{"id":{"repo_id":"nus","oai_identifier":"oai:scholarbank.nus.edu.sg:10635/119513"},"canonical_url":"https://search.dev.ndltd.org/etd/nus/oai:scholarbank.nus.edu.sg:10635/119513","repository":{"repo_id":"nus","name":"National University of Singapore","base_url":"https://scholarbank.nus.edu.sg/oai/request"},"display":{"title":"Design of multi-channel spectrometers for scanning ion/electron microscopes","abstract":"The potential advantages of multi-channel analysers over conventional sequential detection are well known and are active areas of research both for electron energy spectroscopy and ion mass spectroscopy. Their inherent advantage of capturing the entire spectrum in parallel, promises at least an order of magnitude speed up in data acquisition times for analytical techniques such as Auger Electron Microscopy (AES) and Secondary Ion Mass Spectrometry (SIMS). Recently, a new set of multi-channel spectrometer designs have been proposed which involve the simultaneous adjustment of an array of electrode voltages/coil currents using computational simulation methods, departing from the traditional approach of using certain analytical field distributions or electrode shapes. The aim of this PhD work is to critically evaluate these more complex multi-channel designs and further develop them, transforming them into realistic engineering designs from which prototype analysers can be made.","abstract_html":"The potential advantages of multi-channel analysers over conventional sequential detection are well known and are active areas of research both for electron energy spectroscopy and ion mass spectroscopy. Their inherent advantage of capturing the entire spectrum in parallel, promises at least an order of magnitude speed up in data acquisition times for analytical techniques such as Auger Electron Microscopy (AES) and Secondary Ion Mass Spectrometry (SIMS). Recently, a new set of multi-channel spectrometer designs have been proposed which involve the simultaneous adjustment of an array of electrode voltages/coil currents using computational simulation methods, departing from the traditional approach of using certain analytical field distributions or electrode shapes. The aim of this PhD work is to critically evaluate these more complex multi-channel designs and further develop them, transforming them into realistic engineering designs from which prototype analysers can be made.","abstract_has_math":false,"creators":["CHEONG KANG HAO"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-08-20","date_published":"2014-08-20","updated_at":"2026-07-24T03:30:34Z","subjects":["multi-channel spectrometer; energy spectrometer; mass spectrometer"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["CHEONG KANG HAO"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2014-08-20"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://scholarbank.nus.edu.sg/handle/10635/119513"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["multi-channel spectrometer; energy spectrometer; mass spectrometer"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://scholarbank.nus.edu.sg/bitstreams/dc5f6941-6fe2-4478-a89e-78d9b86a89ce/download"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The potential advantages of multi-channel analysers over conventional sequential detection are well known and are active areas of research both for electron energy spectroscopy and ion mass spectroscopy. Their inherent advantage of capturing the entire spectrum in parallel, promises at least an order of magnitude speed up in data acquisition times for analytical techniques such as Auger Electron Microscopy (AES) and Secondary Ion Mass Spectrometry (SIMS). Recently, a new set of multi-channel spectrometer designs have been proposed which involve the simultaneous adjustment of an array of electrode voltages/coil currents using computational simulation methods, departing from the traditional approach of using certain analytical field distributions or electrode shapes. The aim of this PhD work is to critically evaluate these more complex multi-channel designs and further develop them, transforming them into realistic engineering designs from which prototype analysers can be made."]},{"key":"dc:format.checksum.md5","label":"Dc Format Checksum Md5","values":["dd24f45dc098a4e18b41b0e7b867d2c2","19a399d89356dd06cf21c9204c89efd7"]},{"key":"dc:title","label":"Title","values":["Design of multi-channel spectrometers for scanning ion/electron microscopes"]}]}],"canonical_facts":{"dc:creator":["CHEONG KANG HAO"],"dc:date.issued":["2014-08-20"],"dc:description.abstract":["The potential advantages of multi-channel analysers over conventional sequential detection are well known and are active areas of research both for electron energy spectroscopy and ion mass spectroscopy. Their inherent advantage of capturing the entire spectrum in parallel, promises at least an order of magnitude speed up in data acquisition times for analytical techniques such as Auger Electron Microscopy (AES) and Secondary Ion Mass Spectrometry (SIMS). Recently, a new set of multi-channel spectrometer designs have been proposed which involve the simultaneous adjustment of an array of electrode voltages/coil currents using computational simulation methods, departing from the traditional approach of using certain analytical field distributions or electrode shapes. The aim of this PhD work is to critically evaluate these more complex multi-channel designs and further develop them, transforming them into realistic engineering designs from which prototype analysers can be made."],"dc:format.checksum.md5":["dd24f45dc098a4e18b41b0e7b867d2c2","19a399d89356dd06cf21c9204c89efd7"],"dc:identifier.uri":["https://scholarbank.nus.edu.sg/bitstreams/dc5f6941-6fe2-4478-a89e-78d9b86a89ce/download"],"dc:relation.isreferencedby":["https://scholarbank.nus.edu.sg/handle/10635/119513"],"dc:subject":["multi-channel spectrometer; energy spectrometer; mass spectrometer"],"dc:title":["Design of multi-channel spectrometers for scanning ion/electron microscopes"],"dc:type":["Thesis"]},"updated_at":"2026-07-24T03:30:34Z"}