R. E. Trees

997 total citations
23 papers, 864 citations indexed

About

R. E. Trees is a scholar working on Atomic and Molecular Physics, and Optics, Radiation and Spectroscopy. According to data from OpenAlex, R. E. Trees has authored 23 papers receiving a total of 864 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Atomic and Molecular Physics, and Optics, 8 papers in Radiation and 4 papers in Spectroscopy. Recurrent topics in R. E. Trees's work include Advanced Chemical Physics Studies (7 papers), Atomic and Molecular Physics (5 papers) and Radioactive Decay and Measurement Techniques (4 papers). R. E. Trees is often cited by papers focused on Advanced Chemical Physics Studies (7 papers), Atomic and Molecular Physics (5 papers) and Radioactive Decay and Measurement Techniques (4 papers). R. E. Trees collaborates with scholars based in United States. R. E. Trees's co-authors include Chr. Klixbüll Jørgensen, William R. Bozman, P. Rabinowitz, C.H. Corliss and William F. Meggers and has published in prestigious journals such as Journal of the Optical Society of America, Physical Review and Journal of Research of the National Bureau of Standards Section A Physics and Chemistry.

In The Last Decade

R. E. Trees

23 papers receiving 799 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
R. E. Trees United States	15	602	188	135	129	129	23	864
S. Fraga Canada	12	853 1.4×	267 1.4×	182 1.3×	115 0.9×	129 1.0×	42	1.2k
Edward Catalano United States	16	316 0.5×	335 1.8×	172 1.3×	155 1.2×	153 1.2×	35	878
S. A. Al'Tshuler United States	10	345 0.6×	245 1.3×	76 0.6×	154 1.2×	57 0.4×	25	677
U. Hauser Germany	14	282 0.5×	226 1.2×	95 0.7×	219 1.7×	45 0.3×	27	674
J. C. Eisenstein United States	16	294 0.5×	447 2.4×	75 0.6×	157 1.2×	273 2.1×	29	786
Jaime Keller Mexico	16	442 0.7×	195 1.0×	45 0.3×	100 0.8×	59 0.5×	89	795
H. Lew Canada	17	827 1.4×	107 0.6×	448 3.3×	48 0.4×	79 0.6×	26	1.1k
Peter Brix Germany	14	398 0.7×	132 0.7×	167 1.2×	67 0.5×	75 0.6×	46	800
G. Verhaegen Belgium	24	958 1.6×	320 1.7×	296 2.2×	75 0.6×	183 1.4×	40	1.3k
W.J. Huiskamp Netherlands	24	510 0.8×	607 3.2×	230 1.7×	668 5.2×	107 0.8×	113	1.6k

Countries citing papers authored by R. E. Trees

Since Specialization

Citations

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

Fields of papers citing papers by R. E. Trees

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R. E. Trees. 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. E. Trees. The network helps show where R. E. Trees may publish in the future.

Co-authorship network of co-authors of R. E. Trees

This figure shows the co-authorship network connecting the top 25 collaborators of R. E. Trees. A scholar is included among the top collaborators of R. E. Trees 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. E. Trees. R. E. Trees is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Trees, R. E.. (1964). 4f^3 and 4f^25d Configurations of Doubly Ionized Praseodymium (Pr iii). Journal of the Optical Society of America. 54(5). 651–651. 47 indexed citations

Trees, R. E.. (1963). Nonlinear Effects in Spectra of the Iron Group. Physical Review. 129(3). 1220–1224. 32 indexed citations

Trees, R. E. & Chr. Klixbüll Jørgensen. (1961). Parametersαandβin the Spectra of the Iron Group. Physical Review. 123(4). 1278–1280. 41 indexed citations

Trees, R. E.. (1959). Low even configurations in the first spectrum of ruthenium (Ru I), part 2. Journal of Research of the National Bureau of Standards Section A Physics and Chemistry. 63A(3). 255–255. 4 indexed citations

Trees, R. E.. (1959). Low Even Configurations in the First Spectrum of Ruthenium (Ru i). Journal of the Optical Society of America. 49(9). 838–838. 15 indexed citations

Trees, R. E.. (1958). Comparison of First, Second, and Third Approximations in Bacher and Goudsmit’s Theory of Atomic Spectra. Journal of the Optical Society of America. 48(5). 293–293. 4 indexed citations

Trees, R. E.. (1958). Low Even Configurations in the First Spectrum of Rhenium (Re i). Physical Review. 112(1). 165–171. 15 indexed citations

Trees, R. E.. (1956). Application of the Rayleigh-Schrödinger Perturbation Theory to the Hydrogen Atom. Physical Review. 102(6). 1553–1556. 33 indexed citations

Trees, R. E.. (1956). Application of the Rayleigh-Schrödinger Perturbation Theory to the Hydrogen Atom. Physical Review. 104(6). 1808–1808. 2 indexed citations

10.

Trees, R. E.. (1955). Polarization Energy for3dand4pElectrons. Physical Review. 97(3). 686–689. 1 indexed citations

11.

Trees, R. E., et al.. (1955). Computation of atomic energy levels: Spectrum of singly-ionized tantalum (Ta II). Journal of research of the National Bureau of Standards. 55(6). 335–335. 16 indexed citations

12.

Trees, R. E.. (1954). Bacher and Goudsmit theory of complex spectra. Journal of research of the National Bureau of Standards. 53(1). 35–35. 18 indexed citations

13.

Bozman, William R., C.H. Corliss, William F. Meggers, & R. E. Trees. (1953). An intersystem transition in the first spectrum of beryllium. Journal of research of the National Bureau of Standards. 50(3). 131–131. 16 indexed citations

14.

Trees, R. E.. (1953). Hyperfine Structure Formulas forLSCoupling. Physical Review. 92(2). 308–314. 78 indexed citations

15.

Trees, R. E., et al.. (1953). The Nuclear Moments of Technetium-99. Physical Review. 92(2). 303–307. 15 indexed citations

16.

Trees, R. E., et al.. (1952). Low even configurations of the first spectrum of molybdenum (MoI). Journal of research of the National Bureau of Standards. 49(6). 397–397. 13 indexed citations

17.

Trees, R. E.. (1952). TheL(L+1)Correction to the Slater Formulas for the Energy Levels. Physical Review. 85(2). 382–382. 63 indexed citations

18.

Trees, R. E.. (1951). Term Values in the3d54sConfiguration of Fe III. Physical Review. 84(6). 1089–1091. 107 indexed citations

19.

Trees, R. E.. (1951). Configuration Interaction in Mn II. Physical Review. 83(4). 756–760. 211 indexed citations

20.

Trees, R. E.. (1951). Spin-Spin Interaction. Physical Review. 82(5). 683–688. 112 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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