subject:(Lamb shift)

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York University

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

Degree: PhD, Physics And Astronomy, 2020, York University

URL: http://hdl.handle.net/10315/37734

A 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). Advisors/Committee Members: Hessels, Eric (advisor).

Subjects/Keywords: Physics; Proton; Proton radius; Proton size; Hydrogen; Hydrogen spectroscopy; Spectroscopy; Precision spectroscopy; Proton rms charge radius; Proton radius puzzle; Lamb shift; FOSOF; SOF

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APA (6^th Edition):

Bezginov, N. (2020). Measurement of the 2S1/2, f = 0 2P1/2, f = 1 Transition in Atomic Hydrogen. (Doctoral Dissertation). York University. Retrieved from http://hdl.handle.net/10315/37734

Chicago Manual of Style (16^th Edition):

Bezginov, Nikita. “Measurement of the 2S1/2, f = 0 2P1/2, f = 1 Transition in Atomic Hydrogen.” 2020. Doctoral Dissertation, York University. Accessed January 20, 2021. http://hdl.handle.net/10315/37734.

MLA Handbook (7^th Edition):

Bezginov, Nikita. “Measurement of the 2S1/2, f = 0 2P1/2, f = 1 Transition in Atomic Hydrogen.” 2020. Web. 20 Jan 2021.

Vancouver:

Bezginov N. Measurement of the 2S1/2, f = 0 2P1/2, f = 1 Transition in Atomic Hydrogen. [Internet] [Doctoral dissertation]. York University; 2020. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/10315/37734.

Council of Science Editors:

Bezginov N. Measurement of the 2S1/2, f = 0 2P1/2, f = 1 Transition in Atomic Hydrogen. [Doctoral Dissertation]. York University; 2020. Available from: http://hdl.handle.net/10315/37734

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