{"created":"2021-03-01T06:16:36.752581+00:00","id":9822,"links":{},"metadata":{"_buckets":{"deposit":"adf495c4-6fdf-4497-b70f-67906ff51d00"},"_deposit":{"id":"9822","owners":[],"pid":{"revision_id":0,"type":"depid","value":"9822"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:00009822","sets":["336:635:636"]},"author_link":["29568","29569"],"item_12_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"成層圏における亜酸化窒素とオゾンの光化学","subitem_alternative_title_language":"ja"}]},"item_12_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005-03-25","bibliographicIssueDateType":"Issued"}}]},"item_12_date_granted_64":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2005-03-25"}]},"item_12_degree_grantor_62":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_language":"ja","subitem_degreegrantor_name":"名古屋大学"},{"subitem_degreegrantor_language":"en","subitem_degreegrantor_name":"Nagoya University"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"13901","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_12_degree_name_61":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士(理学)","subitem_degreename_language":"ja"}]},"item_12_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In atmospheric chemistry, trace chemical compounds play important roles. Though concentrations of the compounds are very low(less than 1%), the compounds are key species in the atmospheric chemical system. Model calculations have been carried out to estimate future  prospects of concentration changes of the chemical species in the atmosphere. Importance of the calculations is increasing. Most of the models used in the calculations adopt the reaction rate constants and the products information recommended by NASA/JPL. The recommended values are obtained from several experimental results. The recommended values have uncertainties due to uncertainties of the experimental results. Improvements of accuracy and precision of the recommended values can cause better estimations of the future prospects by model calculations. In the viewpoint of ozone destruction in the stratosphere, O(1D) chemistry is significantly important. O(1D)atoms react with H_2O to produce OH radicals with N_2O to produce NO radicals. These reactions are known to be main stratospheric HO_x and NO_x production sources.  The concentration of O_3 in the stratosphere is greatly affected by O(1D) chemistry.  In this thesis reactions of N_2O,O_3, and CF_3O_2 are studied to have better knowledge of the reactions. The reaction of N_2O with O(1D) in the stratosphere is a major source of stratospheric NO_x. There can be reaction processes which produce O(3P) through the reaction of N_2O + O(1D). NASA/JPL has no recommended branching ratio of this channel due to lack of measurements of this branching ratio. If the N_2O + O(3P) channel exists, the branching ratio of NO production channel recommended by NASA/JPL can be reduced.  It means that model calculations may overestimate the NO production in the reaction of N_2O+ O(1D) in the stratosphere. The O_3 photolysis in the stratosphere produces much of stratospheric O(1D), which plays a key role in the stratospheric chemistry. Quantum yields of O(1D) in the photolysis of O_3 are important and change with the photolysis wavelength. Though UV light around 200nm reach stratosphere, there has been few reports of O(1D) quantum yield measurements of 193-225 nm in the O_3 photolysis. CF_3O_2 is an intermediate compound in the oxidization of CFC(Chlorofluorocarbons) substitutes, such as HFC_s(hydrofluorocarbons) and HCFC_s(Hydrochlorofluorocarbons). Due to increase of usage of alternate CFC_s, atmospheric loss processes of CF_3O_2 are considered to be more important. In chapter 3, the O(3P) atom produced in the 193nm photolysis of N_2O has been measured by a technique of vacuum ultraviolet laser-induced fluorescence spectroscopy around 130nm. The quantum yield value of the O(3P) atoms produced directly in the photolysis of N_2Oat 193nm at room temperature has been determined to be 0.005±0.002. The O(3P) atom formation process in the reaction of O(1D)+N_2O is also studied and the channel branching ratio of O(3P)+ N_2O has been determined to be 0.04±0.02 among the product channels, 2NO, N_2+O_2 and O(3P)+ N_2O. Phtodissociation  processes of N_2O at 193nm and reaction processes of O(1D) +N_2O system have been discussed based on the experimental results. Due to importance of the O(1D)+ N_2O reaction in the stratosphere, impact of the experimental result of O(3P) formation from the O(1D)+ N_2O reaction on the stratospheric chemistry is also studied by one-dimensional atmospheric model calculations.In chapter 4, the quantum yield values for O(1D) production from the phtodissociation reaction of O_3 between 193 and 225 nm at 298±2K are reported. The O(1D) photofragments have been detected directly using a technique of vacuum ultraviolet laser-induced fluorescence spectroscopy at 115.22nm. It has been found that the O(1D) quantum yield values decreases monotonically from 0.898±0.123(225nm) to 0.476±0.026(193nm) as the photolysis wavelength becomes shorter.  Photodissociation processes of O_3 around 210nm and its atmospheric implications have been discussed. In chapter 5, FTIR smog chamber techniques have been used to show that reaction of CF_3O_2 radicals with NO proceeds via two channels giving either CF_3O+NO_2(5.5a) or CF_3ONO_2(5.5b) as products.  In 700 Torr of N_2/O_2 diluent at 296K the branching ratio for CF_3ONO_2 formation is K_5.5b/(K_5.5a+K_5.5b)=(1.67±0.27)×10^{-2}. The CF_3ONO_2 forming channel is in the fall off regime at pressures of 50 Torr and below, while for pressures above 100 Torr the reaction approaches the high pressure limit.  This behavior is consistent with the predictions of recent Master Equation calculations [Chem. Rev. ,103, 4577, 2003]. The results in this thesis show that modifications of NASA/JPL recommended values of NO production branching ratio in the N_2+O(1D) reaction of O(1D)production quantum yield of O_3 photolysis at 193-225 nm should be made.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_12_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"名古屋大学博士学位論文 学位の種類:博士(理学) (課程) 学位授与年月日:平成17年3月25日","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_12_dissertation_number_65":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第6479号"}]},"item_12_identifier_60":{"attribute_name":"URI","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/2237/11623"}]},"item_12_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_12_text_14":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_text_value":"application/pdf"}]},"item_12_text_63":{"attribute_name":"学位授与年度","attribute_value_mlt":[{"subitem_text_value":"2004"}]},"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":"西田, 哲","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"29568","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nishida, Satoshi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"29569","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":"2018-02-20"}],"displaytype":"detail","filename":"ko6479.pdf","filesize":[{"value":"4.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"ko6479.pdf","objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/9822/files/ko6479.pdf"},"version_id":"d09eab95-2711-47ca-97a4-63491dd8799b"}]},"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":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Photochemistry of nitrous oxide and ozone in the stratosphere","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Photochemistry of nitrous oxide and ozone in the stratosphere","subitem_title_language":"en"}]},"item_type_id":"12","owner":"1","path":["636"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2009-04-28"},"publish_date":"2009-04-28","publish_status":"0","recid":"9822","relation_version_is_last":true,"title":["Photochemistry of nitrous oxide and ozone in the stratosphere"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-01-16T03:55:35.089229+00:00"}