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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 59 10144 9171 2821 2320 365 12292

Cheuk-Yiu Ng publications per year

The chart shows the history of publications by Cheuk-Yiu Ng between 1973 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Cheuk-Yiu Ng published across 49 years, from 1973 to 2021, averaging 7.7 papers a year. Output peaked at 23 publications in 1999. 8 of the 378 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1973 to 2021. Vertical axis: number of publications, 0 to 23. Peak 23 publications in 1999. 1973: 1 publication 1974: 1 publication 1975: 0 publications 1976: 3 publications 1977: 4 publications 1978: 0 publications 1979: 3 publications 1980: 3 publications 1981: 12 publications 1982: 5 publications 1983: 5 publications 1984: 6 publications 1985: 6 publications 1986: 8 publications 1987: 1 publication 1988: 3 publications 1989: 6 publications 1990: 13 publications 1991: 13 publications 1992: 6 publications 1993: 8 publications 1994: 8 publications 1995: 9 publications 1996: 7 publications 1997: 21 publications 1998: 16 publications 1999: 23 publications 2000: 18 publications 2001: 7 publications 2002: 9 publications 2003: 13 publications 2004: 10 publications 2005: 11 publications 2006: 12 publications 2007: 10 publications 2008: 15 publications 2009: 5 publications 2010: 1 publication 2011: 7 publications 2012: 9 publications 2013: 9 publications 2014: 9 publications 2015: 5 publications 2016: 7 publications 2017: 7 publications 2018: 7 publications 2019: 8 publications 2020: 4 publications 2021: 4 publications
1973 2021

378 publications in total across all disciplines

View publications per year as a table
Cheuk-Yiu Ng: publications per year, 1973 to 2021
Year Publications
1973 1
1974 1
1975 0
1976 3
1977 4
1978 0
1979 3
1980 3
1981 12
1982 5
1983 5
1984 6
1985 6
1986 8
1987 1
1988 3
1989 6
1990 13
1991 13
1992 6
1993 8
1994 8
1995 9
1996 7
1997 21
1998 16
1999 23
2000 18
2001 7
2002 9
2003 13
2004 10
2005 11
2006 12
2007 10
2008 15
2009 5
2010 1
2011 7
2012 9
2013 9
2014 9
2015 5
2016 7
2017 7
2018 7
2019 8
2020 4
2021 4
Total 378
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Cheuk-Yiu Ng 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 Cheuk-Yiu Ng 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, 361–380 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: 365 publications — 75th percentile

75% 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
321–340 643
341–360 628
361–380 522 365
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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Cheuk-Yiu Ng 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 Cheuk-Yiu Ng 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, 58–59 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: 59 D-Index — 44th percentile

44% 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 59
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
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

  • 2005 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1993 - Fellow of American Physical Society (APS) Citation For the application of phtotoionization and photoelectron photoion coincidence to the study of ionic dissociation, state to state ion molecule reactions, and the study of transient species
  • 1981 - Fellow of Alfred P. Sloan Foundation

Overview

What is he best known for?

The fields of study he is best known for:

  • Ion
  • Hydrogen
  • Organic chemistry

His primary areas of investigation include Atomic physics, Photoionization, Ion, Ionization and Ionization energy. Within one scientific family, he focuses on topics pertaining to Field desorption under Atomic physics, and may sometimes address concerns connected to X-ray photoelectron spectroscopy. His studies deal with areas such as Physical chemistry, Molecular physics, Synchrotron radiation, Analytical chemistry and van der Waals force as well as Photoionization.

His study in Ion is interdisciplinary in nature, drawing from both Photochemistry, Molecule and Potential energy. His Ionization research incorporates themes from Dissociation and Molecular beam. Cheuk-Yiu Ng has researched Ionization energy in several fields, including Electron spectroscopy, Ab initio and Bond-dissociation energy.

His most cited work include:

  • State-Selected and State-to-State Ion−Molecule Reaction Dynamics (365 citations)
  • Vacuum ultraviolet photoionization and photodissociation of molecules and clusters (187 citations)
  • Performance of the vacuum ultraviolet high-resolution and high-flux beamline for chemical dynamics studies at the Advanced Light Source (150 citations)

What are the main themes of his work throughout his whole career to date?

His primary areas of study are Atomic physics, Photoionization, Ion, Ionization energy and Field desorption. His Atomic physics study integrates concerns from other disciplines, such as Ionization, Rydberg formula, Laser and X-ray photoelectron spectroscopy. In his study, Photodissociation is inextricably linked to Analytical chemistry, which falls within the broad field of Photoionization.

His Ion research is multidisciplinary, incorporating perspectives in Molecule, Dissociation and Mass spectrometry. Cheuk-Yiu Ng interconnects Standard enthalpy of formation, Ground state, Ab initio and Bond-dissociation energy in the investigation of issues within Ionization energy. His work in Field desorption tackles topics such as Synchrotron radiation which are related to areas like Undulator and Extreme ultraviolet.

He most often published in these fields:

  • Atomic physics (61.13%)
  • Photoionization (47.70%)
  • Ion (34.98%)

What were the highlights of his more recent work (between 2009-2021)?

  • Atomic physics (61.13%)
  • Photodissociation (21.55%)
  • Ion (34.98%)

In recent papers he was focusing on the following fields of study:

His scientific interests lie mostly in Atomic physics, Photodissociation, Ion, Excited state and Analytical chemistry. His Atomic physics study combines topics from a wide range of disciplines, such as Photoionization, Ab initio, Molecule, Ionization energy and Laser. Cheuk-Yiu Ng has included themes like Atom and Ground state in his Photoionization study.

His Ionization energy research includes elements of Rydberg formula and Molecular vibration. His Ion research integrates issues from Dissociation and Kinetic isotope effect. His work deals with themes such as Ionization, Quantum number and Branching fraction, which intersect with Excited state.

Between 2009 and 2021, his most popular works were:

  • Evidence for direct molecular oxygen production in CO2 photodissociation (62 citations)
  • Communication: The origin of rotational enhancement effect for the reaction of H2O+ + H2 (D2) (32 citations)
  • The translational, rotational, and vibrational energy effects on the chemical reactivity of water cation H2O+(X 2B1) in the collision with deuterium molecule D2. (27 citations)

Best Publications

  • State-Selected and State-to-State Ion−Molecule Reaction Dynamics

    Cheuk-Yiu Ng

  • On the Enthalpy of Formation of Hydroxyl Radical and Gas-Phase Bond Dissociation Energies of Water and Hydroxyl

    Branko Ruscic;Albert F. Wagner;Lawrence B. Harding;Robert L. Asher

  • Vacuum ultraviolet photoionization and photodissociation of molecules and clusters

    Cheuk-Yiu Ng

  • Performance of the vacuum ultraviolet high-resolution and high-flux beamline for chemical dynamics studies at the Advanced Light Source

    P. A. Heimann;M. Koike;C. W. Hsu;D. Blank

  • H 2 + (X,v + =0~15,N + =1)+Heプロトン移動反応のパルス電界イオン化光電子二次イオンコインシデンス研究

    X N Tang;H Xu;T Zhang;Y Hou

  • VACUUM ULTRAVIOLET SPECTROSCOPY AND CHEMISTRY BY PHOTOIONIZATION AND PHOTOELECTRON METHODS

    Cheuk-Yiu Ng

  • Photoionization of dimeric polyatomic molecules: Proton affinities of H2O and HF

    C. Y. Ng;D. J. Trevor;P. W. Tiedemann;S. T. Ceyer

  • Development of a supersonic O(3PJ), O(1D2) atomic oxygen nozzle beam source

    Steven J. Sibener;Richard J. Buss;Cheuk Yiu Ng;Yuan T. Lee

  • Improved potentials for Ne + Ar, Ne + Kr, and Ne + Xe

    C. Y. Ng;Y. T. Lee;J. A. Barker

  • Unimolecular and bimolecular ion-molecule reaction dynamics

    C. Y. Ng;Tomas Baer;Ivan Powis

  • High resolution laser photoionization and photoelectron studies

    Ivan Powis;Tomas Baer;C. Y. Ng

  • Photoionization studies of the Kr2 and Ar2 van der Waals molecules

    C. Y. Ng;D. J. Trevor;B. H. Mahan;Y. T. Lee

  • MOLECULAR BEAM PHOTOIONIZATION STUDY OF CARBON DISULFIDE, CARBON DISULFIDE DIMER AND CLUSTERS

    Y. Ono;S. H. Linn;H. F. Prest;M. E. Gress

  • Combining Theory with Experiment: Assessment of the Thermochemistry of SFn, SFn+, and SFn-, n = 1-6

    Y. S. Cheung;Yu-Ju Chen;C. Y. Ng;See-Wing Chiu

  • High-resolution pulsed field ionization photoelectron–photoion coincidence study of CH4: Accurate 0 K dissociation threshold for CH3+

    Karl-Michael Weitzel;Marcus Malow;G. K. Jarvis;Tomas Baer

  • A high resolution photoionization study of Ne and Ar: Observation of mass analyzed threshold ions using synchrotron radiation and direct current electric fields

    C. W. Hsu;K. T. Lu;M. Evans;Yu-Ju Chen

  • Photoionization studies of the diatomic heteronuclear rare gas molecules XeKr, XeAr, and KrAr

    C. Y. Ng;P. W. Tiedemann;B. H. Mahan;Y. T. Lee

  • The structure, energetics and dynamics of organic ions

    Tomas Baer;C. Y. Ng;Ivan Powis

  • A time-dependent wave-packet quantum scattering study of the reaction H2+(v = 0-2,4,6;j = 1) + He--> HeH+ + H.

    Tian-Shu Chu;Rui-Feng Lu;Ke-Li Han;X.-N. Tang

  • Photoion-photoelectron coincidence spectroscopy of the transient molecules SO and S2O

    K. Norwood;C.Y. Ng

  • A 193 nm laser photofragmentation time‐of‐flight mass spectrometric study of CS2 and CS2 clusters

    W.‐B. Tzeng;H.‐M. Yin;W.‐Y. Leung;J.‐Y. Luo

Frequent Co-Authors

Tomas Baer
Tomas Baer University of North Carolina at Chapel Hill
Yu-Ju Chen
Yu-Ju Chen Academia Sinica
Qing-Zhu Yin
Qing-Zhu Yin University of California, Davis
Yuan T. Lee
Yuan T. Lee Academia Sinica
Yuan-Pern Lee
Yuan-Pern Lee Academia Sinica
Arthur G. Suits
Arthur G. Suits University of Missouri
Roger C. Wiens
Roger C. Wiens Los Alamos National Laboratory
Musahid Ahmed
Musahid Ahmed Lawrence Berkeley National Laboratory
Fei Qi
Fei Qi Shanghai Jiao Tong University
Pavel Rosmus
Pavel Rosmus Gustave Eiffel University

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