John J. Freeman

4.6k total citations
123 papers, 3.7k citations indexed

About

John J. Freeman is a scholar working on Astronomy and Astrophysics, Organic Chemistry and Spectroscopy. According to data from OpenAlex, John J. Freeman has authored 123 papers receiving a total of 3.7k indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Astronomy and Astrophysics, 14 papers in Organic Chemistry and 14 papers in Spectroscopy. Recurrent topics in John J. Freeman's work include Planetary Science and Exploration (29 papers), Astro and Planetary Science (13 papers) and Neuroscience and Neuropharmacology Research (9 papers). John J. Freeman is often cited by papers focused on Planetary Science and Exploration (29 papers), Astro and Planetary Science (13 papers) and Neuroscience and Neuropharmacology Research (9 papers). John J. Freeman collaborates with scholars based in United States, United Kingdom and Brunei. John J. Freeman's co-authors include Jill Dill Pasteris, Alian Wang, B. Wopenka, Donald J. Jenden, Bradley L. Jolliff, Rachel Choi, Matthew J. Silva, B. L. Jolliff, K. S. W. Sing and F. G. R. Gimblett and has published in prestigious journals such as Nature, Science and Journal of Biological Chemistry.

In The Last Decade

John J. Freeman

117 papers receiving 3.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John J. Freeman United States 32 685 498 445 397 331 123 3.7k
Antonio Lanzirotti United States 46 447 0.7× 503 1.0× 766 1.7× 585 1.5× 1.8k 5.5× 213 7.7k
Satοru Nakashima Japan 45 497 0.7× 581 1.2× 1.5k 3.5× 308 0.8× 1.4k 4.2× 270 6.8k
Matt R. Kilburn Australia 43 354 0.5× 494 1.0× 470 1.1× 655 1.6× 1.4k 4.2× 113 5.5k
A. L. D. Kilcoyne United States 54 1.6k 2.4× 752 1.5× 1.9k 4.3× 132 0.3× 516 1.6× 265 9.6k
Nita Sahai United States 38 417 0.6× 1.3k 2.5× 1.3k 2.9× 636 1.6× 203 0.6× 109 5.4k
Yoshitaka Yamamoto Japan 32 320 0.5× 307 0.6× 221 0.5× 162 0.4× 251 0.8× 176 3.4k
Yuki Kimura Japan 25 701 1.0× 247 0.5× 885 2.0× 187 0.5× 202 0.6× 230 2.8k
A. Steele United States 45 2.9k 4.3× 355 0.7× 408 0.9× 481 1.2× 1.4k 4.3× 290 7.2k
Wilhelm van Bronswijk Australia 29 79 0.1× 716 1.4× 493 1.1× 343 0.9× 700 2.1× 89 3.6k
Bartholomew Nagy United States 30 1.1k 1.6× 139 0.3× 80 0.2× 194 0.5× 312 0.9× 105 2.6k

Countries citing papers authored by John J. Freeman

Since Specialization
Citations

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

Fields of papers citing papers by John J. Freeman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of John J. Freeman

This figure shows the co-authorship network connecting the top 25 collaborators of John J. Freeman. A scholar is included among the top collaborators of John J. Freeman 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 John J. Freeman. John J. Freeman 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.
Wang, Alian, John J. Freeman, P. Sobrón, & Jean‐François Lambert. (2010). A Miniaturized Near Infrared Instrument for Detecting H2O/OH, Sulfates, Carbonates and Organic Species During Planetary Surface Explorations. LPI. 2018. 1 indexed citations
2.
Wang, Alian, et al.. (2010). Stability Fields and Phase Transition Pathways of Ferric Sulfates in 50°C to 5°C Temperature Range. Lunar and Planetary Science Conference. 2303. 5 indexed citations
3.
4.
Sobrón, P., et al.. (2009). Field Test of the Water-Wheel IR (WIR) Spectrometer on Evaporative Salt Deposits at Tibetan Plateau. Lunar and Planetary Science Conference. 2372. 2 indexed citations
5.
Wang, Alian & John J. Freeman. (2009). Pathways and Rates of Mg-Sulfate Dehydration and Rehydration on Mars. Lunar and Planetary Science Conference. 1473. 2029–90. 5 indexed citations
6.
Freeman, John J., et al.. (2009). Ferric Sulfates on Mars: Mission Observations and Laboratory Investigations. LPI. 2284. 4 indexed citations
7.
Freeman, John J., et al.. (2008). D 2 O Substitution Experiment on Hydrated Iron and Magnesium Sulfates and Its Application for Spectral Interpretation of Martian Sulfates. Lunar and Planetary Science Conference. 2390. 6 indexed citations
8.
Freeman, John J., Alian Wang, & James L. Lambert. (2008). AN ACTIVE SOURCE, NIR, REFLECTANCE SPECTROMETER IN A ROVER WHEEL, WATER- WHEEL IR (WIR), FOR SOIL CHARACTERIZATION IN FUTURE MARS SURFACE EXPLORATION.. Lunar and Planetary Science Conference. 2190.
9.
Wang, Alian, John J. Freeman, & B. L. Jolliff. (2007). Formation Rate of Amorphous Magnesium Sulfates at Low Temperatures Approaching the Current Surface Conditions on Mars. Lunar and Planetary Science Conference. 1195. 4 indexed citations
10.
Freeman, John J., et al.. (2007). Pathways to Form Kieserite from Epsomite at Mid to Low Temperatures, with Relevance to Mars. LPI. 1298. 17 indexed citations
11.
Kuebler, K. E., et al.. (2006). Database of Raman Mineral Spectra for Planetary Surface Exploration. LPI. 1907. 4 indexed citations
12.
White, S. N., Rachel M. Dunk, Peter G. Brewer, et al.. (2004). In Situ Raman Spectra from the SeaCliff Hydrothermal Field (Gorda Ridge). AGU Fall Meeting Abstracts. 2004. 1 indexed citations
13.
Wang, Alian, et al.. (2004). The Water-Wheel IR (WIR) — A Contact Survey Experiment for Water and Carbonates on Mars. Lunar and Planetary Science Conference. 1510.
14.
Pasteris, Jill Dill, B. Wopenka, John J. Freeman, et al.. (2004). Raman Spectroscopy in the Deep Ocean: Successes and Challenges. Applied Spectroscopy. 58(7). 195A–208A. 63 indexed citations
15.
Freeman, John J., Alian Wang, K. E. Kuebler, & L. A. Haskin. (2003). Raman Spectroscopic Characterization of the Feldspars: Implications for Surface Mineral Characterization in Planetary Exploration. Lunar and Planetary Science Conference. 1676. 14 indexed citations
16.
Freeman, John J., B. Wopenka, Matthew J. Silva, & Jill Dill Pasteris. (2001). Raman Spectroscopic Detection of Changes in Bioapatite in Mouse Femora as a Function of Age and In Vitro Fluoride Treatment. Calcified Tissue International. 68(3). 156–162. 139 indexed citations
17.
Jolliff, B. L., John J. Freeman, & B. Wopenka. (1996). Structural Comparison of Lunar, Terrestrial, and Synthetic Whitlockite Using Laser Raman Microprobe Spectroscopy. LPI. 27. 613. 16 indexed citations
18.
Swan, P. D., R. M. Walker, B. Wopenka, & John J. Freeman. (1987). 3.4 μm Absorption in Interplanetary Dust Particles: Evidence for Indigenous Hydrocarbons and a Further Link to Comet Halley. Meteoritics and Planetary Science. 22. 510. 11 indexed citations
19.
Freeman, John J., et al.. (1983). Reactions Induced by the Concurrent Use of Thimerosal and Tetracycline. Optometry and Vision Science. 60(9). 759–761. 2 indexed citations
20.
Freeman, John J., et al.. (1979). Studies on the behavioral and biochemical effects of hemicholinium in vivo.. Journal of Pharmacology and Experimental Therapeutics. 210(1). 91–97. 52 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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