N. Sei

838 total citations
90 papers, 637 citations indexed

About

N. Sei is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Radiation. According to data from OpenAlex, N. Sei has authored 90 papers receiving a total of 637 indexed citations (citations by other indexed papers that have themselves been cited), including 78 papers in Electrical and Electronic Engineering, 40 papers in Atomic and Molecular Physics, and Optics and 37 papers in Radiation. Recurrent topics in N. Sei's work include Particle Accelerators and Free-Electron Lasers (65 papers), Gyrotron and Vacuum Electronics Research (35 papers) and Particle accelerators and beam dynamics (33 papers). N. Sei is often cited by papers focused on Particle Accelerators and Free-Electron Lasers (65 papers), Gyrotron and Vacuum Electronics Research (35 papers) and Particle accelerators and beam dynamics (33 papers). N. Sei collaborates with scholars based in Japan, Poland and China. N. Sei's co-authors include Hiroshi Ogawa, Ken‐ichi Yamada, Hideaki Ohgaki, T. Mikado, Kawakatsu Yamada, Tetsuo Yamazaki, Shigeo Sugiyama, M. Yasumoto, Ryoichi Suzuki and Toshiharu Takahashi and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and Scientific Reports.

In The Last Decade

N. Sei

86 papers receiving 592 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
N. Sei Japan	14	490	320	245	186	160	90	637
O. Williams United States	14	456 0.9×	133 0.4×	371 1.5×	218 1.2×	169 1.1×	46	614
I. Pinayev United States	14	334 0.7×	239 0.7×	278 1.1×	301 1.6×	203 1.3×	76	651
T. Nakazato Japan	11	518 1.1×	204 0.6×	322 1.3×	142 0.8×	185 1.2×	24	619
S. Urasawa Japan	12	512 1.0×	216 0.7×	312 1.3×	145 0.8×	178 1.1×	19	609
Mikhail Yurkov Germany	12	600 1.2×	523 1.6×	239 1.0×	158 0.8×	229 1.4×	52	783
G. Penn United States	14	263 0.5×	178 0.6×	200 0.8×	255 1.4×	127 0.8×	62	513
C. Behrens Germany	15	750 1.5×	601 1.9×	371 1.5×	326 1.8×	205 1.3×	39	1.0k
A. M. Kondratenko Russia	10	468 1.0×	279 0.9×	150 0.6×	244 1.3×	206 1.3×	58	602
A.N. Skrinsky Russia	14	301 0.6×	141 0.4×	179 0.7×	192 1.0×	237 1.5×	57	598
Haixiao Deng China	13	618 1.3×	461 1.4×	198 0.8×	182 1.0×	232 1.4×	93	750

Countries citing papers authored by N. Sei

Since Specialization

Citations

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

Fields of papers citing papers by N. Sei

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of N. Sei

This figure shows the co-authorship network connecting the top 25 collaborators of N. Sei. A scholar is included among the top collaborators of N. Sei 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 N. Sei. N. Sei is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Sei, N., Heishun Zen, & Hideaki Ohgaki. (2023). Deformation of an electron bunch caused by free-electron lasers. Physica Scripta. 98(2). 25510–25510.

Sei, N. & Toshiharu Takahashi. (2020). First demonstration of coherent resonant backward diffraction radiation for a quasi-monochromatic terahertz-light source. Scientific Reports. 10(1). 7526–7526. 6 indexed citations

Sei, N., Hiroshi Ogawa, & Qika Jia. (2018). Switching of the harmonic order in free-electron lasers by controlling the density modulation of an electron bunch. Journal of Synchrotron Radiation. 25(5). 1317–1322. 1 indexed citations

Sei, N., Hiroshi Ogawa, & Shuichi Okuda. (2017). Electron-bunch lengthening on higher-harmonic oscillations in storage-ring free-electron lasers. Journal of Synchrotron Radiation. 24(5). 912–918. 1 indexed citations

Sei, N. & Toshiharu Takahashi. (2017). First demonstration of coherent Cherenkov radiation matched to circular plane wave. Scientific Reports. 7(1). 17440–17440. 11 indexed citations

Sei, N., Hiroshi Ogawa, & Shuichi Okuda. (2017). Demonstration of narrowband X-ray beam by inverse Compton scattering with stored spontaneous emission. Journal of Applied Physics. 121(2). 4 indexed citations

Sei, N. & Toshiharu Takahashi. (2013). Verification of terahertz-wave spectrophotometry by Compton backscattering of coherent synchrotron radiation. Physics Letters A. 378(3). 303–307. 4 indexed citations

Sei, N., Hiroshi Ogawa, Toshinari Tanaka, et al.. (2012). Observation of intense terahertz-wave coherent synchrotron radiation at LEBRA. Journal of Physics D Applied Physics. 46(4). 45104–45104. 15 indexed citations

Sei, N., Hiroshi Ogawa, & Kawakatsu Yamada. (2011). Lasing of middle-infrared free-election lasers using the storage ring NIJI-IV. Optics Letters. 36(18). 3645–3645. 15 indexed citations

10.

Sei, N., Hiroshi Ogawa, & Kawakatsu Yamada. (2009). Lasing of infrared free-election lasers using the storage ring NIJI-IV. Optics Letters. 34(12). 1843–1843. 17 indexed citations

11.

Kuroda, R., H. Toyokawa, M. Yasumoto, et al.. (2006). SIMULATION STUDY OF COMPACT HARD X-RAY SOURCE VIA LASER COMPTON SCATTERING. 2 indexed citations

12.

Ogawa, Hiroshi, Kaori Watanabe, N. Sei, Kawakatsu Yamada, & M. Yasumoto. (2005). REAL-TIME OBSERVATION OF SURFACE CHEMICAL REACTIONS WITH FEL-INDUCED PHOTOELECTRON EMISSION MICROSCOPY.

13.

Sei, N., Kawakatsu Yamada, & T. Mikado. (2004). Evolution of a Storage Ring Free Electron Laser Micropulse in a Macropulse Zone. Japanese Journal of Applied Physics. 43(2). 577–584. 4 indexed citations

14.

Ogawa, Hiroshi, Ken‐ichi Yamada, N. Sei, M. Yasumoto, & T. Mikado. (2004). Simulation study on the coherent harmonic generation at the NIJI-IV FEL with a hole-coupled resonator. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 528(1-2). 301–304. 1 indexed citations

15.

Yamada, Ken‐ichi, N. Sei, M. Yasumoto, et al.. (2002). Dynamic behavior of the NIJI-IV storage ring free electron laser. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 483(1-2). 162–166. 9 indexed citations

16.

Sei, N., Ken‐ichi Yamada, Hideaki Ohgaki, et al.. (2002). Study of expected performance of the hard X-ray beam for the FEL-X project. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 483(1-2). 429–433. 9 indexed citations

17.

Yamada, Ken‐ichi, N. Sei, Tetsuo Yamazaki, et al.. (1999). Lasing down to the deep UV in the NIJI-IV FEL. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 429(1-3). 159–164. 10 indexed citations

18.

Sei, N., Hideaki Ohgaki, Ken‐ichi Yamada, & Tetsuo Yamazaki. (1997). Beam quality in storage ring NIJI-IV. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 393(1-3). 38–43. 7 indexed citations

19.

Yokoyama, Minoru, M. Kawai, Ken‐ichi Yamada, et al.. (1996). Study of stored current limitation on the storage ring NIJI-IV. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment. 375(1-3). 53–56. 1 indexed citations

20.

Sei, N., Isao Umemura, & Katsuji Yamamoto. (1993). Constraints on the electroweak phase transition in the singlet majoron model. Physics Letters B. 299(3-4). 286–292. 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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