@misc{oai:repo.qst.go.jp:00066553,
 author = {ピロジコフ, アレキサンダー and Ogura, Koichi and Timur, Esirkepov and A., Pikuz T. and Ya., Faenov A. and Hayashi, Yukio and Kotaki, Hideyuki and N., Ragozin E. and Neely, D. and Kiriyama, Hiromitsu and Kevin, Koga James and Fukuda, Yuuji and Sagisaka, Akito and Nishikino, Masaharu and Imazono, Takashi and Hasegawa, Noboru and Kawachi, Tetsuya and Daido, Hiroyuki and Kato, Yoshiaki and Bulanov, Sergey and Kondo, Kiminori and Kando, Masaki and ピロジコフ アレキサンダー and 小倉 浩一 and エシロケポフ ティムル and 林 由紀雄 and 小瀧 秀行 and 桐山 博光 and コーガ ジェームズ and 福田 祐仁 and 匂坂 明人 and 錦野 将元 and 今園 孝志 and 長谷川 登 and 河内 哲哉 and 大道 博行 and 加藤 義章 and ブラノフ セルゲイ and 近藤 公伯 and 神門 正城},
 month = {Mar},
 note = {High-order harmonics from relativistic singularities are emitted when a multi-terawatt femtosecond laser irradiates a gas jet target [1, 2]. The laser pulse pushes electrons producing an electron-free cavity and generates a bow wave [3]; the singularities are produced at the joining of the cavity wall and the bow wave and represent point-like coherent x-ray emitters. The emitted spectra generally consist of high-order harmonics of optical frequency. However, the spectra often exhibit additional features such as modulations with large period (up to 10s of eV) and presence of several periods in a single spectrum. Here we report on analysis of experimental spectra with the emphasis on dependence on laser and plasma parameters, and discuss possible implications.
This work was supported by JSPS KAKENHI # JP 25287103, JP 25390135, and JP 26707031., JPS Spring Annual Meeting},
 title = {Analysis of spectra of high-order harmonics from relativistic singularities},
 year = {2017}
}