{"id":{"repo_id":"rice","oai_identifier":"oai:repository.rice.edu:1911/17170"},"canonical_url":"https://search.dev.ndltd.org/etd/rice/oai:repository.rice.edu:1911/17170","repository":{"repo_id":"rice","name":"Rice University","base_url":"https://repository.rice.edu/server/oai/request"},"display":{"title":"Laserless slow atom source for loading atom traps","abstract":"Permanent magnets are used to selectively remove the fast atoms from an atomic beam and to guide the remaining slow atoms into a trapping region. The permanent magnets establish a quadrupole field which extends along the axis of a bent vacuum nipple. A threshold velocity is set by the radius of curvature of the bent nipple and the strength of the magnets. Only those atoms which are slower than the threshold are transmitted to the trapping region. For a 30 cm radius of curvature and a Maxwellian velocity distribution at the atomic beam source, a flux of 10$\\sp9$ atoms/s is expected to be delivered to the trapping region. Experimentally, a flux of only 10$\\sp6$ atoms/s is observed. The flux deficit is attributed to an attenuation of slow atoms resulting from collisions within the nozzle of the recirculating oven which is used to produce the atomic beam.","abstract_html":"Permanent magnets are used to selectively remove the fast atoms from an atomic beam and to guide the remaining slow atoms into a trapping region. The permanent magnets establish a quadrupole field which extends along the axis of a bent vacuum nipple. A threshold velocity is set by the radius of curvature of the bent nipple and the strength of the magnets. Only those atoms which are slower than the threshold are transmitted to the trapping region. For a 30 cm radius of curvature and a Maxwellian velocity distribution at the atomic beam source, a flux of 10$\\sp9$ atoms/s is expected to be delivered to the trapping region. Experimentally, a flux of only 10$\\sp6$ atoms/s is observed. The flux deficit is attributed to an attenuation of slow atoms resulting from collisions within the nozzle of the recirculating oven which is used to produce the atomic beam.","abstract_has_math":true,"creators":["Gerton, Jordan Mitchell"],"institution":"Rice University","degree_name":"Master of Arts","degree_level":"Masters","degree_discipline":"Natural Sciences","degree_department":null,"school":null,"contributors":[],"advisors":["Hulet, Randall G."],"committee_chairs":[],"committee_members":[],"year":1998,"date_issued":"1998","date_published":"1998","updated_at":"2026-07-24T04:10:30Z","subjects":["Atomic physics"],"languages":["eng"],"rights":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1911/17170","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Hulet, Randall G."]},{"key":"dc:creator","label":"Author","values":["Gerton, Jordan Mitchell"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2009-06-04T06:38:33Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2009-06-04T06:38:33Z"]},{"key":"dc:date.issued","label":"Date","values":["1998"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Natural Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Arts"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Rice University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Atomic physics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1911/17170"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Permanent magnets are used to selectively remove the fast atoms from an atomic beam and to guide the remaining slow atoms into a trapping region. The permanent magnets establish a quadrupole field which extends along the axis of a bent vacuum nipple. A threshold velocity is set by the radius of curvature of the bent nipple and the strength of the magnets. Only those atoms which are slower than the threshold are transmitted to the trapping region. For a 30 cm radius of curvature and a Maxwellian velocity distribution at the atomic beam source, a flux of 10$\\sp9$ atoms/s is expected to be delivered to the trapping region. Experimentally, a flux of only 10$\\sp6$ atoms/s is observed. The flux deficit is attributed to an attenuation of slow atoms resulting from collisions within the nozzle of the recirculating oven which is used to produce the atomic beam."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Laserless slow atom source for loading atom traps"]}]}],"canonical_facts":{"dc:contributor.advisor":["Hulet, Randall G."],"dc:creator":["Gerton, Jordan Mitchell"],"dc:date.accessioned":["2009-06-04T06:38:33Z"],"dc:date.available":["2009-06-04T06:38:33Z"],"dc:date.issued":["1998"],"dc:description.abstract":["Permanent magnets are used to selectively remove the fast atoms from an atomic beam and to guide the remaining slow atoms into a trapping region. The permanent magnets establish a quadrupole field which extends along the axis of a bent vacuum nipple. A threshold velocity is set by the radius of curvature of the bent nipple and the strength of the magnets. Only those atoms which are slower than the threshold are transmitted to the trapping region. For a 30 cm radius of curvature and a Maxwellian velocity distribution at the atomic beam source, a flux of 10$\\sp9$ atoms/s is expected to be delivered to the trapping region. Experimentally, a flux of only 10$\\sp6$ atoms/s is observed. The flux deficit is attributed to an attenuation of slow atoms resulting from collisions within the nozzle of the recirculating oven which is used to produce the atomic beam."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/1911/17170"],"dc:language.iso":["eng"],"dc:rights":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."],"dc:subject":["Atomic physics"],"dc:title":["Laserless slow atom source for loading atom traps"],"dc:type":["Thesis"],"thesis:degree_discipline":["Natural Sciences"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Arts"],"thesis:institution_name":["Rice University"]},"updated_at":"2026-07-24T04:10:30Z"}