ログイン
言語:

WEKO3

  • トップ
  • ランキング
To
lat lon distance
To

Field does not validate



インデックスリンク

インデックスツリー

メールアドレスを入力してください。

WEKO

One fine body…

WEKO

One fine body…

アイテム

{"_buckets": {"deposit": "34e58107-f98b-4065-8461-63b111ea356e"}, "_deposit": {"id": "2001768", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2001768"}, "status": "published"}, "_oai": {"id": "oai:nagoya.repo.nii.ac.jp:02001768", "sets": ["2651"]}, "author_link": [], "control_number": "2001768", "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": "1958-02-15", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "240", "bibliographicPageStart": "201", "bibliographicVolumeNumber": "9", "bibliographic_titles": [{"bibliographic_title": "Memoirs of the Faculty of Engineering, Nagoya University", "bibliographic_titleLang": "en"}]}]}, "item_9_description_4": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "In the initial stage of spark discharge, space charge field is built up by the ionization by collisions of casual electrons in the atmosphere. Space charge field for an impulse spark is in a faint bluish filamentary form, but space charge for D.C. spark is diffused over the whole space between the spark gap. It is important to note that the space charge field of positive ions is prepared first, and procedure for building up of space charge field within the gap as well as ion density and its distribution within the gap must be considered. As the voltage rises, electron avalanche from cathode advances toward the anode along the space charge field. When the electron avalanche from cathode continuously propagates in the space charge field and reaches the anode, the spark breakdown occurs. At the voltage lower than the breakdown value, the electron avalanche from cathode does not continue to the anode ; it diffuses in the gap and acts as if it were a free electron. Hence, casual electrons and ions within the gap increase with the rise of voltage. If a positive electrode is placed in this space charge field, and its potential becomes high enough to accelerate a casual or free electron within the gap to the positive point and is able to ionize gas molecules near it, a brightly luminous canal is built up at the positive electrode which proceeds toward cathode as voltage is raised. That is, the positive canal consists of positive streamer produced previously and electron avalanche due to free electron also previously produced within the gap, as stated above. The canal becomes a luminous channel and changes the appearance from an impulse spark to D.C. spark. The degree of brightness depends on the electron density within the channel. Mobility of positive ion is very low and it plays the double role of building up a space charge field and a plasma state using electron of electron avalanche from cathode. If electron density in the plasma amounts to about 108 electrons per cm3, the plasma becomes a conductive path where the crossing of two electrodes means that a highly ionized channel has been formed joining two electrodes. Creation of this channel constitutes spark breakdown. The spark breakdown condition can be written (Emin+Er)∙e∙λ≧Vj∙e where, Emin ; minimum field strength of applied field in the spark gap, Er ; space charge field strength at tip of an electron avalanche, e ; electron charge, λ ; mean free path of electron in gas, Vj ; ionization potential of gas molecule.", "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.9.2.201", "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_source_id_7": {"attribute_name": "収録物識別子", "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": "SHINOHARA, Ukichi", "creatorNameLang": "en"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "date": [{"dateType": "Available", "dateValue": "2021-12-22"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "9-2-01.pdf", "filesize": [{"value": "7.9 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "application/pdf", "size": 7900000.0, "url": {"objectType": "fulltext", "url": "https://nagoya.repo.nii.ac.jp/record/2001768/files/9-2-01.pdf"}, "version_id": "98e4f398-ea80-4fe9-95ea-ec33efae020d"}]}, "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": "Experimental studies on the mechanism of electric spark discharge", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Experimental studies on the mechanism of electric spark discharge", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["2651"], "permalink_uri": "https://doi.org/10.18999/memfenu.9.2.201", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2021-12-22"}, "publish_date": "2021-12-22", "publish_status": "0", "recid": "2001768", "relation": {}, "relation_version_is_last": true, "title": ["Experimental studies on the mechanism of electric spark discharge"], "weko_shared_id": -1}
  1. B200 工学部/工学研究科
  2. B200b 紀要
  3. Memoirs of the Faculty of Engineering, Nagoya University
  4. 9(2)

Experimental studies on the mechanism of electric spark discharge

https://doi.org/10.18999/memfenu.9.2.201
https://doi.org/10.18999/memfenu.9.2.201
567d611b-51bf-4a83-aeb2-096115197b72
名前 / ファイル ライセンス アクション
9-2-01.pdf 9-2-01.pdf (7.9 MB)
Item type itemtype_ver1(1)
公開日 2021-12-22
タイトル
タイトル Experimental studies on the mechanism of electric spark discharge
言語 en
著者 SHINOHARA, Ukichi

× SHINOHARA, Ukichi

en SHINOHARA, Ukichi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述 In the initial stage of spark discharge, space charge field is built up by the ionization by collisions of casual electrons in the atmosphere. Space charge field for an impulse spark is in a faint bluish filamentary form, but space charge for D.C. spark is diffused over the whole space between the spark gap. It is important to note that the space charge field of positive ions is prepared first, and procedure for building up of space charge field within the gap as well as ion density and its distribution within the gap must be considered. As the voltage rises, electron avalanche from cathode advances toward the anode along the space charge field. When the electron avalanche from cathode continuously propagates in the space charge field and reaches the anode, the spark breakdown occurs. At the voltage lower than the breakdown value, the electron avalanche from cathode does not continue to the anode ; it diffuses in the gap and acts as if it were a free electron. Hence, casual electrons and ions within the gap increase with the rise of voltage. If a positive electrode is placed in this space charge field, and its potential becomes high enough to accelerate a casual or free electron within the gap to the positive point and is able to ionize gas molecules near it, a brightly luminous canal is built up at the positive electrode which proceeds toward cathode as voltage is raised. That is, the positive canal consists of positive streamer produced previously and electron avalanche due to free electron also previously produced within the gap, as stated above. The canal becomes a luminous channel and changes the appearance from an impulse spark to D.C. spark. The degree of brightness depends on the electron density within the channel. Mobility of positive ion is very low and it plays the double role of building up a space charge field and a plasma state using electron of electron avalanche from cathode. If electron density in the plasma amounts to about 108 electrons per cm3, the plasma becomes a conductive path where the crossing of two electrodes means that a highly ionized channel has been formed joining two electrodes. Creation of this channel constitutes spark breakdown. The spark breakdown condition can be written (Emin+Er)∙e∙λ≧Vj∙e where, Emin ; minimum field strength of applied field in the spark gap, Er ; space charge field strength at tip of an electron avalanche, e ; electron charge, λ ; mean free path of electron in gas, Vj ; ionization potential of gas molecule.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Faculty of Engineering, Nagoya University
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
ID登録
ID登録 10.18999/memfenu.9.2.201
ID登録タイプ JaLC
収録物識別子
収録物識別子タイプ PISSN
収録物識別子 0027-7657
書誌情報 en : Memoirs of the Faculty of Engineering, Nagoya University

巻 9, 号 2, p. 201-240, 発行日 1958-02-15
戻る
0
views
See details
Views

Versions

Ver.1 2021-12-22 05:38:00.360544
Show All versions

Share

Mendeley Twitter Facebook Print Addthis

Cite as

エクスポート

OAI-PMH
  • OAI-PMH JPCOAR
  • OAI-PMH DublinCore
  • OAI-PMH DDI
Other Formats
  • JSON
  • BIBTEX

Confirm


Powered by WEKO3


Powered by WEKO3