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BISER: Burst Intensification by Singularity Emitting Radiation
https://repo.qst.go.jp/records/66554
https://repo.qst.go.jp/records/66554c4397370-81c6-41b8-94c5-1eb07d196eb4
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-12-20 | |||||
| タイトル | ||||||
| タイトル | BISER: Burst Intensification by Singularity Emitting Radiation | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
ピロジコフ, アレキサンダー
× ピロジコフ, アレキサンダー× エシロケポフ, ティムル× A., Pikuz Tatiana× Ya., Faenov Anatoly× 小倉, 浩一× 林, 由紀雄× 小瀧, 秀行× N., Ragozin Eugene× Neely, David× 桐山, 博光× コーガ, ジェームズ× 福田, 祐仁× 匂坂, 明人× 錦野, 将元× 今園, 孝志× 長谷川, 登× 河内, 哲哉× ボルトン, ポール× 大道, 博行× 加藤, 義章× 近藤, 公伯× ブラノフ, セルゲイ× 神門, 正城× ピロジコフ アレキサンダー× エシロケポフ ティムル× 小倉 浩一× 林 由紀雄× 小瀧 秀行× 桐山 博光× コーガ ジェームズ× 福田 祐仁× 匂坂 明人× 錦野 将元× 今園 孝志× 長谷川 登× 河内 哲哉× ボルトン ポール× 大道 博行× 加藤 義章× 近藤 公伯× ブラノフ セルゲイ× 神門 正城 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In our experiments and simulations [1, 2] we discovered a bright source of high-order harmonics and revealed the mechanism of their generation in relativistic plasma driven by multi-terawatt femtosecond lasers focused onto gas jet targets with typical electron densities of ~10^19 cm^-3. The harmonics extended up to the 'water window'; the energy within the 60 to 100 eV bandwidth was up to 100 nJ per shot. Simulations showed that the emission consisted of several attosecond pulses. In our subsequent experiments we confirmed the predictions and observed the soft x-ray emission originated from point-like sources. \nHere we generalize this mechanism and introduce the concept of BISER, Burst Intensification by Singularity Emitting Radiation. In this concept, we consider an emitting medium with multi-stream flows. Elementary components participating in such flows eventually form structurally stable density singularities explained by catastrophe theory. The wave emission from such singularities can be coherent due to tight localization of elementary emitters. In addition, if the singularities move with relativistic speed towards an observer, the apparent frequency increases and emission becomes more intense and directional. In our previous work the emitting medium was relativistic plasma, the elementary components were electrons, and the emitting waves were high-frequency electromagnetic waves, i.e. soft x-rays. In general, BISER can be applicable to any type of traveling waves, not necessarily electromagnetic. \n[1] A. S. Pirozhkov, M. Kando, T. Zh. Esirkepov, et al., "Soft-X-Ray Harmonic Comb from Relativistic Electron Spikes," Phys. Rev. Lett. 108, 135004-5 (2012). [2] A. S. Pirozhkov, M. Kando, T. Zh. Esirkepov, et al., "High order harmonics from relativistic electron spikes," New J. Phys. 16, 093003-30 (2014). |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The Optics & Photonics International Congress OPIC-2017, International Conference on High-Energy Density Sciences HEDS-2017 | |||||
| 発表年月日 | ||||||
| 日付 | 2017-04-21 | |||||
| 日付タイプ | Issued | |||||
