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The efficiency, η, is defined as the increase in the internal core energy divided by the energy of the heating laser. Six beams (output of 1.6 kJ) from the GEKKO XII (GXII) green laser system at the Institute of Laser Engineering (ILE), Osaka University were applied to implode a spherical deuterated polystyrene (CD) shell target to form a dense core. The DD-reacted protons and the core x-ray emissions showed a core density of 2.8 ± 0.7 g cm−3, or 2.6 times the solid density. Furthermore, DD-reacted thermal neutrons were utilized to estimate the core temperature between 600 and 750 eV. Thereafter, the core was directly heated by a laser for fast-ignition experiments (LFEX, an extremely energetic ultrashort pulse laser) at ILE with its axis lying along or perpendicular to the GXII bundle axis, respectively. The former and latter laser configurations were termed \u0027axial\u0027 and \u0027transverse modes\u0027, respectively. 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Direct fast heating efficiency of a counter-imploded core plasma employing a laser for fast ignition experiments (LFEX)
http://hdl.handle.net/10655/00013463
http://hdl.handle.net/10655/000134633d15547f-848b-4e26-a851-a6f04a4e5f33
名前 / ファイル | ライセンス | アクション |
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13559_Nucl.Fusion (2.6 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-08-26 | |||||
タイトル | ||||||
タイトル | Direct fast heating efficiency of a counter-imploded core plasma employing a laser for fast ignition experiments (LFEX) | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | counter implosion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | fast ignition | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | direct heating | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | heating efficiency | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
KITAGAWA, Yoneyoshi
× KITAGAWA, Yoneyoshi× MORI, Yoshitaka× ISHII, Katsuhiro× HANAYAMA, Ryohei× OKIHARA, Shinichiro× ARIKAWA, Yasunobu× ABE, Yuki× MIURA, Eisuke× OZAKI, Tetsuo× KOMEDA, Osamu× SUTO, Hiroyuki× UMETANI, Yusuke× SUNAHARA, Atsushi× JOHZAKI, Tomoyuki× SAKAGAMI, Hitoshi× IWAMOTO, Akifumi× SENTOKU, Yasuhiko× NAKAJIMA, Nozomi× SAKATA, Shohei× MATSUO, Kazuki× MIRFAYZI, Reza S.× KAWANAKA, Junji× FUJIOKA, Shinsuke× TSUBAKIMOTO, Koji× SHIGEMORI, Keisuke× YAMANOI, Kohei× YOGO, Akifumi× NAKAO, Ayami× ASANO, Masatada× SHIRAGA, Hiroyuki× MOTOHIRO, Tomoyoshi× HIOKI, Tatsumi× AZUMA, Hirozumi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Fast heating efficiency when a pre-imploded core is directly heated with an ultraintense laser (heating laser) was investigated. 'Direct heating' means that a heating laser hits a pre-imploded core without applying either a laser guiding cone or an external field. The efficiency, η, is defined as the increase in the internal core energy divided by the energy of the heating laser. Six beams (output of 1.6 kJ) from the GEKKO XII (GXII) green laser system at the Institute of Laser Engineering (ILE), Osaka University were applied to implode a spherical deuterated polystyrene (CD) shell target to form a dense core. The DD-reacted protons and the core x-ray emissions showed a core density of 2.8 ± 0.7 g cm−3, or 2.6 times the solid density. Furthermore, DD-reacted thermal neutrons were utilized to estimate the core temperature between 600 and 750 eV. Thereafter, the core was directly heated by a laser for fast-ignition experiments (LFEX, an extremely energetic ultrashort pulse laser) at ILE with its axis lying along or perpendicular to the GXII bundle axis, respectively. The former and latter laser configurations were termed 'axial' and 'transverse modes', respectively. The η was estimated from three independent methods: (1) the core x-ray emission, (2) the thermal neutron yield, and (3) the runaway hot electron spectra. For the axial mode, 0.8%< η <2.1% at low power (low LFEX energy) and 0.4%< η <2.5% at high power (high LFEX energy). For the transverse mode, 2.6%< η <7% at low power and 1.5%< η <7.7% at high power. Their efficiencies were compared with that in the uniform implosion mode using 12 GXII beams, 6% < η <12%, which appeared near to the η for the transverse mode, except that the error bar is very large. | |||||
書誌情報 |
Nuclear Fusion 巻 62, 号 9, p. 096013, 発行日 2022-08-05 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
出版者 | ||||||
出版者 | International Atomic Energy Agency | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0029-5515 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00759871 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ac7966 | |||||
権利 | ||||||
権利情報 | © EURATOM 2022 | |||||
権利 | ||||||
権利情報 | Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. | |||||
権利 | ||||||
権利情報 | Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. | |||||
情報源 | ||||||
関連名称 | Yoneyoshi Kitagawa et al 2022 Nucl. Fusion 62 096013 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/ac7966 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
NAIS | ||||||
13559 |