{"id":{"repo_id":"umkc","oai_identifier":"oai:mospace.umsystem.edu:10355/51941"},"canonical_url":"https://search.dev.ndltd.org/etd/umkc/oai:mospace.umsystem.edu:10355/51941","repository":{"repo_id":"umkc","name":"University of Missouri - Kansas City","base_url":"https://mospace.umsystem.edu/oai/request"},"display":{"title":"Asymmetric Positron Annihilation in Chiral Tartrate and Tartaric Acid Crystals","abstract":"Positron annihilation lifetime spectroscopy (PALS) has been used to study the interactions of positrons with chiral tartaric acids and tartrates. Differences in lifetimes of and its intensity I2 were compared between large crystals grown from the D- and L- enantiomers of sodium ammonium tartrate and tartaric acid. A tentative but statistical difference in and I2 between enantiomers is noted with the L- enantiomers exhibiting longer positronium lifetimes and lower intensities, signifying a more stable environment for the positron and positronium. Possible implications for the dominance of L-amino acids in living matter are discussed.","abstract_html":"Positron annihilation lifetime spectroscopy (PALS) has been used to study the interactions of positrons with chiral tartaric acids and tartrates. Differences in lifetimes of and its intensity I2 were compared between large crystals grown from the D- and L- enantiomers of sodium ammonium tartrate and tartaric acid. A tentative but statistical difference in and I2 between enantiomers is noted with the L- enantiomers exhibiting longer positronium lifetimes and lower intensities, signifying a more stable environment for the positron and positronium. Possible implications for the dominance of L-amino acids in living matter are discussed.","abstract_has_math":false,"creators":["Corsiglia, Gerald A."],"institution":"University of Missouri–Kansas City","degree_name":"M.S.","degree_level":"Masters","degree_discipline":"Chemistry (UMKC)","degree_department":null,"school":null,"contributors":[],"advisors":["Van Horn, J. David"],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015","date_published":"2015","updated_at":"2026-07-24T05:19:15Z","subjects":[],"languages":["en_US"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/10355/51941","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Van Horn, J. 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David Van Horn","Vita","Includes bibliographical references (pages 58-61)","Thesis (M.S.)--Department of Chemistry. University of Missouri--Kansas City, 2015"]},{"key":"dc:description.abstract","label":"Abstract","values":["Positron annihilation lifetime spectroscopy (PALS) has been used to study the interactions of positrons with chiral tartaric acids and tartrates. Differences in lifetimes of and its intensity I2 were compared between large crystals grown from the D- and L- enantiomers of sodium ammonium tartrate and tartaric acid. A tentative but statistical difference in and I2 between enantiomers is noted with the L- enantiomers exhibiting longer positronium lifetimes and lower intensities, signifying a more stable environment for the positron and positronium. Possible implications for the dominance of L-amino acids in living matter are discussed."]},{"key":"dc:title","label":"Title","values":["Asymmetric Positron Annihilation in Chiral Tartrate and Tartaric Acid Crystals"]}]}],"canonical_facts":{"dc:contributor.advisor":["Van Horn, J. David"],"dc:creator":["Corsiglia, Gerald A."],"dc:date.accessioned":["2016-09-19T15:05:09Z"],"dc:date.available":["2016-09-19T15:05:09Z"],"dc:date.issued":["2015"],"dc:description":["Title from PDF of title page, viewed on September 19, 2016","Thesis advisor: J. David Van Horn","Vita","Includes bibliographical references (pages 58-61)","Thesis (M.S.)--Department of Chemistry. University of Missouri--Kansas City, 2015"],"dc:description.abstract":["Positron annihilation lifetime spectroscopy (PALS) has been used to study the interactions of positrons with chiral tartaric acids and tartrates. Differences in lifetimes of and its intensity I2 were compared between large crystals grown from the D- and L- enantiomers of sodium ammonium tartrate and tartaric acid. A tentative but statistical difference in and I2 between enantiomers is noted with the L- enantiomers exhibiting longer positronium lifetimes and lower intensities, signifying a more stable environment for the positron and positronium. Possible implications for the dominance of L-amino acids in living matter are discussed."],"dc:identifier.uri":["https://hdl.handle.net/10355/51941"],"dc:language.iso":["en_US"],"dc:publisher":["University of Missouri–Kansas City"],"dc:title":["Asymmetric Positron Annihilation in Chiral Tartrate and Tartaric Acid Crystals"],"dc:type":["Thesis"],"thesis:degree_discipline":["Chemistry (UMKC)"],"thesis:degree_level":["Masters"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Missouri--Kansas City"]},"updated_at":"2026-07-24T05:19:15Z"}