L.A. LaJohn

1.8k total citations · 2 hit papers
25 papers, 1.6k citations indexed

About

L.A. LaJohn is a scholar working on Atomic and Molecular Physics, and Optics, Radiation and Surfaces, Coatings and Films. According to data from OpenAlex, L.A. LaJohn has authored 25 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Atomic and Molecular Physics, and Optics, 9 papers in Radiation and 8 papers in Surfaces, Coatings and Films. Recurrent topics in L.A. LaJohn's work include Atomic and Molecular Physics (13 papers), X-ray Spectroscopy and Fluorescence Analysis (9 papers) and Advanced Chemical Physics Studies (9 papers). L.A. LaJohn is often cited by papers focused on Atomic and Molecular Physics (13 papers), X-ray Spectroscopy and Fluorescence Analysis (9 papers) and Advanced Chemical Physics Studies (9 papers). L.A. LaJohn collaborates with scholars based in United States, India and Canada. L.A. LaJohn's co-authors include P. A. Christiansen, Richard B. Ross, Walter C. Ermler, Joseph M. Powers, T M Luke, James D. Talman, R. H. Pratt, R. H. Pratt, B. Chatterjee and R. W. Dunford and has published in prestigious journals such as Physical Review Letters, The Journal of Chemical Physics and Analytical Biochemistry.

In The Last Decade

L.A. LaJohn

24 papers receiving 1.5k citations

Hit Papers

align trajectories

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.

A b i n i t i o relativistic effective potentials with spin–orbit operators. III. Rb through Xe

1987 706 citations L.A. LaJohn, P. A. Christiansen et al. The Journal of Chemical Physics profile →
A b i n i t i o relativistic effective potentials with spin–orbit operators. IV. Cs through Rn

1990 592 citations Richard B. Ross, Joseph M. Powers et al. The Journal of Chemical Physics profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
L.A. LaJohn United States	12	1.1k	530	408	227	207	25	1.6k
Yasuyuki Ishikawa Puerto Rico	24	1.5k 1.4×	526 1.0×	336 0.8×	257 1.1×	292 1.4×	89	2.1k
Eisaku Miyoshi Japan	26	1.3k 1.2×	566 1.1×	462 1.1×	355 1.6×	279 1.3×	99	1.9k
Alain St‐Amant Canada	16	841 0.8×	487 0.9×	242 0.6×	214 0.9×	183 0.9×	26	1.2k
Ilya G. Kaplan Mexico	19	906 0.8×	361 0.7×	188 0.5×	173 0.8×	165 0.8×	92	1.4k
Masahiro Sekiya Japan	19	825 0.8×	291 0.5×	283 0.7×	226 1.0×	100 0.5×	37	1.1k
Thomas F. Magnera United States	19	600 0.6×	396 0.7×	228 0.6×	397 1.7×	241 1.2×	36	1.4k
J.-C. Barthelat France	23	1.1k 1.0×	450 0.8×	475 1.2×	195 0.9×	181 0.9×	39	1.6k
Nikolai B. Balabanov United States	13	1.1k 1.0×	570 1.1×	527 1.3×	210 0.9×	162 0.8×	15	1.9k
Anders Heiberg Norway	8	1.2k 1.1×	564 1.1×	312 0.8×	375 1.7×	199 1.0×	17	1.8k
Phillip A. Christiansen United States	14	956 0.9×	337 0.6×	298 0.7×	200 0.9×	149 0.7×	15	1.3k

Countries citing papers authored by L.A. LaJohn

Since Specialization

Citations

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

Fields of papers citing papers by L.A. LaJohn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by L.A. LaJohn. 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 L.A. LaJohn. The network helps show where L.A. LaJohn may publish in the future.

Co-authorship network of co-authors of L.A. LaJohn

This figure shows the co-authorship network connecting the top 25 collaborators of L.A. LaJohn. A scholar is included among the top collaborators of L.A. LaJohn 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 L.A. LaJohn. L.A. LaJohn 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

Jose, Jobin, et al.. (2011). Cooper minima: a window on nondipole photoionization at low energy. Journal of Physics B Atomic Molecular and Optical Physics. 44(20). 201001–201001. 15 indexed citations

LaJohn, L.A.. (2010). Low-momentum-transfer nonrelativistic limit of the relativistic impulse approximation expression for Compton-scattering doubly differential cross sections and characterization of their relativistic contributions. Physical Review A. 81(4). 8 indexed citations

Chatterjee, B., S.C. Roy, T. Surić, L.A. LaJohn, & R. H. Pratt. (2007). Asymmetry and the shift of the Compton profile. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 580(1). 22–24. 3 indexed citations

Southworth, S. H., R. W. Dunford, E. P. Kanter, et al.. (2006). Nondipole asymmetries of K-shell photoelectrons of Kr, , and. Radiation Physics and Chemistry. 75(11). 1574–1577. 7 indexed citations

Chatterjee, B., et al.. (2006). Investigations on compton scattering: New directions. Radiation Physics and Chemistry. 75(12). 2165–2173. 4 indexed citations

LaJohn, L.A. & R. H. Pratt. (2004). Higher multipole high energy radiation transition matrix element zeros. Radiation Physics and Chemistry. 71(3-4). 665–666.

LaJohn, L.A. & R. H. Pratt. (2003). Relativistic electric-dipole matrix-element zeros. Physical Review A. 67(3). 3 indexed citations

LaJohn, L.A. & R. H. Pratt. (2001). Circumstances in which radiation is not absorbed, forbidding photoionization: four classes of matrix element zeros. Radiation Physics and Chemistry. 61(3-6). 365–366. 1 indexed citations

LaJohn, L.A. & R. H. Pratt. (1998). Beyond Dipole Effects in Atomic Processes. Radiation Physics and Chemistry. 51(4-6). 355–356. 1 indexed citations

10.

LaJohn, L.A. & R. H. Pratt. (1998). Atomic information in the characterization of atomic photoionization. Physical Review A. 58(6). 4989–4992. 5 indexed citations

11.

Jung, Matthias, R. W. Dunford, D. S. Gemmell, et al.. (1998). Manifestations of Nonlocal Exchange, Correlation, and Dynamic Effects in X-Ray Scattering. Physical Review Letters. 81(8). 1596–1599. 32 indexed citations

12.

LaJohn, L.A. & James D. Talman. (1998). Variational solution of the single-particle Dirac equation in the field of two nuclei using relativistically adapted Slater basis functions. Theoretical Chemistry Accounts. 99(5). 351–356. 8 indexed citations

13.

Pratt, R. H. & L.A. LaJohn. (1995). The need to include multipole effects beyond the dipole approximation in the description of photoionization both at nonrelativistic and relativistic energies. Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms. 99(1-4). 136–139. 6 indexed citations

14.

LaJohn, L.A.. (1994). Radiative lifetimes of the 2p⁵3lstates in Ne like Al and Cl. Physica Scripta. 49(2). 169–172. 4 indexed citations

15.

LaJohn, L.A. & T M Luke. (1993). Calculation of spin forbidden decay rates of the 3s3p^{3 5}S⁰₂level in the Si isoelectronic sequence for 15 ⩽Z⩽ 30. Physica Scripta. 47(4). 542–545. 22 indexed citations

16.

Ross, Richard B., et al.. (1990). A b i n i t i o relativistic effective potentials with spin–orbit operators. IV. Cs through Rn. The Journal of Chemical Physics. 93(9). 6654–6670. 592 indexed citations breakdown →

17.

Christiansen, P. A. & L.A. LaJohn. (1988). Local potential error in quantum Monte Carlo calculations of the Mg ionization potential. Chemical Physics Letters. 146(1-2). 162–164. 4 indexed citations

18.

LaJohn, L.A., et al.. (1987). A b i n i t i o relativistic effective potentials with spin–orbit operators. III. Rb through Xe. The Journal of Chemical Physics. 87(5). 2812–2824. 706 indexed citations breakdown →

19.

LaJohn, L.A., et al.. (1978). A preparative method for purification of riboflavin 5′-monophosphate. Analytical Biochemistry. 86(2). 526–530. 12 indexed citations

20.

Phillips, Allen T., L.A. LaJohn, & Barbara Lewis. (1977). O-methylhydroxylamine as a reagent for NAD+ modification in urocanase. Archives of Biochemistry and Biophysics. 184(1). 215–221. 13 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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