The Journal of Chemical Physics, Chemical Physics Letters, Molecular Physics, Theoretical Chemistry Accounts and The Journal of Physical Chemistry A.
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.