K. Butler

3.5k total citations · 1 hit paper
96 papers, 2.4k citations indexed

About

K. Butler is a scholar working on Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics and Instrumentation. According to data from OpenAlex, K. Butler has authored 96 papers receiving a total of 2.4k indexed citations (citations by other indexed papers that have themselves been cited), including 57 papers in Astronomy and Astrophysics, 24 papers in Atomic and Molecular Physics, and Optics and 23 papers in Instrumentation. Recurrent topics in K. Butler's work include Stellar, planetary, and galactic studies (50 papers), Astrophysics and Star Formation Studies (33 papers) and Astro and Planetary Science (27 papers). K. Butler is often cited by papers focused on Stellar, planetary, and galactic studies (50 papers), Astrophysics and Star Formation Studies (33 papers) and Astro and Planetary Science (27 papers). K. Butler collaborates with scholars based in Germany, United States and United Kingdom. K. Butler's co-authors include N. Przybilla, C. J. Zeippen, M. J. Seaton, C. Mendoza, K A Berrington, P. J. Storey, María-Fernanda Nieva, Yu Yan, P G Burke and K T Taylor and has published in prestigious journals such as Science, The Astrophysical Journal and Journal of The Electrochemical Society.

In The Last Decade

K. Butler

91 papers receiving 2.3k citations

Hit Papers

Atomic data for opacity calculations. II. Computational m... 1987 2026 2000 2013 1987 100 200 300 400
What are hit papers?

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.

  1. Atomic data for opacity calculations. II. Computational methods
    1987 444 citations K. Butler et al. profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
K. Butler Germany 24 1.6k 797 511 313 213 96 2.4k
Sveneric Johansson Sweden 22 1.2k 0.7× 754 0.9× 265 0.5× 426 1.4× 78 0.4× 109 2.0k
M. A. Bautista United States 30 2.0k 1.2× 1.1k 1.4× 263 0.5× 482 1.5× 429 2.0× 117 2.9k
E. A. Den Hartog United States 27 1.2k 0.7× 677 0.8× 366 0.7× 494 1.6× 96 0.5× 66 2.2k
S. S. Tayal United States 21 805 0.5× 1.4k 1.7× 97 0.2× 553 1.8× 385 1.8× 150 2.0k
A. J. J. Raassen Netherlands 29 1.4k 0.8× 1.1k 1.4× 76 0.1× 437 1.4× 241 1.1× 120 2.4k
Ulf Litzén Sweden 26 465 0.3× 1.5k 1.8× 97 0.2× 702 2.2× 172 0.8× 93 2.0k
L. I. Podobedova Russia 10 333 0.2× 569 0.7× 104 0.2× 316 1.0× 74 0.3× 28 1.1k
N. R. Badnell United Kingdom 18 567 0.3× 904 1.1× 55 0.1× 389 1.2× 281 1.3× 59 1.3k
F. Leblanc Canada 22 780 0.5× 509 0.6× 168 0.3× 51 0.2× 58 0.3× 67 1.5k
H. van Regemorter France 14 465 0.3× 843 1.1× 53 0.1× 583 1.9× 115 0.5× 33 1.3k

Countries citing papers authored by K. Butler

Since Specialization
Citations

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

Fields of papers citing papers by K. Butler

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by K. Butler. 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 K. Butler. The network helps show where K. Butler may publish in the future.

Co-authorship network of co-authors of K. Butler

This figure shows the co-authorship network connecting the top 25 collaborators of K. Butler. A scholar is included among the top collaborators of K. Butler 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 K. Butler. K. Butler 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.
Shen, Jie, Kun Ma, James Green, et al.. (2025). Learning radical excited states from sparse data. Chemical Science. 16(37). 17356–17368. 3 indexed citations
2.
Butler, K., J. B. O. Caughman, C. A. Johnson, et al.. (2024). Filterscope Techniques for Parasitic Signal Screening. IEEE Transactions on Plasma Science. 52(6). 2343–2348.
3.
Caughman, J. B. O., K. Butler, Davide Curreli, et al.. (2024). Investigation of Materials for Radio Frequency Antenna Plasma Facing Components. IEEE Transactions on Plasma Science. 52(9). 4037–4042. 1 indexed citations
4.
Przybilla, N., et al.. (2023). Quantitative spectroscopy of late O-type main-sequence stars with a hybrid non-LTE method. Astronomy and Astrophysics. 671. A36–A36. 9 indexed citations
5.
Przybilla, N., et al.. (2022). Quantitative spectroscopy of B-type supergiants. Astronomy and Astrophysics. 668. A92–A92. 14 indexed citations
6.
González, J. F., S. Hubrig, N. Przybilla, et al.. (2017). B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula.. Monthly Notices of the Royal Astronomical Society. stx105–stx105. 7 indexed citations
7.
Castro, N., L. Fossati, S. Hubrig, et al.. (2016). B field in OB stars (BOB): The outstandingly strong magnetic field in the evolved He-strong star CPD −62° 2124. Astronomy and Astrophysics. 597. L6–L6. 22 indexed citations
8.
Shi, Jianrong, T. Gehren, K. Butler, L. Mashonkina, & Gang Zhao. (2008). Statistical equilibrium of silicon in the solar atmosphere. Springer Link (Chiba Institute of Technology). 31 indexed citations
9.
Przybilla, N., M. F. Nieva, U. Heber, et al.. (2008). LMC origin of the hyper-velocity star HE 0437-5439. Astronomy and Astrophysics. 480(3). L37–L40. 37 indexed citations
10.
Morel, T., K. Butler, Richard J. Stancliffe, et al.. (2007). Reconciling Solar Interior Models and Helioseismological Data: Constraints on the Neon Content of the Sun from Nearby B Stars. AIP conference proceedings. 225–228. 1 indexed citations
11.
Przybilla, N., et al.. (2006). Quantitative spectroscopy of BA-type supergiants. Springer Link (Chiba Institute of Technology). 58 indexed citations
12.
Przybilla, N., K. Butler, U. Heber, & C. S. Jeffery. (2005). Extreme helium stars: non-LTE matters. Astronomy and Astrophysics. 443(3). L25–L28. 22 indexed citations
13.
Daflon, S., Kátia Cunha, Verne V. Smith, & K. Butler. (2003). Non-LTE abundances of magnesium, aluminum and sulfur in OB stars\nnear the solar circle. Springer Link (Chiba Institute of Technology). 22 indexed citations
14.
Przybilla, N., K. Butler, & Rolf‐Peter Kudritzki. (2001). Non-LTE line-formation for neutral and singly-ionized carbon. Astronomy and Astrophysics. 379(3). 936–954. 35 indexed citations
15.
Butler, K. & C. J. Zeippen. (2001). Atomic data from the IRON Project. Astronomy and Astrophysics. 372(3). 1083–1087. 13 indexed citations
16.
Butler, K. & C. J. Zeippen. (2000). Atomic data from the IRON Project. Astronomy and Astrophysics Supplement Series. 143(3). 483–489. 15 indexed citations
17.
Butler, K., et al.. (1998). Non-LTE analysis of neutral magnesium in the solar atmosphere. 333(1). 219–230. 5 indexed citations
18.
Butler, K. & C. J. Zeippen. (1994). Atomic data from the IRON Project. V. Effective collision strengths for transitions in the ground configuration of oxygen-like ions.. Astronomy & Astrophysics Supplement Series. 108. 1–8. 5 indexed citations
19.
Butler, K., et al.. (1990). Non-LTE equivalent widths for Si II, III and IV. Astronomy & Astrophysics Supplement Series. 84(1). 95–132.
20.
Butler, K. & C. J. Zeippen. (1984). N I forbidden lines revisited. A&A. 141(1). 274–278. 7 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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