{"created":"2023-05-15T14:35:45.235281+00:00","id":45992,"links":{},"metadata":{"_buckets":{"deposit":"59171cc0-9b03-4007-ac5a-84e2859e03d3"},"_deposit":{"created_by":1,"id":"45992","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"45992"},"status":"published"},"_oai":{"id":"oai:repo.qst.go.jp:00045992","sets":["1"]},"author_link":["457683","457686","457687","457685","457682","457684"],"item_8_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"11","bibliographicPageStart":"6","bibliographicVolumeNumber":"631","bibliographic_titles":[{"bibliographic_title":"Nuclear Instruments & Methods in Physics Research Section A"}]}]},"item_8_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"One approach for alpha-particle radiobiological experiments is to use solid-state nuclear track detectors (SSNTDs) as support substrates to record the -particle hit positions on the targets. To facilitate accurate characterization of the hit positions as well as the incident alpha-particle energies, micro-collimators are required in these experiments to restrict the incident  particles to those with small deviations from normal incidence with respect to the collimator. In the present paper, we fabricated micro-collimators which restricted alpha-particles to those with deviations as low as 12o. Specially etched polyallyldiglycol carbonate (PADC) films, which are a kind of SSNTD, with a thickness 70 µm were prepared from commercially available PADC films. These were then irradiated by 4.83 MeV/n oxygen ions generated from the heavy-ion medical accelerator in Chiba (HIMAC), Japan. The irradiated films were chemically etched for at least 2.7 h to achieve etched-through air channels to form the micro-collimators. The micro-collimators formed by etching the irradiated films for 2.7, 3, 4 h were experimentally shown to be able to restrict alpha-particles to those very close to normal incidence, while that formed by etching the irradiated film for 4.5 h started to allow alpha-particles with larger deviations from normal incidence to pass through, the latter being likely due to overlapping of air channels from excessive etching.","subitem_description_type":"Abstract"}]},"item_8_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.1016/j.nima.2010.12.100","subitem_relation_type_select":"DOI"}}]},"item_8_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0168-9002","subitem_source_identifier_type":"ISSN"}]},"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":"W.Y., Choi Viann"}],"nameIdentifiers":[{"nameIdentifier":"457682","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Ng, C.K.M."}],"nameIdentifiers":[{"nameIdentifier":"457683","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Nikezic, Dragoslav"}],"nameIdentifiers":[{"nameIdentifier":"457684","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Konishi, Teruaki"}],"nameIdentifiers":[{"nameIdentifier":"457685","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"K.N., Yu Peter"}],"nameIdentifiers":[{"nameIdentifier":"457686","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"小西 輝昭","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"457687","nameIdentifierScheme":"WEKO"}]}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Micro-collimators fabricated by chemical etching of thin polyallyldiglycol carbonate polymer films exposed to oxygen ions","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Micro-collimators fabricated by chemical etching of thin polyallyldiglycol carbonate polymer films exposed to oxygen ions"}]},"item_type_id":"8","owner":"1","path":["1"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-02-03"},"publish_date":"2011-02-03","publish_status":"0","recid":"45992","relation_version_is_last":true,"title":["Micro-collimators fabricated by chemical etching of thin polyallyldiglycol carbonate polymer films exposed to oxygen ions"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-05-15T23:57:10.217821+00:00"}