{"created":"2021-03-01T06:39:38.593109+00:00","id":31235,"links":{},"metadata":{"_buckets":{"deposit":"54341064-3ac4-4319-9cb5-c4c0473052d1"},"_deposit":{"id":"31235","owners":[],"pid":{"revision_id":0,"type":"depid","value":"31235"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:00031235","sets":["320:2524:2544:2621"]},"author_link":["103140","103141"],"item_1615768549627":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_9_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1968-03-31","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"269","bibliographicPageStart":"250","bibliographicVolumeNumber":"19","bibliographic_titles":[{"bibliographic_title":"Memoirs of the Faculty of Engineering, Nagoya University","bibliographic_titleLang":"en"}]}]},"item_9_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The electron densities from 10^13 to 10^17 cm^-3 in plasmas produced by electromagnetically driven, propagating or reflected shock waves are measured by a microwave reflection method. The Mach number of the shock waves is varied from 9 to 25 in gases at pressures from 0.4 to 2.0 mmHg. The gases used are argon, air, helium and hydrogen. A 35-Gc microwave reflection probe is inserted into a T-type shock tube perpendicular to its axis, or is placed at the tube end parallel with the axis. Even though some perturbation on the gas flow by the inserted probe is expected, surprisingly good agreements are found between the microwave and spectroscopic measurements. Moreover, no difference is observed between the electron densities measured from the spectral line broadening for the cases with and without the inserted probe. This means that the electron densities are not much disturbed by the inserted probe. Such measured electron densities are compared with theoretically predicted values which are calculated from the Rankine-Hugoniot and Saha equations. For Mach numbers higher than 20, the maximum values of the electron densities measured behind the shock fronts agree well with the theoretically predicted values. For low Mach numbers, however, the measured maximum electron densities are lower than the theoretically predicted values. The discrepancy between the measured and theoretical densities, which increases with decreasing Mach number and initial gas pressure, may be due to the long relaxation time and an insufficient thermal equilibrium behind the shock front. The measured build-up time of the electron density behind the shock front also increases with decreasing Mach number and initial gas pressure.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_9_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.18999/memfenu.19.2.250","subitem_identifier_reg_type":"JaLC"}]},"item_9_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Faculty of Engineering, Nagoya University","subitem_publisher_language":"en"}]},"item_9_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_9_source_id_7":{"attribute_name":"ISSN（print）","attribute_value_mlt":[{"subitem_source_identifier":"0027-7657","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Funahashi, Akimasa","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"103140","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Takeda, Susumu","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"103141","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-02-04"}],"displaytype":"detail","filename":"19-2-05.pdf","filesize":[{"value":"1.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"19-2-05.pdf","objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/31235/files/19-2-05.pdf"},"version_id":"ff4f7b9a-ce1e-4faa-9189-d3b8258b1ac2"}]},"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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Microwave reflection measurements of electron densities in electromagnetically driven shock produced plasmas","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Microwave reflection measurements of electron densities in electromagnetically driven shock produced plasmas","subitem_title_language":"en"}]},"item_type_id":"9","owner":"1","path":["2621"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2021-02-04"},"publish_date":"2021-02-04","publish_status":"0","recid":"31235","relation_version_is_last":true,"title":["Microwave reflection measurements of electron densities in electromagnetically driven shock produced plasmas"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-01-16T04:31:21.378182+00:00"}