{"created":"2023-05-15T12:05:03.056135+00:00","id":9660,"links":{},"metadata":{"_buckets":{"deposit":"aa288e92-f58b-4ebc-a5f3-1bc6182c58e9"},"_deposit":{"created_by":3,"id":"9660","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"9660"},"status":"published"},"_oai":{"id":"oai:iwate-u.repo.nii.ac.jp:00009660","sets":["1515:1516"]},"author_link":["73969","73970"],"item_28_alternative_title_23":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"STUDY OF EXCESS HEAT PRODUCTION MECHANISUM IN DEUTERIUM LOADED SOLID UNDER HIGH ELECTRIC FIELD"}]},"item_28_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1996-03-01","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{}]}]},"item_28_date_6":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2012-02-08"}]},"item_28_description_11":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"科学研究費補助金[一般研究C](課題番号06650313)研究成果報告書","subitem_description_type":"Abstract"}]},"item_28_description_12":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"針対平板電極系を用い、室温2気圧の重水素ガス雰囲気において、重水素を吸蔵させたパラジウム針からグロ-放電による電流を流した。この実験方法はきわめて簡素であるが、電流が針電極先端に集中するため小さい電流で高い電流密度が得られ、ガス密度が高いので電極の表面修飾が不必要であり、電流の脈動が激しく、いわゆる電流のLow-Highモ-ドの繰り返しを自然につくることができるなどの長所を備えている。バラジウム針電極の吸蔵率D/Pdは約0.6程度である。発生する中性子は^3He比例計数管とsingle channel analyzerを含む中性子測定系を用いて計測した。^<252>Cfによる校正から、エネルギ-2MV程度の中性子に対する検出効率はおおまかに1%である。バックグランドの中性子計測数25n/時間程度である。37試行中2回過剰中性子の放出を示す結果が得られた。最大過剰中性子の2,700n/5secはバックグランドの9×10^4倍に相当する。試行終了後に光学顕微鏡によるパラジウム針電極先端を観察した結果、中性子の過剰放出が起きた2つ電極の先端部表面のみが黒い付着物で覆われていることが分かった。X線光電子分光装置(XPS)により調べた結果、顕微鏡観察における黒い付着物は炭素であることが判明した。5年にわたり4,000時間を超えるバックグランド計測中でも計測数の大きな変化は1度もないことから、中性子計測系に現れた過剰計数は,外来の電磁雑音や計測系高電圧部の沿面放電に由来する誤動作によるものとは考え難い。また、electro migrationなどによりバラジウム中の不純物炭素が針電極先端に集まることが検討されたが、いずれも多量の炭素検出を説明できる可能性は極めて低いことが分かった。これらの結果から、重水素の吸蔵率がある値以上の場合に、グロ-放電に伴うμAオ-ダ-の電流により重水素イオンが移動し、針電極先端部のパラジウム表面近くにおいて重水素原子核が関与する核反応が起こったと思われる。この際、まず、トリチウムやヘリウムのような中間生成物が作られ2.45MeVの中性子が発生し、次に、この中間生成物から炭素が作られたと考えられる。","subitem_description_type":"Other"},{"subitem_description":"A neutron measurement system is used to detect 2.45MeV neutrons from the D(d, n)^3He fusion branch, during glow discharge with deuterium loaded palladium point electrode in 2 atm deuterium gas. The efficiency of the detector was measured to be approximately 1% using ^<252>Cf source with an intensity of 2.3* 10^4 neutrons s^<-1>. The average background of neutron flax without test cell is about 25 counts per hour. The deuterion to palladium loading ratio was measured to be about 0.6 at 24 hours after the start of loading.\n\nNo excess count was usually observed, however, a burst of neutron was occasionally detected under the application of a slightly lower voltage than that for flashover. Counting rate significantly higher than the background level was observed in 2 runs out of 37 runs. The observed highest counting rate of 2,700 counts for 5 seconds, is equivalent to 9*10^4 times larger than the background counting rate.\n\nAfter each run, the tip of point electrode was observed using microscope. It is found that the tip of neutron bursting electrode was covered with a black deposit. To the contrary, no remarkable change in the tip was observed for other electrodes. Furthermore, XPS investigation revealed that the black deposit was carbon. The origin of the carbon could not be due to such as electro migratio in palladium point electrode.\n\nIt seems that the current density of the order 0.1A・cm^<-2> due to DC high-voltage application would be responsible for the transition of deuterons from octahedral sites to other sites near surface in palladium. It would be that a nuclear fusion from deuterium to such as ^4He, accompanied by neutron emission, took place during the transition. It is plausible that a next fusion from three 4He into a carbon atom folows.","subitem_description_type":"Other"}]},"item_28_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{}],"names":[{"name":"YAMADA, Hiroshi"}]}]},"item_28_text_4":{"attribute_name":"著者(機関)","attribute_value_mlt":[{"subitem_text_value":"岩手大学工学部"}]},"item_28_version_type_27":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"山田, 弘"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-11-14"}],"displaytype":"detail","filename":"kaken06650313.pdf","filesize":[{"value":"1.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"kaken06650313.pdf","url":"https://iwate-u.repo.nii.ac.jp/record/9660/files/kaken06650313.pdf"},"version_id":"0d96b6f9-cb11-4e70-a87e-68d949873a14"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Deuterium","subitem_subject_scheme":"Other"},{"subitem_subject":"Excess heat","subitem_subject_scheme":"Other"},{"subitem_subject":"Helium 4","subitem_subject_scheme":"Other"},{"subitem_subject":"High voltage application","subitem_subject_scheme":"Other"},{"subitem_subject":"Hydrogen loading","subitem_subject_scheme":"Other"},{"subitem_subject":"Neutron","subitem_subject_scheme":"Other"},{"subitem_subject":"Palladium","subitem_subject_scheme":"Other"},{"subitem_subject":"Tungsten bronze","subitem_subject_scheme":"Other"},{"subitem_subject":"タングステンブロンズ","subitem_subject_scheme":"Other"},{"subitem_subject":"パラジウム","subitem_subject_scheme":"Other"},{"subitem_subject":"ヘリウム4","subitem_subject_scheme":"Other"},{"subitem_subject":"中性子","subitem_subject_scheme":"Other"},{"subitem_subject":"余剰熱","subitem_subject_scheme":"Other"},{"subitem_subject":"水素吸蔵","subitem_subject_scheme":"Other"},{"subitem_subject":"重水素","subitem_subject_scheme":"Other"},{"subitem_subject":"高電界印加","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"高電界印加法による重水素吸蔵固体中の余剰熱の発生機構に関する研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"高電界印加法による重水素吸蔵固体中の余剰熱の発生機構に関する研究"}]},"item_type_id":"28","owner":"3","path":["1516"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-02-08"},"publish_date":"2012-02-08","publish_status":"0","recid":"9660","relation_version_is_last":true,"title":["高電界印加法による重水素吸蔵固体中の余剰熱の発生機構に関する研究"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-16T11:00:31.961147+00:00"}