Science Explorer Back to mapMap
Discussion
Researcher · University of Oslo · Norway

Trygve Ulf Helgaker

Trygve Ulf Helgaker publishes mostly in Atomic and Molecular Physics, and Optics, Spectroscopy and Physical and Theoretical Chemistry, on topics such as Advanced Chemical Physics Studies, Spectroscopy and Quantum Chemical Studies and Advanced NMR Techniques and Applications.

ORCID 0000-0002-5032-8392 OpenAlex
World rank
#53,361
of 7,710,434 ranked researchers
Rank in Norway
#228
of 33,005
Works
437
Citations
37k
Citations per work
85.3
h-index
89
i10-index 297Top 0.2% in Atomic and Molecular Physics, and Optics
Trygve Ulf Helgaker

What does Trygve Ulf Helgaker research?

Trygve Ulf Helgaker's work is mostly in Physics and Astronomy (44%), Chemistry (23%), Materials Science (10%).

Physical Sciences: 336 works · 76.9% of their workPhysics and Astronomy: 191 works · 43.8% of their workAtomic and Molecular Physics, and Optics: 191 works · 43.8% of their workChemistry: 100 works · 22.9% of their workSpectroscopy: 55 works · 12.6% of their workPhysical and Theoretical Chemistry: 26 works · 6.0% of their workOrganic Chemistry: 19 works · 4.3% of their workMaterials Science: 45 works · 10.2% of their workElectronic, Optical and Magnetic Materials: 22 works · 5.1% of their workMaterials Chemistry: 22 works · 5.1% of their workEverything else: 101 works · 23.1% of their workTHEIR WORKTrygve UlfHelgaker437works
Physical Sciences77%

Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.

The fields and subfields, with their numbers
    1. Physics and Astronomy19143.8%
    2. Chemistry10022.9%
    3. Materials Science4510.2%
  2. Everything else10123.1%
  1. 1Atomic and Molecular Physics, and Optics44% of their works
  2. 2Spectroscopy13% of their works
  3. 3Physical and Theoretical Chemistry6% of their works
  4. 4Materials Chemistry5% of their works
  5. 5Electronic, Optical and Magnetic Materials5% of their works
  6. 6Organic Chemistry4% of their works

Research topics

Which keywords describe Trygve Ulf Helgaker's research?

The keywords of their largest research topics: Density Functional Theory, Ab Initio Parametrization, Dispersion Correction, Photosynthesis, Quantum Coherence, NMR Spectroscopy, Solid-State NMR and Electron Transport.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.

All 18 words, with their numbers
  1. Density Functional Theory3242 topics
  2. Ab Initio Parametrization2871 topic
  3. Dispersion Correction2871 topic
  4. Photosynthesis1331 topic
  5. Quantum Coherence1331 topic
  6. NMR Spectroscopy671 topic
  7. Solid-State NMR671 topic
  8. Electron Transport632 topics
  9. Helium Nanodroplets411 topic
  10. Quantum Turbulence411 topic
  11. Absolute Configuration371 topic
  12. Chiroptical Spectroscopy371 topic
  13. Lanthanide Complexes341 topic
  14. Single-Molecule Magnets341 topic
  15. Fluoride Ion Batteries321 topic
  16. Noble Gas Compounds321 topic
  17. Molecular Electronics291 topic
  18. Self-Assembled Monolayers291 topic

Where does Trygve Ulf Helgaker work?

Trygve Ulf Helgaker's main affiliation in the publication record is University of Oslo, Norway.

How many publications and citations does Trygve Ulf Helgaker have?

OpenAlex counts 437 works and 37,296 citations for Trygve Ulf Helgaker, an h-index of 89, ranking #53,361 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.

Discussion

Ask a question or share a note about Trygve Ulf Helgaker. Posts are plain text and can be reported.