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中高エネルギー核破砕及び核分裂の放射化学的研究
https://doi.org/10.24517/00066212
https://doi.org/10.24517/0006621236170ba1-56bc-4da5-b8dc-902a5285561e
名前 / ファイル | ライセンス | アクション |
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SC-PR-SAKAMOTO-K-kaken 1999-3p.pdf (107.7 kB)
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Item type | 報告書 / Research Paper(1) | |||||
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公開日 | 2022-06-09 | |||||
タイトル | ||||||
タイトル | 中高エネルギー核破砕及び核分裂の放射化学的研究 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Radiochemical Study of Nuclear Spallation and Fission at Intermediate Energies | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
ID登録 | ||||||
ID登録 | 10.24517/00066212 | |||||
ID登録タイプ | JaLC | |||||
著者 |
坂本, 浩
× 坂本, 浩 |
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著者別表示 |
Sakamoto, Koh
× Sakamoto, Koh |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学理学部 | |||||
書誌情報 |
平成8(1996)年度 科学研究費補助金 基盤研究(A) 研究成果報告書概要 en : 1996 Fiscal Year Final Research Report Summary 巻 1995 – 1996, p. 3p., 発行日 1999-03-15 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 本研究は、国内既設の種々の加速器を用い,最も単純な光子から複雑な重イオンにわたる中高エネルギー粒子による核破砕(s)・核分裂(f)・フラグメンテーション(F)を化学の手法で総合的に調べることであった。実質1年半の期間であったが,各分担者において,相互に,あるいは他の協力者と共に初期の成果を挙げてきた。年度末(3月3日)に開催の総合報告書によれば,先づ,坂本,藤原,柴田は東大ESと東北大linaccからの最大エネルギーE_o=60-1000MeVの制動放射線照射により^<27>Al〜^<209>Biにわたる22種の標的について,s,f,F及びπ^±中間子放出反応を調べた。特に^<197>Auの光核分裂片と^<65>Cuのs生成核の反跳測定を行い,動力学的情報を得た。桝本,大槻は300MeV-linacの250cm遮蔽コンクリートに蓄積のs生成核の方向と深さ分布を,三頭は^<237>Npの光核分裂と^<197>Au(γ,xn)による制動放射スペクトルの検証を行った。関根は同linaccと東北大サイクロトロン及び立教大原子炉を用いて^<51>V,^<52,50>Crからの^<51>Crと^<197>Auからの^<196>Auと^<198>Auを例に反跳エネルギー測定や有用標識化合物の反跳合成を研究した。篠原はHIMACからの3.0-4.8GeV^<12>Cと12-28GeV^<40>Arを用いてAu,Cu及びNbのs断面積と反跳飛跡を調べ、理研での運動量移行の結果と照合した。また、浜島らと協力して高エ研PSからのπ^-ビームを用いるパイ中間子原子の化学を進行した。工藤は東北大サイクロで^<238>Uと^<232>Thの陽子誘起のfを調べ,分裂時での角運動量移行からf過程の知見を深めた。今村,小林,永井は長寿命核の^<10>Be,^<14>C,^<26>Al,^<36>ClのAMS測定を行い、坂本,柴田はこれを用いて光Fの研究を開始できた。また,今村,柴田は^<14>N,^<16>O,^<39>K,^<40>Ca,^<63>Cuの陽子及び中性子誘起反応で生成する^<10>Beの励起関数測定を調べた。さらに三頭は超ウラン核種(^<242>Cm,^<238>Pu等)のJMTR中性子反応による製造とそれらの化学研究を行った。 以上の結果は既報並びに準備中の論文で詳述・公表されるが,過去の蓄積に加えて本研究より新たな発展・飛躍の方向を見出すことができた。 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Radiochemical studies of various aspects of nuclear reactions such as spallation, fission and fragmentation have been performed at low to high energies by using photons, neutrons, protons, and heavy ions from available accelerators in Japan, and discussed together for reaction mechanism and their possible applications. Photopion reactions photospallation, photofission and photofragmentation of 22 targets ranging from ^<27>Al to ^<201>Bi at 60-1000 MeV were extensively studied by Sakamoto, Fujiwara and Shibata. Recoil measurements of Cu-spallation and Au-fission were included. Masumoto and Ohtsuki measured the depth and angular profiles of spallation products in a 250 cm concrete shields for Tohoku Univ.e-linac. This accelerator was used by Sakamoto group and Mitsugashira who reported studies of photofission of ^<237>Np and production of ^<242>Cm and ^<238>Pu in a high-flux reactor JMTR.Recoil range measurement was performed by Sekine, in which a new thin foil method was developed. He also studied recoil synthesis of labelled compounds by (n, g) and (g, n) reactions. Heavy ion-induced spallation upto GeV energies was extensivly studied by Shinohara who also continued an important study of pi-mesic atom chemistry at KEK PS.Momentum transfer in nuclear processes is a very important information, and investigated in heavy-ion-induced reactions by Shinohara and also in proton-induced fission of^<238>U and ^<232>Th by Kudo. Neutron- and Proton- induced reactions producing light nuclei like ^<7,10>Be at several tens of MeV are of vital importance in many applications, and several results of excitation functions were reported by Imamura and Shibata. An extremely sensitive measurement of long-lived radionuclides has been established by Kobayashi, Nagai and Imamura, and successfully applied to some of the above-mentioned reaction studies. Combined discussions were performed by exchanging information obtained during the course of the present project, and our prospects for further developments in this field have been exploited. |
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内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 研究課題/領域番号:07304077, 研究期間(年度):1995 – 1996 | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 出典:研究課題「中高エネルギー核破砕及び核分裂の放射化学的研究」課題番号07304077 (KAKEN:科学研究費助成事業データベース(国立情報学研究所)) (https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-07304077/073040771996kenkyu_seika_hokoku_gaiyo/)を加工して作成 |
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著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://kaken.nii.ac.jp/search/?qm=10013377 | |||||
関連名称 | https://kaken.nii.ac.jp/search/?qm=10013377 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07304077/ | |||||
関連名称 | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07304077/ | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-07304077/073040771996kenkyu_seika_hokoku_gaiyo/ | |||||
関連名称 | https://kaken.nii.ac.jp/ja/report/KAKENHI-PROJECT-07304077/073040771996kenkyu_seika_hokoku_gaiyo/ |