T.‐K. HA

1.0k total citations
44 papers, 874 citations indexed

About

T.‐K. HA is a scholar working on Atomic and Molecular Physics, and Optics, Spectroscopy and Atmospheric Science. According to data from OpenAlex, T.‐K. HA has authored 44 papers receiving a total of 874 indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Atomic and Molecular Physics, and Optics, 25 papers in Spectroscopy and 12 papers in Atmospheric Science. Recurrent topics in T.‐K. HA's work include Advanced Chemical Physics Studies (28 papers), Molecular Spectroscopy and Structure (21 papers) and Atmospheric Ozone and Climate (11 papers). T.‐K. HA is often cited by papers focused on Advanced Chemical Physics Studies (28 papers), Molecular Spectroscopy and Structure (21 papers) and Atmospheric Ozone and Climate (11 papers). T.‐K. HA collaborates with scholars based in Switzerland, South Korea and Germany. T.‐K. HA's co-authors include Hs. H. Günthard, A. Bauder, Lauri Halonen, Rolf Meyer, F. Gräf, Richard R. Ernst, H. Hollenstein, R. Gunde, M. Oldani and P. Felder and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Chemical Physics and SHILAP Revista de lepidopterología.

In The Last Decade

T.‐K. HA

42 papers receiving 826 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
T.‐K. HA Switzerland 18 533 409 199 155 138 44 874
Robert Kołos Poland 22 717 1.3× 580 1.4× 290 1.5× 132 0.9× 196 1.4× 90 1.3k
J. T. Snodgrass United States 18 840 1.6× 315 0.8× 202 1.0× 144 0.9× 74 0.5× 27 1.1k
Christopher A. Parr United States 12 533 1.0× 195 0.5× 143 0.7× 140 0.9× 157 1.1× 13 807
Fred Mulder Netherlands 14 571 1.1× 285 0.7× 160 0.8× 151 1.0× 89 0.6× 15 759
R. S. Fellers United States 12 768 1.4× 484 1.2× 106 0.5× 196 1.3× 45 0.3× 15 967
David Robbins United States 22 773 1.5× 376 0.9× 141 0.7× 73 0.5× 103 0.7× 55 1.5k
Julia A. Davies United Kingdom 21 815 1.5× 440 1.1× 126 0.6× 215 1.4× 52 0.4× 47 1.5k
Linda Feketeová Austria 19 502 0.9× 476 1.2× 145 0.7× 50 0.3× 119 0.9× 67 979
Haydée Valdés Spain 22 764 1.4× 503 1.2× 386 1.9× 89 0.6× 345 2.5× 39 1.5k
Federico Palazzetti Italy 23 793 1.5× 573 1.4× 110 0.6× 144 0.9× 98 0.7× 73 1.2k

Countries citing papers authored by T.‐K. HA

Since Specialization
Citations

This map shows the geographic impact of T.‐K. HA'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 T.‐K. HA with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T.‐K. HA more than expected).

Fields of papers citing papers by T.‐K. HA

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by T.‐K. HA. 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 T.‐K. HA. The network helps show where T.‐K. HA may publish in the future.

Co-authorship network of co-authors of T.‐K. HA

This figure shows the co-authorship network connecting the top 25 collaborators of T.‐K. HA. A scholar is included among the top collaborators of T.‐K. HA 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 T.‐K. HA. T.‐K. HA is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
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Chae, Kwon Seok, Min Ju Kang, Byeol Ryu, et al.. (2010). Opposite functions of HIF-α isoforms in VEGF induction by TGF-β1 under non-hypoxic conditions. Oncogene. 30(10). 1213–1228. 49 indexed citations
4.
Driesner, Thomas, T.‐K. HA, & Terry M. Seward. (2000). Oxygen and hydrogen isotope fractionation by hydration complexes of Li+, Na+, K+, Mg2+, F−, Cl−, and Br−: a theoretical study. Geochimica et Cosmochimica Acta. 64(17). 3007–3033. 38 indexed citations
5.
Maerker, Christoph, Paul von Ragué Schleyer, Klaus R. Liedl, et al.. (1997). A critical analysis of electronic density functionals for structural, energetic, dynamic, and magnetic properties of hydrogen fluoride clusters. Journal of Computational Chemistry. 18(14). 1695–1719. 77 indexed citations
6.
HA, T.‐K., et al.. (1997). Microwave spectra of isotopic N-methylpyrroles, quadrupole coupling constants and substitution structure. Journal of Molecular Structure. 413-414. 93–100. 10 indexed citations
7.
HA, T.‐K., et al.. (1992). Microwave and millimeter-wave spectra, electric dipole moment, and internal rotation effects of methyl hydroperoxide. The Journal of Chemical Physics. 97(9). 6168–6180. 18 indexed citations
8.
Gunde, R., et al.. (1991). Consistent force field modeling of matrix-isolated molecules: site dependence of normal vibrations of gauche-1,2-difluoroethane:(argon)364. The Journal of Physical Chemistry. 95(7). 2802–2810. 12 indexed citations
9.
Hutter, Jürg, Hans Peter Lüthi, & T.‐K. HA. (1991). Ab initio CI calculation of the electronic states of HOOH: oscillator strengths and optical rotatory strengths. Journal of Molecular Structure THEOCHEM. 234. 515–523. 4 indexed citations
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Halonen, Lauri & T.‐K. HA. (1988). A b i n i t i o calculation and anharmonic force field of hypochlorous acid, HOCl. The Journal of Chemical Physics. 88(6). 3775–3779. 23 indexed citations
12.
Halonen, Lauri & T.‐K. HA. (1988). Equilibrium structure and anharmonic force field of hypofluorous acid (HOF). The Journal of Chemical Physics. 89(8). 4885–4888. 36 indexed citations
13.
Groner, P., R. Gunde, T.‐K. HA, & A. Bauder. (1987). Microwave spectrum, dipole moment and AB initio structure of iminopyruvonitrile (CH3C(CN)NH). Chemical Physics Letters. 139(5). 479–484. 6 indexed citations
14.
HA, T.‐K., et al.. (1986). Microwave spectrum, electric dipole moment, internal rotation barrier, and molecular structure of methyl hydrodisulfide. Journal of Molecular Spectroscopy. 115(2). 353–365. 7 indexed citations
15.
Hollenstein, H., T.‐K. HA, & Hs. H. Günthard. (1986). IR induced conversion of rotamers, matrix spectra, AB initio calculation of conformers, assignment and valence force field of trans glycolic acid. Journal of Molecular Structure. 146. 289–307. 46 indexed citations
16.
Gunde, R., et al.. (1986). Structural parameter relaxation and pucker mode—internal mode coupling in the four-ring molecules cyclobutanol, cyclobutylfluoride and cyclobutylchloride. Spectrochimica Acta Part A Molecular Spectroscopy. 42(2-3). 259–273. 4 indexed citations
17.
Oldani, M., T.‐K. HA, & A. Bauder. (1983). ChemInform Abstract: MICROWAVE SPECTRUM, DIPOLE MOMENT, AND SUBSTITUTION STRUCTURE OF PEROXYFORMIC ACID. Chemischer Informationsdienst. 14(21). 1 indexed citations
18.
Oldani, M., T.‐K. HA, & A. Bauder. (1983). Microwave spectrum, dipole moment, and substitution structure of peroxyformic acid. Journal of the American Chemical Society. 105(3). 360–365. 22 indexed citations
19.
HA, T.‐K., et al.. (1977). N-methylmethyleneimine and ethylideneimine: Gas- and matrix-infrared spectra, AB initio calculations and thermodynamic properties. Chemical Physics. 21(3). 327–347. 73 indexed citations
20.
Gräf, F., et al.. (1977). Kinetics and intramolecular dynamics of photoradical in solution: An ESR, MESR and quantum chemical study. Chemical Physics. 23(3). 327–341. 22 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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