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Ray Freeman

D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Chemistry 85 2618 137 303 34208

Ray Freeman publications per year

The chart shows the history of publications by Ray Freeman between 1956 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ray Freeman published across 70 years, from 1956 to 2025, averaging 4.5 papers a year. Output peaked at 15 publications in 1993. 1 of the 318 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1956 to 2025. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 1993. 1956: 1 publication 1957: 1 publication 1958: 0 publications 1959: 2 publications 1960: 3 publications 1961: 3 publications 1962: 6 publications 1963: 5 publications 1964: 2 publications 1965: 2 publications 1966: 3 publications 1967: 4 publications 1968: 1 publication 1969: 2 publications 1970: 4 publications 1971: 6 publications 1972: 4 publications 1973: 3 publications 1974: 3 publications 1975: 2 publications 1976: 4 publications 1977: 8 publications 1978: 10 publications 1979: 10 publications 1980: 10 publications 1981: 14 publications 1982: 9 publications 1983: 9 publications 1984: 11 publications 1985: 11 publications 1986: 5 publications 1987: 6 publications 1988: 10 publications 1989: 9 publications 1990: 9 publications 1991: 6 publications 1992: 8 publications 1993: 15 publications 1994: 12 publications 1995: 9 publications 1996: 12 publications 1997: 3 publications 1998: 6 publications 1999: 6 publications 2000: 1 publication 2001: 1 publication 2002: 1 publication 2003: 10 publications 2004: 4 publications 2005: 3 publications 2006: 3 publications 2007: 6 publications 2008: 6 publications 2009: 0 publications 2010: 4 publications 2011: 4 publications 2012: 2 publications 2013: 1 publication 2014: 0 publications 2015: 2 publications 2016: 0 publications 2017: 0 publications 2018: 0 publications 2019: 0 publications 2020: 0 publications 2021: 0 publications 2022: 0 publications 2023: 0 publications 2024: 0 publications 2025: 1 publication
1956 2025

318 publications in total across all disciplines

View publications per year as a table
Ray Freeman: publications per year, 1956 to 2025
Year Publications
1956 1
1957 1
1958 0
1959 2
1960 3
1961 3
1962 6
1963 5
1964 2
1965 2
1966 3
1967 4
1968 1
1969 2
1970 4
1971 6
1972 4
1973 3
1974 3
1975 2
1976 4
1977 8
1978 10
1979 10
1980 10
1981 14
1982 9
1983 9
1984 11
1985 11
1986 5
1987 6
1988 10
1989 9
1990 9
1991 6
1992 8
1993 15
1994 12
1995 9
1996 12
1997 3
1998 6
1999 6
2000 1
2001 1
2002 1
2003 10
2004 4
2005 3
2006 3
2007 6
2008 6
2009 0
2010 4
2011 4
2012 2
2013 1
2014 0
2015 2
2016 0
2017 0
2018 0
2019 0
2020 0
2021 0
2022 0
2023 0
2024 0
2025 1
Total 318
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Ray Freeman 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 Ray Freeman sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 301–320 publications, is where this scientist sits. 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
61–80 publications 1,295+

This scientist: 303 publications — 64th percentile

64% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764 303
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Ray Freeman 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 Ray Freeman sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 84–85 D-Index, is where this scientist sits. 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
40–41 D-Index 159+

This scientist: 85 D-Index — 85th percentile

85% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275 85
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Research.com Recognitions

  • 1999 - Longstaff Prize, Royal Society of Chemistry (UK)
  • 1979 - Fellow of the Royal Society, United Kingdom

Overview

Ray Freeman is affiliated with the University of Cambridge in the United Kingdom. Their research contributions include work published in the SSRN Electronic Journal.

Recent papers include:

  • Underdogs: Predicting Student Success at Abaarso School in Somaliland, 2025, SSRN Electronic Journal

Frequent co-authors of Ray Freeman include:

  • J. Debbie Linville

Freeman's work has appeared in the following publication venue:

  • SSRN Electronic Journal

Among the awards received by Ray Freeman are:

  • Longstaff Prize, Royal Society of Chemistry (UK), 1999
  • Fellow of the Royal Society, United Kingdom, 1979

Best Publications

  • ENHANCEMENT OF NUCLEAR MAGNETIC RESONANCE SIGNALS BY POLARIZATION TRANSFER

    Gareth A. Morris;Ray Freeman

  • Investigation of complex networks of spin-spin coupling by two-dimensional NMR

    Ad Bax;Ray Freeman

  • Computer-optimized decoupling scheme for wideband applications and low-level operation

    A.J Shaka;P.B Barker;Ray Freeman

  • Selective excitation in Fourier transform nuclear magnetic resonance

    Gareth A Morris;Ray Freeman

  • Band-selective radiofrequency pulses

    Helen Geen;Ray Freeman

  • Evaluation of a new broadband decoupling sequence: WALTZ-16

    A.J Shaka;James Keeler;Ray Freeman

  • Natural abundance carbon-13-carbon-13 coupling observed via double-quantum coherence

    Ad Bax;Ray Freeman;Stewart P. Kempsell

  • Correlation of proton chemical shifts by two-dimensional Fourier transform NMR

    Ad Bax;Ray Freeman;Gareth Morris

  • An NMR technique for tracing out the carbon skeleton of an organic molecule

    Ad Bax;Ray Freeman;Thomas A. Frenkiel

  • Fourier Transform Study of NMR Spin-Lattice Relaxation by "Progressive Saturation"

    Ray Freeman;H. D. W. Hill

  • NMR population inversion using a composite pulse

    Malcolm H. Levitt;Ray Freeman

  • Suppression of artifacts in two-dimensional J spectroscopy

    Geoffrey Bodenhausen;Ray Freeman;David L Turner

  • Broadband heteronuclear decoupling

    Malcolm H Levitt;Ray Freeman;Thomas Frenkiel

  • Proton-decoupled NMR. Spectra of carbon-13 With the nuclear overhauser effect suppressed

    R Freeman;H.D.W Hill;R Kaptein

  • Assignment of carbon-13 NMR spectra via double-quantum coherence

    Ad Bax;Ray Freeman;T.A Frenkiel;M.H Levitt

  • Correlation of proton and carbon-13 nmr spectra by heteronuclear two-dimensional spectroscopy

    Geoffrey Bodenhausen;Ray Freeman

  • Simplification of NMR spectra by filtration through multiple-quantum coherence

    A.J Shaka;Ray Freeman

  • Phase and intensity anomalies in fourier transform NMR

    Ray Freeman;H.D.W Hill

  • Radiofrequency pulse sequences which compensate their own imperfections

    Ray Freeman;Stewart P Kempsell;Malcolm H Levitt

  • Compensation for Pulse Imperfections in NMR Spin-Echo Experiments

    Malcolm H Levitt;Ray Freeman

  • A simple pulse sequence for selective excitation in Fourier transform NMR

    Geoffrey Bodenhausen;Ray Freeman;Gareth A Morris

Frequent Co-Authors

Gareth A. Morris
Gareth A. Morris University of Manchester
Malcolm H. Levitt
Malcolm H. Levitt University of Southampton
Geoffrey Bodenhausen
Geoffrey Bodenhausen École Normale Supérieure
David L. Turner
David L. Turner Universidade Nova de Lisboa
Ad Bax
Ad Bax National Institutes of Health
Christopher J. Schofield
Christopher J. Schofield University of Oxford
Jack E. Baldwin
Jack E. Baldwin University of Oxford
Robert Kaptein
Robert Kaptein Utrecht University
Stephen Wimperis
Stephen Wimperis Lancaster University
Iain D. Campbell
Iain D. Campbell University of Oxford

External Links

Wikipedia of Ray Freeman Personal website of Ray Freeman Google Scholar page

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Best Scientists Citing Ray Freeman

Bernd Wrackmeyer

Bernd Wrackmeyer

University of Bayreuth

Publications: 181

Geoffrey Bodenhausen

Geoffrey Bodenhausen

École Normale Supérieure

Publications: 172

Ad Bax

Ad Bax

National Institutes of Health

Publications: 108

Richard R. Ernst

Richard R. Ernst

ETH Zurich

Publications: 98

Lewis E. Kay

Lewis E. Kay

University of Toronto

Publications: 95

Kurt Wüthrich

Kurt Wüthrich

ETH Zurich

Publications: 82

Steffen J. Glaser

Steffen J. Glaser

Technical University of Munich

Publications: 80

Gerhard Wagner

Gerhard Wagner

Harvard University

Publications: 75

Gareth A. Morris

Gareth A. Morris

University of Manchester

Publications: 71

Horst Kessler

Horst Kessler

Technical University of Munich

Publications: 64

Wolfgang Bermel

Wolfgang Bermel

University of Florence

Publications: 64

Lucio Frydman

Lucio Frydman

Weizmann Institute of Science

Publications: 64

Ole W. Sørensen

Ole W. Sørensen

Independent Scientist / Consultant, Denmark

Publications: 63

Malcolm H. Levitt

Malcolm H. Levitt

University of Southampton

Publications: 63

Burkhard Luy

Burkhard Luy

Karlsruhe Institute of Technology

Publications: 62

Robert G. Griffin

Robert G. Griffin

MIT

Publications: 56

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