J.P. Colpa

1.4k total citations
65 papers, 1.2k citations indexed

About

J.P. Colpa is a scholar working on Spectroscopy, Atomic and Molecular Physics, and Optics and Physical and Theoretical Chemistry. According to data from OpenAlex, J.P. Colpa has authored 65 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Spectroscopy, 29 papers in Atomic and Molecular Physics, and Optics and 19 papers in Physical and Theoretical Chemistry. Recurrent topics in J.P. Colpa's work include Advanced NMR Techniques and Applications (24 papers), Advanced Chemical Physics Studies (21 papers) and Molecular spectroscopy and chirality (18 papers). J.P. Colpa is often cited by papers focused on Advanced NMR Techniques and Applications (24 papers), Advanced Chemical Physics Studies (21 papers) and Molecular spectroscopy and chirality (18 papers). J.P. Colpa collaborates with scholars based in Canada, Germany and Netherlands. J.P. Colpa's co-authors include D. Stehlik, James R. Bolton, E. de Boer, J. Α. Α. Ketelaar, Karl H. Hausser, F.P. Temme, Richard E. Brown, D. Schweitzer, E. L. Mackor and C. MacLean and has published in prestigious journals such as The Journal of Chemical Physics, The Journal of Physical Chemistry and Chemical Physics Letters.

In The Last Decade

J.P. Colpa

64 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J.P. Colpa Canada 21 579 563 378 332 285 65 1.2k
Gaston Berthier France 22 936 1.6× 431 0.8× 487 1.3× 293 0.9× 287 1.0× 72 1.6k
L.J. Oosterhoff Netherlands 20 515 0.9× 376 0.7× 406 1.1× 326 1.0× 237 0.8× 39 1.2k
M.S. de Groot Netherlands 19 621 1.1× 369 0.7× 607 1.6× 219 0.7× 421 1.5× 33 1.4k
G. R. Alms United States 15 777 1.3× 566 1.0× 321 0.8× 138 0.4× 335 1.2× 23 1.4k
C. MacLean Netherlands 24 593 1.0× 1.3k 2.3× 359 0.9× 619 1.9× 414 1.5× 151 2.2k
J. Steadman United States 18 901 1.6× 433 0.8× 391 1.0× 122 0.4× 195 0.7× 29 1.2k
Gad Fischer Australia 23 894 1.5× 540 1.0× 571 1.5× 252 0.8× 307 1.1× 91 1.6k
R. A. Bernheim United States 27 1.4k 2.4× 958 1.7× 215 0.6× 228 0.7× 315 1.1× 101 2.2k
G. Berthier France 24 1.0k 1.8× 526 0.9× 588 1.6× 455 1.4× 368 1.3× 106 1.8k
A. Hinchliffe United Kingdom 15 431 0.7× 178 0.3× 263 0.7× 187 0.6× 144 0.5× 80 796

Countries citing papers authored by J.P. Colpa

Since Specialization
Citations

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

Fields of papers citing papers by J.P. Colpa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.P. Colpa. 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 J.P. Colpa. The network helps show where J.P. Colpa may publish in the future.

Co-authorship network of co-authors of J.P. Colpa

This figure shows the co-authorship network connecting the top 25 collaborators of J.P. Colpa. A scholar is included among the top collaborators of J.P. Colpa 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 J.P. Colpa. J.P. Colpa 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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Temme, F.P. & J.P. Colpa. (1992). Spin symmetry and gel'fand patterns of higher SU2×ℓ n groups. Zeitschrift für Physik D Atoms Molecules and Clusters. 23(2). 187–193. 1 indexed citations
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Sur, Sandip K., J.P. Colpa, & J. K. S. Wan. (1986). Optically active free radicals: circular dichroism, optical absorption and emission and ESR studies on optically active 1S(+)- and 1R(−)-camphorquinone radicals. Chemical Physics. 108(1). 133–139. 8 indexed citations
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Bachert, Peter, H. Brunner, Karl H. Hausser, & J.P. Colpa. (1984). Microwave-induced optical nuclear polarization (MI ONP) of benzophenone in dibromodiphenylether. Chemical Physics. 91(3). 435–447. 15 indexed citations
8.
Brown, R. J. C. & J.P. Colpa. (1982). Vibrationally induced nuclear spin relaxation of quadrupolar nuclei. The Journal of Chemical Physics. 77(3). 1501–1504. 10 indexed citations
9.
Dinse, Klaus‐Peter, et al.. (1982). Interpretation of level-anticrossing phenomena in phosphorescence and optical nuclear polarization in organic crystals. Molecular Physics. 46(5). 917–939. 6 indexed citations
10.
Macho, V., J.P. Colpa, & D. Stehlik. (1979). Radical pair formation from excited states in doped aromatic crystals. II. Optical nuclear polarization (ONP) studies. Chemical Physics. 44(1). 113–129. 35 indexed citations
11.
Colpa, J.P. & Richard E. Brown. (1978). The inequality formulation of Hund’s rule and a reinterpretation of singlet–triplet energy differences, generalized for molecules at equilibrium geometry. The Journal of Chemical Physics. 68(9). 4248–4251. 11 indexed citations
12.
Schweitzer, D., et al.. (1975). Transannular interactions in [2,2] phanes as studied by magnetic resonance and optical spectra. Chemical Physics. 11(3). 373–384. 57 indexed citations
13.
Stehlik, D., et al.. (1975). Optical nuclear polarization in molecular crystals through an optical excitation cycle. Chemical Physics. 7(2). 165–186. 23 indexed citations
14.
Colpa, J.P., et al.. (1973). Hund's rule and theZexpansion for the energy, electron repulsion and electron nuclear attraction. Molecular Physics. 25(3). 701–705. 27 indexed citations
15.
Colpa, J.P. & D. Stehlik. (1972). A Mechanism for the Optical Nuclear Spin Alignment in Zero Magnetic Field. Zeitschrift für Naturforschung A. 27(12). 1695–1704. 5 indexed citations
16.
Boer, E. de & J.P. Colpa. (1967). Signs of spin densities and vibronic interactions in 1- and 1,4-alkyl-substituted benzene anions. The Journal of Physical Chemistry. 71(1). 21–28. 35 indexed citations
17.
Colpa, J.P. & E. de Boer. (1963). Spin polarisation versus hyperconjugation in electron spin resonance spectra of substituted aromatic systems. Physics Letters. 5(4). 225–226. 3 indexed citations
18.
Colpa, J.P. & J. Α. Α. Ketelaar. (1958). The absorption intensity of simultaneous vibrational transitions in gas mixtures. Physica. 24(6-10). 1035–1044. 18 indexed citations
19.
Colpa, J.P. & J. Α. Α. Ketelaar. (1958). The pressure-induced rotational absorption spectrum of hydrogen: I. Molecular Physics. 1(1). 14–22. 38 indexed citations
20.
Colpa, J.P. & J. Α. Α. Ketelaar. (1958). The pressure-induced rotational absorption spectrum of hydrogen: II. Molecular Physics. 1(4). 343–357. 54 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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