D. A. Knapp

2.8k total citations
35 papers, 2.2k citations indexed

About

D. A. Knapp is a scholar working on Atomic and Molecular Physics, and Optics, Radiation and Spectroscopy. According to data from OpenAlex, D. A. Knapp has authored 35 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Atomic and Molecular Physics, and Optics, 16 papers in Radiation and 16 papers in Spectroscopy. Recurrent topics in D. A. Knapp's work include Atomic and Molecular Physics (29 papers), Mass Spectrometry Techniques and Applications (16 papers) and X-ray Spectroscopy and Fluorescence Analysis (12 papers). D. A. Knapp is often cited by papers focused on Atomic and Molecular Physics (29 papers), Mass Spectrometry Techniques and Applications (16 papers) and X-ray Spectroscopy and Fluorescence Analysis (12 papers). D. A. Knapp collaborates with scholars based in United States and France. D. A. Knapp's co-authors include R. E. Marrs, J. Henderson, M. B. Schneider, M. A. Levine, P. Beiersdörfer, Morton A. Levine, S. R. Elliott, J. H. Scofield, C. L. Bennett and S. R. Elliott and has published in prestigious journals such as Physical Review Letters, Physical Review A and Life Sciences.

In The Last Decade

D. A. Knapp

35 papers receiving 2.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
D. A. Knapp United States 22 1.9k 931 778 759 290 35 2.2k
C. Dal Cappello France 26 1.9k 1.0× 937 1.0× 467 0.6× 426 0.6× 311 1.1× 124 2.0k
R. D. DuBois United States 24 1.8k 0.9× 597 0.6× 326 0.4× 884 1.2× 213 0.7× 70 2.0k
P D Fainstein Argentina 30 2.9k 1.5× 1.1k 1.1× 702 0.9× 789 1.0× 585 2.0× 116 3.0k
A. Salop United States 19 1.6k 0.9× 615 0.7× 293 0.4× 604 0.8× 257 0.9× 36 1.9k
J. Hanssen France 27 1.9k 1.0× 720 0.8× 347 0.4× 361 0.5× 225 0.8× 98 2.0k
H. Knudsen Denmark 24 1.7k 0.9× 582 0.6× 243 0.3× 798 1.1× 300 1.0× 54 2.1k
L. H. Toburen United States 28 2.1k 1.1× 666 0.7× 367 0.5× 1.3k 1.7× 234 0.8× 78 2.5k
D. H. Crandall United States 29 1.8k 0.9× 998 1.1× 498 0.6× 605 0.8× 181 0.6× 57 2.0k
K T Dolder United Kingdom 31 2.0k 1.0× 1.1k 1.1× 411 0.5× 567 0.7× 177 0.6× 75 2.2k
J. F. Reading United States 27 1.9k 1.0× 377 0.4× 333 0.4× 911 1.2× 447 1.5× 96 2.0k

Countries citing papers authored by D. A. Knapp

Since Specialization
Citations

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

Fields of papers citing papers by D. A. Knapp

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of D. A. Knapp

This figure shows the co-authorship network connecting the top 25 collaborators of D. A. Knapp. A scholar is included among the top collaborators of D. A. Knapp 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 D. A. Knapp. D. A. Knapp 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.
Siantar, Christine L. Hartmann, R. S. Walling, T.P. Daly, et al.. (2001). Description and dosimetric verification of the PEREGRINE Monte Carlo dose calculation system for photon beams incident on a water phantom. Medical Physics. 28(7). 1322–1337. 142 indexed citations
2.
Beiersdörfer, P., V. Decaux, S. R. Elliott, et al.. (1995). Spectroscopy and atomic physics in EBIT and superEBIT. AIP conference proceedings. 322. 129–140. 2 indexed citations
3.
Knapp, D. A., P. Beiersdörfer, M-H. Chen, J. H. Scofield, & D. Schneider. (1995). Observation of Interference between Dielectronic Recombination and Radiative Recombination in Highly Charged Uranium Ions. Physical Review Letters. 74(1). 54–57. 81 indexed citations
4.
Beiersdörfer, P., A. L. Osterheld, S. R. Elliott, et al.. (1995). Structure and Lamb shift of 2s1/2-2p3/2levels in lithiumlikeTh87+through neonlikeTh80+. Physical Review A. 52(4). 2693–2706. 61 indexed citations
5.
Briere, M. A., et al.. (1994). Studies of the interaction of slow very highly charged ions with solid surfaces using the LLNL EBIT facility. Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms. 90(1-4). 231–236. 14 indexed citations
6.
Schuch, R., Dieter Schneider, D. A. Knapp, et al.. (1993). Evidence for internal dielectronic excitation of slow highly charged uranium ions. Physical Review Letters. 70(8). 1073–1076. 43 indexed citations
7.
Beiersdörfer, P., et al.. (1993). Structure and Lamb shift of 2s1/2-2p3/2levels in lithiumlikeU89+through neonlikeU82+. Physical Review Letters. 71(24). 3939–3942. 90 indexed citations
8.
Knapp, D. A., et al.. (1993). Dielectronic recombination of heliumlike ions. Physical Review A. 47(3). 2039–2046. 78 indexed citations
9.
Knapp, D. A., et al.. (1993). A high-energy electron beam ion trap for production of high-charge high-Z ions. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 334(2-3). 305–312. 98 indexed citations
10.
MacLaren, S. A., P. Beiersdörfer, D. A. Vogel, et al.. (1992). Precision measurement of theKα transitions in heliumlikeGe30+. Physical Review A. 45(1). 329–332. 35 indexed citations
11.
Beiersdörfer, P., R. Cauble, S. Chantrenne, et al.. (1991). Electron-ion interaction cross sections determined by x ray spectroscopy on EBIT. University of North Texas Digital Library (University of North Texas). 10–16. 2 indexed citations
12.
Penetrante, B. M., J. N. Bardsley, Morton A. Levine, D. A. Knapp, & R. E. Marrs. (1991). Evaporative cooling of highly charged dysprosium ions in an enhanced electron-beam ion trap. Physical Review A. 43(9). 4873–4882. 45 indexed citations
13.
Marrs, R. E., P. Beiersdörfer, C. L. Bennett, et al.. (1989). Atomic physics measurements in an electron beam ion trap. AIP conference proceedings. 188. 445–456. 3 indexed citations
14.
Knapp, D. A., R. E. Marrs, M. A. Levine, et al.. (1989). Dielectronic recombination of heliumlike nickel. Physical Review Letters. 62(18). 2104–2107. 93 indexed citations
15.
Marrs, R. E., C. L. Bennett, M.H. Chen, et al.. (1989). X-RAY SPECTROSCOPY OF HIGHLY-IONIZED ATOMS IN AN ELECTRON BEAM ION TRAP (EBIT). Le Journal de Physique Colloques. 50(C1). C1–445. 12 indexed citations
16.
Brown, C. M., U. Feldman, G. A. Doschek, et al.. (1989). Measurement of relative electron-impact-excitation cross sections forFe24+. Physical review. A, General physics. 40(7). 4089–4092. 28 indexed citations
17.
Marrs, R. E., M. A. Levine, D. A. Knapp, & J. Henderson. (1988). Measurement of electron-impact–excitation cross sections for very highly charged ions. Physical Review Letters. 60(17). 1715–1718. 239 indexed citations
18.
Levine, Morton A., R. E. Marrs, J. Henderson, D. A. Knapp, & M. B. Schneider. (1988). The Electron Beam Ion Trap: A New Instrument for Atomic Physics Measurements. Physica Scripta. T22. 157–163. 369 indexed citations
19.
Knapp, D. A., et al.. (1973). Gas chromatographic separation of the K-region epoxide and of the cis-and trans-11,12-diol derivatives of 3-methylcholanthrene. Life Sciences. 12(9). 425–429. 6 indexed citations
20.
Knapp, D. A., et al.. (1973). Going down with Janis. Medical Entomology and Zoology. 1 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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