{"created":"2023-06-20T14:52:19.125953+00:00","id":20449,"links":{},"metadata":{"_buckets":{"deposit":"7eafe7ad-667c-43d0-ac96-e553c5c627ca"},"_deposit":{"created_by":1,"id":"20449","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"20449"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00020449","sets":["1543:1778:1789","1887:1891"]},"author_link":["195376","195378","195377","195375","195374","195373"],"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2007-07-25","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"127","bibliographicPageStart":"123","bibliographic_titles":[{"bibliographic_title":"第40回月・惑星シンポジウム"},{"bibliographic_title":"Proceedings of the 40th ISAS Lunar and Planetary Symposium","bibliographic_titleLang":"en"}]}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"We proposed a new scenario for compound chondrule formation in the framework of the shock-wave heating model. We modeled the disruption of molten cm-sized parent dust particle exposed to high-velocity gas flow in order to estimate the efficiency of mutual collisions between small fragments assuming that all of them have the same radius. The collision rate (expected collision frequency per unit time per a fragment) is given by R(sub coll) is approximately equal to sigma(sub coll) x n(sub e) x Delta(v), where sigma(sub coll), n(sub e), and Delta(v) are the cross-section of collision, number density, and velocity dispersion of fragments, respectively. We estimated n(sub e) and Delta(v) in our model and obtained the collision frequency F(sub coll) by integrating R(sub coll) over the time t from t = 0 to t = infinity. The predicted collision frequency was approximately 0.1-1 or more in a typical case, which is about one order of magnitude larger than the observational compound fraction. We also examined the shadow effect, which is the effect that the fragments earlier ejected from the parent particle can be kept away from the ambient gas flow because other particles ejected lately block out the flow from upstream. We found that the shadow effect enhances the collision frequency by a several times.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0063723029","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構宇宙科学研究本部"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"京都大学 大学院理学研究科"},{"subitem_text_value":"東京工業大学 大学院理工学研究科"},{"subitem_text_value":"東京工業大学 大学院理工学研究科"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Kyoto University Graduate School of Science"},{"subitem_text_language":"en","subitem_text_value":"Tokyo Institute of Technology Graduate School of Science and Engineering"},{"subitem_text_language":"en","subitem_text_value":"Tokyo Institute of Technology Graduate School of Science and Engineering"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"三浦, 均"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"保田, 誠司"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"中本, 泰史"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Miura, Hitoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yasuda, Seiji","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nakamoto, Taishi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"太陽星雲","subitem_subject_scheme":"Other"},{"subitem_subject":"複合コンドルール","subitem_subject_scheme":"Other"},{"subitem_subject":"衝突頻度","subitem_subject_scheme":"Other"},{"subitem_subject":"衝撃加熱","subitem_subject_scheme":"Other"},{"subitem_subject":"気体摩擦加熱","subitem_subject_scheme":"Other"},{"subitem_subject":"コンドライト","subitem_subject_scheme":"Other"},{"subitem_subject":"隕石母天体","subitem_subject_scheme":"Other"},{"subitem_subject":"太陽系進化","subitem_subject_scheme":"Other"},{"subitem_subject":"solar nebula","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"compound chondrule","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"collision frequency","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"shock heating","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"gas frictional heating","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"chondrite","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"meteorite parent body","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"solar system evolution","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Compound chondrule formation in shocks: Collision frequency between fragments of disrupted molten dust","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Compound chondrule formation in shocks: Collision frequency between fragments of disrupted molten dust","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["1789","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"20449","relation_version_is_last":true,"title":["Compound chondrule formation in shocks: Collision frequency between fragments of disrupted molten dust"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T03:50:05.094386+00:00"}