A. Kojima

1.3k total citations
76 papers, 494 citations indexed

About

A. Kojima is a scholar working on Aerospace Engineering, Nuclear and High Energy Physics and Electrical and Electronic Engineering. According to data from OpenAlex, A. Kojima has authored 76 papers receiving a total of 494 indexed citations (citations by other indexed papers that have themselves been cited), including 52 papers in Aerospace Engineering, 45 papers in Nuclear and High Energy Physics and 42 papers in Electrical and Electronic Engineering. Recurrent topics in A. Kojima's work include Particle accelerators and beam dynamics (50 papers), Magnetic confinement fusion research (45 papers) and Plasma Diagnostics and Applications (30 papers). A. Kojima is often cited by papers focused on Particle accelerators and beam dynamics (50 papers), Magnetic confinement fusion research (45 papers) and Plasma Diagnostics and Applications (30 papers). A. Kojima collaborates with scholars based in Japan, United States and Italy. A. Kojima's co-authors include M. Kashiwagi, H. Tobari, K. Watanabe, N. Umeda, M. Hanada, L. Grisham, M. Yoshida, J. Hiratsuka, Masahiro Ichikawa and Takashi Inoue and has published in prestigious journals such as IEEE Transactions on Automatic Control, Review of Scientific Instruments and International Journal of Control.

In The Last Decade

A. Kojima

66 papers receiving 465 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
A. Kojima Japan 13 334 305 266 78 63 76 494
C. C. Tsai United States 16 441 1.3× 147 0.5× 327 1.2× 64 0.8× 40 0.6× 53 696
T.S. Bigelow United States 13 141 0.4× 175 0.6× 233 0.9× 44 0.6× 53 0.8× 45 432
N. Phinney United States 8 139 0.4× 161 0.5× 254 1.0× 21 0.3× 58 0.9× 41 379
B.M. Novac United Kingdom 14 273 0.8× 152 0.5× 404 1.5× 330 4.2× 82 1.3× 144 750
Christopher Allen United States 10 195 0.6× 78 0.3× 175 0.7× 30 0.4× 42 0.7× 53 302
Junhyung Jeong South Korea 12 194 0.6× 225 0.7× 198 0.7× 11 0.1× 80 1.3× 77 509
Gert Witvoet Netherlands 10 63 0.2× 86 0.3× 91 0.3× 185 2.4× 43 0.7× 60 373
L. Grando Italy 12 240 0.7× 437 1.4× 230 0.9× 29 0.4× 217 3.4× 58 623
G. M. Wallace United States 18 427 1.3× 899 2.9× 169 0.6× 41 0.5× 279 4.4× 120 1.1k
F. Milani Italy 11 203 0.6× 550 1.8× 146 0.5× 34 0.4× 277 4.4× 37 650

Countries citing papers authored by A. Kojima

Since Specialization
Citations

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

Fields of papers citing papers by A. Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of A. Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of A. Kojima. A scholar is included among the top collaborators of A. Kojima 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. Kojima. A. Kojima 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.
Kojima, A., et al.. (2025). In-Hand Manipulation Using Interaction Mode Control in Polar Coordinate System. IEEJ Journal of Industry Applications. 14(2). 177–187.
2.
Kashiwagi, M., M. Kisaki, A. Kojima, et al.. (2022). Study of beamlets extracted from a multi-aperture and five-stage acceleration system. Review of Scientific Instruments. 93(5). 53301–53301. 7 indexed citations
3.
Kisaki, M., A. Kojima, J. Hiratsuka, et al.. (2022). Reverse trajectory analysis of the hydrogen negative ion beam in a prototype accelerator for ITER. Journal of Physics Conference Series. 2244(1). 12061–12061. 3 indexed citations
4.
Denizeau, S., D. Aprile, P. Agostinetti, et al.. (2021). Benchmark of beam acceleration codes on a high voltage negative ion accelerator for fusion with a new hypothesis on the beam meniscus. Fusion Engineering and Design. 168. 112374–112374. 2 indexed citations
5.
Kojima, A., et al.. (2021). Genetic characterization of Trichomonas gallinae (Rivolta, 1878) in companion birds in Japan and the genotypical relationship in the Asia region. Journal of Microbiology Immunology and Infection. 55(3). 527–534. 9 indexed citations
6.
Kojima, A., M. Kisaki, K. Watanabe, et al.. (2021). Vacuum Insulation in Negative Ion Accelerator with Long Gap and Large Surface for Fusion Application. 57. 420–425. 1 indexed citations
7.
Tokiwa, Toshihiro, et al.. (2020). Resurrection of the genus Eumonospora (Apicomplexa: Sarcocystidae) for Caryospora species without Stieda body. Parasitology International. 77. 102101–102101. 8 indexed citations
8.
Ichikawa, Masahiro, A. Kojima, J. Hiratsuka, et al.. (2020). Achievement of stable negative ion production with Cs-seeded for long pulse beam operation in the prototype of Cs-seeded negative ion source for JT-60SA. Review of Scientific Instruments. 91(2). 23502–23502. 5 indexed citations
9.
Hiratsuka, J., Masahiro Ichikawa, N. Umeda, et al.. (2020). Experimental investigation of the Cs behavior in the cesiated H− ion source during high power long beam operation. Review of Scientific Instruments. 91(1). 13513–13513. 2 indexed citations
10.
Hiratsuka, J., M. Kashiwagi, Masahiro Ichikawa, et al.. (2020). Achievement of high power and long pulse negative ion beam acceleration for JT-60SA NBI. Review of Scientific Instruments. 91(2). 23506–23506. 13 indexed citations
11.
Tobari, H., M. Kashiwagi, K. Watanabe, et al.. (2017). Progress on design and manufacturing of dc ultra-high voltage component for ITER NBI. Fusion Engineering and Design. 123. 309–312. 4 indexed citations
12.
Kojima, A., et al.. (2016). Sparse Kernel Regression Based on Nonparametric Bayesian Model. IEICE Technical Report; IEICE Tech. Rep.. 115(522). 335–340.
13.
Tokiwa, Toshihiro, et al.. (2016). Isospora lunaris n. sp. (Apicomplexa: Eimeriidae) from the domestic Java sparrow in Japan. Parasitology International. 66(2). 100–105. 6 indexed citations
14.
Ichikawa, Masahiro, M. Yoshida, A. Kojima, et al.. (2016). Investigation of Oxygen-Induced-Arcing in Cs-Seeded Negative Ion Source. Plasma and Fusion Research. 11(0). 2405108–2405108. 4 indexed citations
15.
Ishida, Ryo, et al.. (2014). Dependence of Vacuum Electrical Breakdown Field and Field Enhancement Factor on the Number of Apertures Drilled in Small Electrodes. IEEJ Transactions on Fundamentals and Materials. 134(12). 622–628.
16.
Yoshida, M., A. Kojima, M. Kashiwagi, et al.. (2013). Improvement of uniformity of the negative ion beams by tent-shaped magnetic field in the JT-60 negative ion source. Review of Scientific Instruments. 85(2). 02B314–02B314. 16 indexed citations
17.
Taniguchi, M., M. Kashiwagi, N. Umeda, et al.. (2012). Voltage holding study of 1 MeV accelerator for ITER neutral beam injector. Review of Scientific Instruments. 83(2). 02B121–02B121. 14 indexed citations
18.
SHOJI, Gaku, et al.. (2008). MECHANISM OF SEISMIC RESPONSE OF A PC CABLE-STAYED BRIDGE SUBJECTED TO A LONG-PERIOD SEISMIC EXCITATION. Doboku Gakkai Ronbunshuu A. 64(4). 982–1001. 11 indexed citations
19.
Kojima, A. & Sumio Ishijima. (2004). Formulas on preview and delayed H∞ control. 6. 6532–6538. 15 indexed citations
20.
Kojima, A., K. Uchida, & E. Shimemura. (1993). Robust stabilization of uncertain time delay systems via combined internal-external approach. IEEE Transactions on Automatic Control. 38(2). 373–378. 19 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by C. C. Tsai Breakdown of academic impact, for papers by T.S. Bigelow Breakdown of academic impact, for papers by N. Phinney Breakdown of academic impact, for papers by B.M. Novac Breakdown of academic impact, for papers by Christopher Allen Breakdown of academic impact, for papers by Junhyung Jeong Breakdown of academic impact, for papers by Gert Witvoet Breakdown of academic impact, for papers by L. Grando Breakdown of academic impact, for papers by G. M. Wallace Breakdown of academic impact, for papers by F. Milani
Rankless by CCL
2026