Measurement of the 2S1/2, f = 0 2P1/2, f = 1 Transition in Atomic Hydrogen

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dc.contributor.advisorHessels, Eric
dc.contributor.authorBezginov, Nikita
dc.date.accessioned2020-08-11T12:47:35Z
dc.date.available2020-08-11T12:47:35Z
dc.date.copyright2020-03
dc.date.issued2020-08-11
dc.date.updated2020-08-11T12:47:35Z
dc.degree.disciplinePhysics And Astronomy
dc.degree.levelDoctoral
dc.degree.namePhD - Doctor of Philosophy
dc.description.abstractA high-precision measurement of the transition frequency between the 2S_1/2, f=0 and 2P_1/2, f=1 states in atomic hydrogen is presented. The interval is measured by using a fast beam of hydrogen atoms and a novel method of frequency-offset separated oscillatory fields (FOSOF), an extension of the separated-oscillatory-fields (SOF) method. Our result for the 2S_1/2, f=0-to-2P_1/2, f=1 interval is 909871.7 kHz with the total uncertainty of 3.2 kHz, which is the most precise measurement of this transition to date. The root-mean-squared charge radius of the proton, determined from this measurement, is r_p=0.833(10) fm, in agreement with the proton radius determined from muonic-hydrogen spectroscopy, and 4.2 standard deviations away from the CODATA 2014 recommended value, which is determined entirely using electrons (using hydrogen spectroscopy and electron-proton scattering).
dc.identifier.urihttp://hdl.handle.net/10315/37734
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectPhysics
dc.subject.keywordsProton
dc.subject.keywordsProton radius
dc.subject.keywordsProton size
dc.subject.keywordsHydrogen
dc.subject.keywordsHydrogen spectroscopy
dc.subject.keywordsSpectroscopy
dc.subject.keywordsPrecision spectroscopy
dc.subject.keywordsProton rms charge radius
dc.subject.keywordsProton radius puzzle
dc.subject.keywordsLamb shift
dc.subject.keywordsFOSOF
dc.subject.keywordsSOF
dc.titleMeasurement of the 2S1/2, f = 0 2P1/2, f = 1 Transition in Atomic Hydrogen
dc.typeElectronic Thesis or Dissertation

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