Willem Siebrand

8.5k total citations · 1 hit paper
188 papers, 7.3k citations indexed

About

Willem Siebrand is a scholar working on Atomic and Molecular Physics, and Optics, Physical and Theoretical Chemistry and Spectroscopy. According to data from OpenAlex, Willem Siebrand has authored 188 papers receiving a total of 7.3k indexed citations (citations by other indexed papers that have themselves been cited), including 147 papers in Atomic and Molecular Physics, and Optics, 77 papers in Physical and Theoretical Chemistry and 50 papers in Spectroscopy. Recurrent topics in Willem Siebrand's work include Spectroscopy and Quantum Chemical Studies (95 papers), Advanced Chemical Physics Studies (86 papers) and Photochemistry and Electron Transfer Studies (69 papers). Willem Siebrand is often cited by papers focused on Spectroscopy and Quantum Chemical Studies (95 papers), Advanced Chemical Physics Studies (86 papers) and Photochemistry and Electron Transfer Studies (69 papers). Willem Siebrand collaborates with scholars based in Canada, Spain and United States. Willem Siebrand's co-authors include Marek Z. Zgierski, Zorka Smedarchina, Giorgio Orlandi, Bryan R. Henry, Antonio Fernández‐Ramos, D. F. Williams, Timothy A. Wildman, R. W. Munn, W. G. Schneider and P.J. Bounds and has published in prestigious journals such as Journal of the American Chemical Society, The Journal of Chemical Physics and Accounts of Chemical Research.

In The Last Decade

Willem Siebrand

186 papers receiving 6.9k citations

Hit Papers

Radiationless Transitions... 1967 2026 1986 2006 1967 100 200 300
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Radiationless Transitions in Polyatomic Molecules. II. Triplet-Ground-State Transitions in Aromatic Hydrocarbons
    1967 390 citations Willem Siebrand The Journal of Chemical Physics profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Willem Siebrand Canada 44 4.3k 3.1k 2.0k 1.6k 1.4k 188 7.3k
S. P. McGlynn United States 42 2.9k 0.7× 2.4k 0.8× 2.6k 1.3× 1.8k 1.1× 1.3k 1.0× 222 7.7k
Noboru Hirota Japan 42 2.4k 0.6× 3.3k 1.1× 2.0k 1.0× 1.2k 0.7× 668 0.5× 269 6.2k
Hiroshi Nakatsuji Japan 53 7.8k 1.8× 2.6k 0.8× 2.1k 1.1× 2.4k 1.5× 1.2k 0.9× 296 10.6k
Keitaro Yoshihara Japan 54 5.1k 1.2× 4.8k 1.5× 2.4k 1.2× 1.7k 1.1× 1.0k 0.7× 285 9.3k
Saburo Nagakura Japan 43 2.0k 0.5× 2.8k 0.9× 1.6k 0.8× 1.6k 1.0× 823 0.6× 247 6.0k
A. C. Albrecht United States 47 4.8k 1.1× 3.0k 0.9× 2.1k 1.1× 2.4k 1.5× 1.4k 1.0× 217 9.0k
Marek Z. Zgierski Canada 55 5.0k 1.2× 3.5k 1.1× 3.1k 1.6× 1.9k 1.2× 1.3k 0.9× 302 10.0k
Eberhard Riedle Germany 48 4.5k 1.0× 2.3k 0.7× 1.6k 0.8× 1.8k 1.1× 1.6k 1.1× 175 7.4k
Mitsuo Itô Japan 44 4.0k 0.9× 2.7k 0.9× 1.2k 0.6× 2.9k 1.8× 596 0.4× 215 6.6k
Horst Köppel Germany 55 8.8k 2.0× 2.9k 0.9× 1.2k 0.6× 2.8k 1.8× 1.2k 0.9× 253 11.1k

Countries citing papers authored by Willem Siebrand

Since Specialization
Citations

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

Fields of papers citing papers by Willem Siebrand

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Willem Siebrand

This figure shows the co-authorship network connecting the top 25 collaborators of Willem Siebrand. A scholar is included among the top collaborators of Willem Siebrand 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 Willem Siebrand. Willem Siebrand 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
1.
Siebrand, Willem, Zorka Smedarchina, Marek Z. Zgierski, & Antonio Fernández‐Ramos. (1999). Proton tunnelling in polyatomic molecules: A direct-dynamics instanton approach. International Reviews in Physical Chemistry. 18(1). 5–41. 97 indexed citations
2.
Siebrand, Willem, Marek Z. Zgierski, Francesco Zerbetto, et al.. (1997). Rotor-vibrator couplings in partially deuterated toluenes. The Journal of Chemical Physics. 106(15). 6279–6287. 8 indexed citations
3.
Smedarchina, Zorka, Willem Siebrand, Marek Z. Zgierski, & Francesco Zerbetto. (1995). Dynamics of molecular inversion: An instanton approach. The Journal of Chemical Physics. 102(18). 7024–7034. 40 indexed citations
4.
Johnston, Linda J., et al.. (1991). Observation and modeling of the recombination kinetics of diphenylmethyl radicals in the cavities of Na-X zeolite. The Journal of Physical Chemistry. 95(24). 10018–10024. 27 indexed citations
5.
Siebrand, Willem, Francesco Zerbetto, & Marek Z. Zgierski. (1990). New assignment of the vibrational structure of the V ← N transition in ethylene-d4. Chemical Physics Letters. 174(2). 119–125. 24 indexed citations
6.
Doba, Takahisa, et al.. (1985). Structural interpretation of non-exponential hydrogen transfer in glassy methanol. Chemical Physics Letters. 115(1). 51–54. 25 indexed citations
7.
Siebrand, Willem & Marek Z. Zgierski. (1984). Analysis of Raman excitation profiles for c i s-(CH)x and-(CD)x polymers. The Journal of Chemical Physics. 81(1). 185–190. 21 indexed citations
8.
Henneker, W. H., Willem Siebrand, & Marek Z. Zgierski. (1983). Quantitative interpretation of the absorption and emission spectra of 1,8-diphenyl-1,3,5,7-octatetraene. The Journal of Chemical Physics. 79(5). 2495–2496. 20 indexed citations
9.
Siebrand, Willem & Marek Z. Zgierski. (1983). Vibronic and multimode effects on the raman excitation profile of a totally symmetric fundamental in the soret band of cytochrome c. Chemical Physics. 77(1). 35–45. 11 indexed citations
10.
Henneker, W. H., M. Pawlikowski, Willem Siebrand, & Marek Z. Zgierski. (1983). Normal-coordinate rotation as a cause of missing bands in molecular electronic spectra. The case of magnesium tetrabenzoporphine. The Journal of Physical Chemistry. 87(24). 4805–4810. 3 indexed citations
11.
Siebrand, Willem & Marek Z. Zgierski. (1979). Franck–Condon effects in resonance Raman spectra and excitation profiles. The Journal of Chemical Physics. 71(9). 3561–3569. 124 indexed citations
12.
Gregory, Allan R. & Willem Siebrand. (1974). A new perturbation approach to coupling between adiabatic states. Chemical Physics Letters. 29(1). 13–16. 16 indexed citations
13.
Siebrand, Willem, et al.. (1974). Triplet excitons as probes for structural imperfections in crystalline anthracene. Chemical Physics Letters. 25(3). 308–311. 26 indexed citations
14.
Orlandi, Giorgio & Willem Siebrand. (1973). Basis-independent matrix elements for radiationless transitions and their application to intersystem crossing. Chemical Physics Letters. 21(2). 217–220. 4 indexed citations
15.
Orlandi, Giorgio & Willem Siebrand. (1972). Mechanisms of vibronic intensity borrowing. Chemical Physics Letters. 15(4). 465–468. 65 indexed citations
16.
Munn, R. W. & Willem Siebrand. (1970). Sign of the Hall Effect for Hopping Transport in Molecular Crystals. Physical review. B, Solid state. 2(8). 3435–3437. 13 indexed citations
17.
Siebrand, Willem. (1970). Recent developments in radiationless transitions. Journal of Luminescence. 1-2. 122–133. 4 indexed citations
18.
Munn, R. W. & Willem Siebrand. (1970). Theory of Charge Carrier Transport in Aromatic Hydrocarbon Crystals. The Journal of Chemical Physics. 52(12). 6391–6406. 77 indexed citations
19.
Munn, R. W. & Willem Siebrand. (1969). Phono-limited transport of charge carriers in molecular crystals. Chemical Physics Letters. 3(9). 655–657. 20 indexed citations
20.
Siebrand, Willem. (1967). Radiationless Transitions in Polyatomic Molecules. I. Calculation of Franck—Condon Factors. The Journal of Chemical Physics. 46(2). 440–447. 399 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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