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.
This map shows the geographic impact of R. S. Lewis'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 R. S. Lewis with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R. S. Lewis more than expected).
This network shows the impact of papers produced by R. S. Lewis. 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 R. S. Lewis. The network helps show where R. S. Lewis may publish in the future.
Co-authorship network of co-authors of R. S. Lewis
This figure shows the co-authorship network connecting the top 25 collaborators of R. S. Lewis.
A scholar is included among the top collaborators of R. S. Lewis 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 R. S. Lewis. R. S. Lewis 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.
Gyngard, F., S. Amari, E. Zinner, R. Gallino, & R. S. Lewis. (2007). Lithium, Boron, and Sulphur Isotopic Ratios in Large Presolar SiC Grains from Murchison. LPI. 1963.1 indexed citations
2.
Pellin, M. J., M. R. Savina, W. F. Calaway, et al.. (2006). Heavy Metal Isotopic Anomalies in Supernovae Presolar Grains. 37th Annual Lunar and Planetary Science Conference. 2041.4 indexed citations
3.
Gyngard, F., S. Amari, M. Jadhav, et al.. (2006). Titanium Isotopic Ratios in KJG Presolar SiC Grains from Murchison. Meteoritics and Planetary Science Supplement. 41. 5334.3 indexed citations
4.
Gallino, R., M. Pignatari, S. Amari, et al.. (2003). Isotopic composition of Kr in presolar mainstream SiC grains. Geochimica et Cosmochimica Acta. 67(18). 91.2 indexed citations
5.
Zinner, E., et al.. (2001). Isotopic Analysis of Small Presolar SiC Grains with the NanoSIMS Ion Microprobe. M&PSA. 36.2 indexed citations
6.
Davis, A. M., Maria Lugaro, R. Gallino, et al.. (2001). Isotopic compositions of heavy elements in presolar grains: new constraints on nucleosynthesis. MmSAI. 72. 413–421.2 indexed citations
7.
Daulton, T. L., R. S. Lewis, & S. Amari. (1998). Polytype Variations in Presolar Silicon Carbide Grains: Microstructural Characterization by Transmission Electron Microscopy. Meteoritics and Planetary Science Supplement. 33.2 indexed citations
Kehm, K., S. Amari, C. M. Hohenberg, & R. S. Lewis. (1996). 22Ne-E(L) Measured in Individual KFC1 Graphite Grains from the Murchison Meteorite. LPI. 27. 657.2 indexed citations
10.
Höppe, P., et al.. (1996). Origin of Circumstellar SiC Grains With Low 12C/13C Ratios: A Multiple Star Scenario. LPI. 27. 561.4 indexed citations
11.
Amari, S., L. R. Nittler, E. Zinner, & R. S. Lewis. (1996). High-Mass-Resolution Ion Imaging of 12C/13C Ratios: Identification of Rare Types of Presolar SiC from Murchison. Meteoritics and Planetary Science Supplement. 31.1 indexed citations
12.
Höppe, P., et al.. (1995). Interstellar SiC of Type X: How Many Distinct Stellar Sources?. LPI. 26. 621.3 indexed citations
13.
Amari, S., E. Zinner, & R. S. Lewis. (1995). 41Ca in Circumstellar Graphite from Supernovae. Meteoritics and Planetary Science. 30(5). 480.6 indexed citations
14.
Nittler, L. R., S. Amari, R. M. Walker, E. Zinner, & R. S. Lewis. (1993). Identification of Exotic SiC Grains from the Murchison Meteorite by Ion Imaging. Meteoritics and Planetary Science. 28(3). 413.8 indexed citations
15.
Höppe, P., R. Strebel, P. Eberhardt, S. Amari, & R. S. Lewis. (1993). Interstellar SiC: Extended Studies of C, N, and SI Isotopes in Small Single Grains. Metic. 28(3). 363.2 indexed citations
16.
Zinner, E., S. Amari, & R. S. Lewis. (1991). S-Process BA and Nd in Presolar Murchison SiC. Lunar and Planetary Science Conference. 22. 1553.2 indexed citations
17.
Virag, A., et al.. (1989). Isotopic Compositions of H, C, and N in C Diamonds from the Allende and Murray Carbonaceous Chondrites. Lunar and Planetary Science Conference. 20. 1158.12 indexed citations
18.
Wright, I. P., et al.. (1987). An Investigation of Carbon and Nitrogen Isotopes in Cδ and the Effects of Grain Size Upon Combustion Temperature. Metic. 22. 319.5 indexed citations
19.
Lewis, R. S., L. Alaerts, & E. Anders. (1979). Ferrichromite: a Major Host Phase of Isotopically Anomalous Noble Gases in Primitive Meteorites. Lunar and Planetary Science Conference. 725–727.8 indexed citations
20.
Lewis, R. S., H. Takahashi, L. Alaerts, & E. Anders. (1977). Primordial Noble Gases in Five LL Chondrites: Host Phases, Abundance Patterns, Origin. Lunar and Planetary Science Conference. 8. 578.2 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.