A. S. Penfold

1.2k total citations · 1 hit paper
29 papers, 839 citations indexed

About

A. S. Penfold is a scholar working on Radiation, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, A. S. Penfold has authored 29 papers receiving a total of 839 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Radiation, 11 papers in Electrical and Electronic Engineering and 8 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in A. S. Penfold's work include Nuclear Physics and Applications (11 papers), Plasma Diagnostics and Applications (6 papers) and Particle accelerators and beam dynamics (4 papers). A. S. Penfold is often cited by papers focused on Nuclear Physics and Applications (11 papers), Plasma Diagnostics and Applications (6 papers) and Particle accelerators and beam dynamics (4 papers). A. S. Penfold collaborates with scholars based in United States and Canada. A. S. Penfold's co-authors include L. Katz, B.M. Spicer, E. L. Garwin, John A. Thornton, James L. Lamb, B. C. Cook, V. L. Telegdi and G.Y. Yeom and has published in prestigious journals such as Reviews of Modern Physics, Journal of Applied Physics and AIAA Journal.

In The Last Decade

A. S. Penfold

27 papers receiving 741 citations

Hit Papers

Range-Energy Relations for Electrons and the Determinatio... 1952 2026 1976 2001 1952 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. Range-Energy Relations for Electrons and the Determination of Beta-Ray End-Point Energies by Absorption
    1952 482 citations L. Katz, A. S. Penfold Reviews of Modern Physics profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
A. S. Penfold United States 9 421 194 186 168 160 29 839
Rinsuke Ito Japan 15 398 0.9× 104 0.5× 211 1.1× 199 1.2× 177 1.1× 42 849
C. J. MacCallum United States 15 377 0.9× 262 1.4× 159 0.9× 248 1.5× 197 1.2× 42 1.0k
E. J. Kobetich United States 11 301 0.7× 175 0.9× 264 1.4× 107 0.6× 138 0.9× 16 797
J Janni United States 4 610 1.4× 122 0.6× 118 0.6× 86 0.5× 227 1.4× 13 879
E. A. Wolicki United States 18 307 0.7× 259 1.3× 563 3.0× 166 1.0× 184 1.1× 35 1.1k
Jacob Neufeld United States 12 132 0.3× 142 0.7× 96 0.5× 138 0.8× 369 2.3× 52 767
E. L. Hubbard United States 10 296 0.7× 163 0.8× 136 0.7× 102 0.6× 119 0.7× 30 597
F. Biggs United States 8 422 1.0× 85 0.4× 98 0.5× 320 1.9× 302 1.9× 23 864
B. F. Williams United States 14 119 0.3× 107 0.6× 242 1.3× 142 0.8× 224 1.4× 22 751
L.C. McIntyre United States 17 375 0.9× 373 1.9× 170 0.9× 191 1.1× 433 2.7× 61 1.1k

Countries citing papers authored by A. S. Penfold

Since Specialization
Citations

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

Fields of papers citing papers by A. S. Penfold

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of A. S. Penfold

This figure shows the co-authorship network connecting the top 25 collaborators of A. S. Penfold. A scholar is included among the top collaborators of A. S. Penfold 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 A. S. Penfold. A. S. Penfold 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.
Penfold, A. S.. (1989). Early days of magnetron sputtering—an enigma. Thin Solid Films. 171(1). 99–108. 5 indexed citations
2.
Yeom, G.Y., John A. Thornton, & A. S. Penfold. (1988). Magnetic field designs for cylindrical-post magnetron discharge sources. Journal of Vacuum Science & Technology A Vacuum Surfaces and Films. 6(6). 3156–3158. 6 indexed citations
3.
Penfold, A. S., et al.. (1973). Structured discharges in high frequency plasmas. Czechoslovak Journal of Physics. 23(4). 431–435. 12 indexed citations
4.
Penfold, A. S., et al.. (1968). The Minimum Specific Energy and Electric Field Necessary to Sustain a Flowing Induction Plasma. Journal of Applied Physics. 39(1). 340–342. 5 indexed citations
5.
Penfold, A. S., et al.. (1967). Current Measurements in High-Voltage Radio Frequency Plasma Discharges. Review of Scientific Instruments. 38(10). 1533–1535.
6.
Penfold, A. S., et al.. (1966). Experimental study of a traveling-wave accelerator.. AIAA Journal. 4(10). 1870–1872. 5 indexed citations
7.
Thornton, John A., et al.. (1966). EXPERIMENTAL STUDY OF PLASMA FLOW PROCESSES IN THE TRAVELING WAVE ACCELERATOR. 1 indexed citations
8.
Penfold, A. S. & E. L. Garwin. (1960). Betatron Energy Calibration by Magnetic Field Measurement. Review of Scientific Instruments. 31(2). 155–163. 3 indexed citations
9.
Garwin, E. L. & A. S. Penfold. (1960). Instrumentation for Medium Energy Gamma-Ray Scattering Measurements. Review of Scientific Instruments. 31(8). 853–860. 2 indexed citations
10.
Penfold, A. S. & E. L. Garwin. (1959). Photonuclear Cross Sections forA40. Physical Review. 114(4). 1139–1142. 8 indexed citations
11.
Garwin, E. L., et al.. (1959). Simple Zero Field Indicator for Betatrons. Review of Scientific Instruments. 30(3). 203–203. 1 indexed citations
12.
Penfold, A. S., et al.. (1959). Analysis of Photonuclear Cross Sections. Physical Review. 114(5). 1332–1337. 101 indexed citations
13.
Penfold, A. S. & E. L. Garwin. (1959). Photonuclear Reaction Energies. Physical Review. 115(2). 420–424. 16 indexed citations
14.
Penfold, A. S., et al.. (1958). Silicon Diodes as Protective Meter Shunts. Review of Scientific Instruments. 29(3). 252–253. 1 indexed citations
15.
Garwin, E. L. & A. S. Penfold. (1957). Linear Gate of 200 Millimicrosecond Duration. Review of Scientific Instruments. 28(2). 116–119. 4 indexed citations
16.
Cook, B. C., A. S. Penfold, & V. L. Telegdi. (1956). C13(γ, p)B12Cross Section. Physical Review. 104(2). 554–555. 5 indexed citations
17.
Penfold, A. S.. (1955). Photonuclear Cross-Section of Oxygen.. 1 indexed citations
18.
Spicer, B.M. & A. S. Penfold. (1955). Energy Stability of the 22-Mev Betatron at the University of Illinois. Review of Scientific Instruments. 26(10). 952–953. 7 indexed citations
19.
Penfold, A. S. & B.M. Spicer. (1955). Detailed Study of theO16(γ, n)O15Reaction. Physical Review. 100(5). 1377–1386. 55 indexed citations
20.
Katz, L. & A. S. Penfold. (1952). Range-Energy Relations for Electrons and the Determination of Beta-Ray End-Point Energies by Absorption. Reviews of Modern Physics. 24(1). 28–44. 482 indexed citations breakdown →

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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