{"id":"https://openalex.org/W65099899","doi":"https://doi.org/10.1103/physreva.15.203","title":"Measurement of gJ(Rb87)gJ(K39) by spin-exchange optical pumping","display_name":"Measurement of gJ(Rb87)gJ(K39) by spin-exchange optical pumping","publication_year":1977,"publication_date":"1977-01-01","ids":{"openalex":"https://openalex.org/W65099899","doi":"https://doi.org/10.1103/physreva.15.203","mag":"65099899"},"language":"en","primary_location":{"id":"doi:10.1103/physreva.15.203","doi":"https://doi.org/10.1103/physreva.15.203","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physreva.15.203","pdf_url":null,"source":{"id":"https://openalex.org/S164566984","display_name":"Physical Review A","issn_l":"0556-2791","issn":["0556-2791","1050-2947","1094-1622","1538-4446","2469-9926","2469-9934","2469-9942"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-2","ki-jl-1","norway-2","poland-100","poland-70","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320261","host_organization_name":"American Physical Society","host_organization_lineage":["https://openalex.org/P4310320261"],"host_organization_lineage_names":["American Physical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Physical Review A","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5074596275","display_name":"T. J. Beahn","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"T. J. Beahn","raw_affiliation_strings":["Laboratory for Physical Sciences, 4928 College Avenue, College Park, Maryland 20740"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Laboratory for Physical Sciences, 4928 College Avenue, College Park, Maryland 20740","institution_ids":["https://openalex.org/I66946132"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5086102917","display_name":"Fernand D. Bedard","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I66946132","display_name":"University of Maryland, College Park","ror":"https://ror.org/047s2c258","country_code":"US","type":"education","lineage":["https://openalex.org/I66946132"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"F. D. Bedard","raw_affiliation_strings":["Laboratory for Physical Sciences, 4928 College Avenue, College Park, Maryland 20740"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Laboratory for Physical Sciences, 4928 College Avenue, College Park, Maryland 20740","institution_ids":["https://openalex.org/I66946132"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I66946132"],"apc_list":{"value":2675,"currency":"USD","value_usd":2675},"apc_paid":null,"fwci":0.6051,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.59417863,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"15","issue":"1","first_page":"203","last_page":"212"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11993","display_name":"Atomic and Subatomic Physics Research","score":0.7627000212669373,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11993","display_name":"Atomic and Subatomic Physics Research","score":0.7627000212669373,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10523","display_name":"Atomic and Molecular Physics","score":0.1234000027179718,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12004","display_name":"Advanced Frequency and Time Standards","score":0.09200000017881393,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/spin-exchange-optical-pumping","display_name":"spin-exchange optical pumping","score":0.9129999876022339},{"id":"https://openalex.org/keywords/nuclear-g-factor","display_name":"nuclear g-factor","score":0.47699999809265137},{"id":"https://openalex.org/keywords/rubidium-87","display_name":"rubidium-87","score":0.9290000200271606},{"id":"https://openalex.org/keywords/potassium-39","display_name":"potassium-39","score":1.0},{"id":"https://openalex.org/keywords/alkali-atoms","display_name":"alkali atoms","score":0.6299999952316284}],"concepts":[{"id":"https://openalex.org/C131538251","wikidata":"https://www.wikidata.org/wiki/Q1413102","display_name":"Hyperfine structure","level":2,"score":0.6289488077163696},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.6226786971092224},{"id":"https://openalex.org/C25227350","wikidata":"https://www.wikidata.org/wiki/Q201805","display_name":"Zeeman effect","level":3,"score":0.6113355159759521},{"id":"https://openalex.org/C186370098","wikidata":"https://www.wikidata.org/wiki/Q442787","display_name":"Energy (signal processing)","level":2,"score":0.4464445114135742},{"id":"https://openalex.org/C184779094","wikidata":"https://www.wikidata.org/wiki/Q26383","display_name":"Atomic physics","level":1,"score":0.4248754382133484},{"id":"https://openalex.org/C115260700","wikidata":"https://www.wikidata.org/wiki/Q11408","display_name":"Magnetic field","level":2,"score":0.16166502237319946},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.12028118968009949}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1103/physreva.15.203","doi":"https://doi.org/10.1103/physreva.15.203","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physreva.15.203","pdf_url":null,"source":{"id":"https://openalex.org/S164566984","display_name":"Physical Review A","issn_l":"0556-2791","issn":["0556-2791","1050-2947","1094-1622","1538-4446","2469-9926","2469-9934","2469-9942"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-2","ki-jl-1","norway-2","poland-100","poland-70","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320261","host_organization_name":"American Physical Society","host_organization_lineage":["https://openalex.org/P4310320261"],"host_organization_lineage_names":["American Physical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Physical Review A","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W1664015001","https://openalex.org/W1982742288","https://openalex.org/W2021139964","https://openalex.org/W2029892762","https://openalex.org/W2040312529","https://openalex.org/W2042291739","https://openalex.org/W2046006980","https://openalex.org/W2048128384","https://openalex.org/W2054046812","https://openalex.org/W2086169175","https://openalex.org/W2230848627","https://openalex.org/W3100210088","https://openalex.org/W4211090409"],"related_works":["https://openalex.org/W2332664386","https://openalex.org/W2334339910","https://openalex.org/W315009494","https://openalex.org/W2891991118","https://openalex.org/W2230848627","https://openalex.org/W2999971785","https://openalex.org/W2314445027","https://openalex.org/W2021139964","https://openalex.org/W757676380","https://openalex.org/W3043738617"],"abstract_inverted_index":{"The":[0,90],"method":[1],"of":[2,25,36,52,76,99],"spin-exchange":[3],"optical":[4],"pumping":[5,77],"has":[6],"been":[7],"used":[8],"to":[9],"measure":[10],"the":[11,15,26,40,45,53,59,63,86,94,100],"ratio":[12],"$\\frac{{g}_{J}({\\mathrm{Rb}}^{87})}{{g}_{J}({\\mathrm{K}}^{39})}$":[13],"for":[14,62,70],"alkalis":[16],"in":[17,32,84,104,108],"their":[18],"$^{2}S_{\\frac{1}{2}}$":[19],"ground":[20,28],"states.":[21],"Zeeman":[22],"hyperfine":[23],"splittings":[24],"atomic":[27],"states":[29,46],"were":[30,47,68,82,107],"produced":[31],"a":[33],"magnetic":[34],"field":[35],"43":[37],"G,":[38],"and":[39,66,93,96],"rf":[41],"transition":[42],"frequencies":[43],"between":[44],"measured.":[48],"A":[49],"best":[50,71],"fit":[51],"data":[54],"was":[55],"then":[56],"made":[57],"using":[58],"Breit-Rabi":[60],"expression":[61],"energy":[64],"levels,":[65],"constants":[67],"adjusted":[69],"fit.":[72],"Possible":[73],"systematic":[74],"effects":[75],"light,":[78],"buffer":[79],"pressure,":[80],"etc.,":[81],"considered":[83],"obtaining":[85],"final":[87],"result":[88],"$\\frac{{g}_{J}({\\mathrm{Rb}}^{87})}{{g}_{J}({\\mathrm{K}}^{39})}=1.00001845(7)$.":[89],"${\\mathrm{K}}^{39}$":[91],"${g}_{I}$":[92],"${g}_{J}$":[95],"$\\frac{{g}_{I}}{{g}_{J}}$":[97],"ratios":[98],"rubidium":[101],"isotopes":[102],"obtained":[103],"check":[105],"runs":[106],"good":[109],"agreement":[110],"with":[111],"published":[112],"high-precision":[113],"data.":[114]},"counts_by_year":[],"updated_date":"2026-11-09T13:22:03.289127","created_date":"2016-06-24T00:00:00"}