World's Best Scientists 2026 revealed!
Robert J. Le Roy

Robert J. Le Roy

D-Index & Metrics

Chemistry

D-Index
56
Citations
16224
World Ranking
11450
National Ranking
313

Robert J. Le Roy publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Robert J. Le Roy sits on this spectrum.

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 235 publications — 45th percentile

45% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

Robert J. Le Roy D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Robert J. Le Roy sits on this spectrum.

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 56 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Research.com Recognitions

  • 1979 - Fellow of John Simon Guggenheim Memorial Foundation
  • 1974 - Fellow of Alfred P. Sloan Foundation

Overview

Robert J. Le Roy was affiliated with the University of Waterloo in Canada. Their research focus spanned the fields of veterinary science and medicine, with specific attention to small animals and public health, environmental, and occupational health as subfields.

The scientist contributed to topics including animal testing and alternatives as well as health and medical research impacts. Their publication record featured work published in the International Journal of Toxicology.

  • Recent papers: "I Wish I Had Known That! Impactful Guidance and Perspectives for a Fulfilling Career in Toxicology," 2025, International Journal of Toxicology

Coauthors who frequently collaborated with Robert J. Le Roy included Jessica Graham, Joel P. Bercu, Marie Fortin, Andy Kiorpes, and Sunjay Sethi.

  • Jessica Graham
  • Joel P. Bercu
  • Marie Fortin
  • Andy Kiorpes
  • Sunjay Sethi

  • International Journal of Toxicology

During their career, Robert J. Le Roy received recognition through fellowships awarded by prominent foundations. These include the Fellow of the Alfred P. Sloan Foundation in 1974 and the Fellow of the John Simon Guggenheim Memorial Foundation in 1979.

Best Publications

  • The HITRAN 2008 molecular spectroscopic database

    L.S. Rothman;I.E. Gordon;Y. Babikov;A. Barbe

  • An accurate analytic potential function for ground-state N2 from a direct-potential-fit analysis of spectroscopic data.

    Robert J. Le Roy;Yiye Huang;Calvin Jary

  • Spectroscopy and Potential Energy Surfaces of Vander Waals Molecules

    Robert J. Le Roy;J. Scott Carley

  • Improved potential energy surfaces for the interaction of H2 with Ar, Kr, and Xe

    Robert J. Le Roy;Jeremy M. Hutson

  • Anisotropic intermolecular potentials from an analysis of spectra of H2‐ and D2‐inert gas complexes

    Robert J. Le Roy;J. Van Kranendonk

  • Nonadiabatic eigenvalues and adiabatic matrix elements for all isotopes of diatomic hydrogen

    Carey Schwartz;Robert J. Le Roy

  • Shape Resonances and Rotationally Predissociating Levels: The Atomic Collision Time‐Delay Functions and Quasibound Level Properties of H2(X 1Σg+)

    Robert J. Le Roy;Richard B. Bernstein

  • Direct potential fit analysis of the X 1Σg+ state of Rb2: Nothing else will do!

    Jenning Y. Seto;Robert J. Le Roy;Jean Vergès;Claude Amiot

  • dPotFit: A computer program to fit diatomic molecule spectral data to potential energy functions

    Robert J. Le Roy

  • Infrared spectrum and potential energy surface of He–CO

    Claudio E. Chuaqui;Robert J. Le Roy;A. R. W. McKellar

  • Improved Parameterization for Combined Isotopomer Analysis of Diatomic Spectra and Its Application to HF and DF.

    Robert J. Le Roy

  • Energies and widths of quasibound levels (orbiting resonances) for spherical potentials

    Robert J. Le Roy;Wing‐Ki Liu

  • Diatom potential curves and transition moment functions from continuum absorption coefficients: Br2

    Robert J. Le Roy;R. Glen Macdonald;George Burns

  • A new potential function form incorporating extended long-range behaviour: application to ground-state Ca2

    Robert J. Le Roy;Robert D. E. Henderson

  • Accurate analytic potentials for Li2(X Σ1g+) and Li2(A Σ1u+) from 2 to 90 Å, and the radiative lifetime of Li(2p)

    Robert J. Le Roy;Nikesh S. Dattani;John A. Coxon;Amanda J. Ross

  • Monte Carlo simulations of structural properties and infrared spectra of SF6–(Ar)n clusters

    Dieter Eichenauer;Robert J. Le Roy

  • Near-dissociation expansions in the spectroscopic determination of diatom dissociation energies: method, and application to BeAr+

    Robert J. Le Roy;Wai-Ha Lam

  • Tunneling model for hydrogen abstraction reactions in low-temperature solids. Application to reactions in alcohol glasses and acetonitrile crystals

    Robert J. Le Roy;Hisao Murai;Ffrancon Williams

  • Dissociation energies and long-range potentials of diatomic molecules from vibrational spacings: The halogens

    Robert J Le Roy;Richard B Bernstein

  • Bound → continuum intensities — A computer program for calculating absorption coefficients, emission intensities or (golden rule) predissociation rates

    Robert J. Le Roy

  • Vibration-rotation emission spectra and combined isotopomer analyses for the coinage metal hydrides: CuH & CuD, AgH & AgD, and AuH & AuD

    Jenning Y. Seto;Zulfikar Morbi;Frank Charron;Sang K. Lee

  • A “modified Lennard-Jones oscillator” model for diatom potential functions

    Photos G. Hajigeorgiou;Robert J. Le Roy

  • Long-range damping functions improve the short-range behaviour of ‘MLR’ potential energy functions

    Robert J. Le Roy;Carl C. Haugen;Jason Tao;Hui Li

  • Ground State Potential Energy Curve and Dissociation Energy of MgH

    Alireza Shayesteh;Robert D. E. Henderson;Robert J. Le Roy;Peter F. Bernath

Frequent Co-Authors

Peter F. Bernath
Peter F. Bernath Old Dominion University
A. R. W. McKellar
A. R. W. McKellar National Academies of Sciences, Engineering, and Medicine
Jeremy M. Hutson
Jeremy M. Hutson Durham University
William J. Meath
William J. Meath University of Western Ontario
Benoit Simard
Benoit Simard National Research Council Canada
Erin R. Johnson
Erin R. Johnson Dalhousie University
Richard B. Bernstein
Richard B. Bernstein University of Wisconsin–Madison
Richard N. Zare
Richard N. Zare Stanford University
Marcel Nooijen
Marcel Nooijen University of Waterloo
Jonathan Tennyson
Jonathan Tennyson University College London

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