Takeo Ejima

724 total citations
57 papers, 579 citations indexed

About

Takeo Ejima is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Radiation. According to data from OpenAlex, Takeo Ejima has authored 57 papers receiving a total of 579 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Atomic and Molecular Physics, and Optics, 20 papers in Electrical and Electronic Engineering and 19 papers in Radiation. Recurrent topics in Takeo Ejima's work include Atomic and Molecular Physics (16 papers), Electron and X-Ray Spectroscopy Techniques (13 papers) and Advanced X-ray Imaging Techniques (12 papers). Takeo Ejima is often cited by papers focused on Atomic and Molecular Physics (16 papers), Electron and X-Ray Spectroscopy Techniques (13 papers) and Advanced X-ray Imaging Techniques (12 papers). Takeo Ejima collaborates with scholars based in Japan, Ireland and China. Takeo Ejima's co-authors include Takehiko Ishii, Shigeru Sato, S. Suzuki, Shik Shin, Yasuhisa Tezuka, Tadashi Hatano, Makoto Watanabe, Takeshi Higashiguchi, Mihiro Yanagihara and G. O’Sullivan and has published in prestigious journals such as Physical review. B, Condensed matter, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

Takeo Ejima

52 papers receiving 548 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Takeo Ejima Japan 14 245 200 150 147 121 57 579
M. Busch Germany 16 378 1.5× 189 0.9× 169 1.1× 110 0.7× 39 0.3× 101 753
Ch. Morawe France 17 185 0.8× 151 0.8× 148 1.0× 355 2.4× 71 0.6× 45 681
A. Andrejczuk Poland 14 143 0.6× 180 0.9× 98 0.7× 243 1.7× 38 0.3× 42 535
K. M. Döbrich Germany 14 504 2.1× 171 0.9× 152 1.0× 112 0.8× 29 0.2× 19 729
Alberto Gras-Martí Spain 9 464 1.9× 174 0.9× 168 1.1× 74 0.5× 58 0.5× 19 741
J. C. Woo South Korea 13 355 1.4× 137 0.7× 300 2.0× 64 0.4× 46 0.4× 43 628
D. Fuchs Germany 13 174 0.7× 288 1.4× 197 1.3× 121 0.8× 35 0.3× 30 654
Sergey Lazarev Germany 14 143 0.6× 186 0.9× 142 0.9× 127 0.9× 55 0.5× 45 491
Rintaro Katano Japan 16 282 1.2× 204 1.0× 108 0.7× 161 1.1× 19 0.2× 48 597
R. Ritter Austria 13 198 0.8× 274 1.4× 166 1.1× 96 0.7× 30 0.2× 21 616

Countries citing papers authored by Takeo Ejima

Since Specialization
Citations

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

Fields of papers citing papers by Takeo Ejima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takeo Ejima

This figure shows the co-authorship network connecting the top 25 collaborators of Takeo Ejima. A scholar is included among the top collaborators of Takeo Ejima 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 Takeo Ejima. Takeo Ejima 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.
Morita, Hiroki, Weihua Jiang, Takeo Ejima, et al.. (2024). Laser-produced plasma water-window x-ray source by continuous liquid bismuth jet. Optics Letters. 49(20). 5791–5791.
2.
Ejima, Takeo, et al.. (2020). Demonstration of stimulated emission depletion phenomenon in luminescence of solid-state scintillator excited by soft X-rays. Scientific Reports. 10(1). 5391–5391. 3 indexed citations
3.
Ejima, Takeo, Shunsuke Kurosawa, Akihiro Yamaji, et al.. (2019). Luminescence properties of scintillators in soft X-ray region. Journal of Luminescence. 219. 116850–116850. 4 indexed citations
4.
Wakayama, Toshitaka, et al.. (2019). Supercontinuum vector beam generation by independent manipulations of angular polarization and geometric phase. Applied Physics Letters. 114(23). 6 indexed citations
5.
Kawasaki, Hiromu, Takeo Ejima, Tadashi Hatano, et al.. (2019). Soft X-ray spectral analysis of laser produced molybdenum plasmas using the fundamental and second harmonics of a Nd:YAG laser. Optics Express. 27(23). 33351–33351. 2 indexed citations
6.
Hara, Hiroyuki, Toshiki Tamura, Tadashi Hatano, et al.. (2018). Characteristics of soft x-ray and extreme ultraviolet (XUV) emission from laser-produced highly charged rhodium ions. Journal of Applied Physics. 123(18). 1 indexed citations
7.
Ejima, Takeo, M. Kado, Masato Aoyama, K. Yasuda, & Satoshi Tamotsu. (2017). Organelle Distribution in a Hydrated Bio-cell by Correlation between Soft X-ray and Fluorescence Images. Journal of Physics Conference Series. 849. 12009–12009. 1 indexed citations
8.
Kado, M., Maki Kishimoto, Kunio Shinohara, & Takeo Ejima. (2017). Increase of the emission of laser-produced plasmas under N2 gas atmosphere in the 2.9–6 nm region. Applied Physics Letters. 111(5). 4 indexed citations
9.
Hara, Hiroyuki, Thanh-Hung Dinh, Takeo Ejima, et al.. (2016). Soft X-ray emission from molybdenum plasmas generated by dual laser pulses. Applied Physics Letters. 109(19). 19 indexed citations
10.
Hara, Hiroyuki, Thanh-Hung Dinh, Weihua Jiang, et al.. (2015). Numerical evaluation of a 13.5-nm high-brightness microplasma extreme ultraviolet source. Journal of Applied Physics. 118(19). 9 indexed citations
11.
Ejima, Takeo, Tetsuo Harada, Tadashi Hatano, et al.. (2010). High throughput and wide field of view EUV microscope for blur-free one-shot imaging of living organisms. Optics Express. 18(7). 7203–7203. 20 indexed citations
12.
Watanabe, Makoto, Takeo Ejima, Noboru Miyata, Takashi Imazono, & Mihiro Yanagihara. (2006). Studies of multilayer structure in depth direction by soft X-ray spectroscopy. Nuclear Science and Techniques. 17(5). 257–267. 13 indexed citations
13.
Ejima, Takeo, Atsushi Yamazaki, Katsuhiko Saito, et al.. (2005). Aging and thermal stability of Mg/SiC and Mg/Y_2O_3 reflection multilayers in the 25–35 nm region. Applied Optics. 44(26). 5446–5446. 17 indexed citations
14.
Ejima, Takeo, et al.. (2005). Top layer's thickness dependence on total electron-yield X-ray standing-wave. Journal of Electron Spectroscopy and Related Phenomena. 144-147. 897–899. 4 indexed citations
15.
Ejima, Takeo. (2004). Simulation Study of Total-Electron-Yield X-ray Standing-Wave Spectra of Mo/SiC/Si/SiC and Mo/Si Multilayers. AIP conference proceedings. 705. 1126–1129. 2 indexed citations
16.
Kondo, Yasuhiro, Takeo Ejima, Katsuhiko Saito, Tadashi Hatano, & Makoto Watanabe. (2001). High-reflection multilayer for wavelength range of 200–30 nm. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 467-468. 333–336. 10 indexed citations
17.
Ejima, Takeo, et al.. (2001). Two-Color Reflection Multilayers for He-I and He-II Resonance Lines for Microscopic Ultraviolet Photoelectron Spectroscopy Using Schwarzschild Objective. Japanese Journal of Applied Physics. 40(1R). 376–376. 14 indexed citations
18.
Ejima, Takeo, Shigeru Sato, S. Suzuki, et al.. (1996). Core level dependence of tailing structures in resonant spectra of UC and UB12. Journal of Electron Spectroscopy and Related Phenomena. 78. 151–154. 1 indexed citations
19.
Ejima, Takeo, Yoji Saito, Shin‐ichi Fujimori, et al.. (1996). Line shapes of the XPS U 4fspectra in some uranium compounds. Physical review. B, Condensed matter. 53(4). 1806–1813. 26 indexed citations
20.
Ejima, Takeo, S. Suzuki, Shigeru Sato, et al.. (1994). Resonant Photoemission and X-Ray Photoemission Spectra of UPd2Al3, UPt2Si2and U2PtSi3. Journal of the Physical Society of Japan. 63(6). 2428–2442. 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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