The University of Southampton
University of Southampton Institutional Repository

An interferometric measurement of the 1s-2s transition frequency in atomic hydrogen

An interferometric measurement of the 1s-2s transition frequency in atomic hydrogen
An interferometric measurement of the 1s-2s transition frequency in atomic hydrogen
Two photon Doppler free laser spectroscopy has been used to measure the 1S½--2S½ transition frequency in atomic hydrogen by interferometric comparison with a reference line in 130Te2. The measured 1S½--2S½ transition frequency of 2 466 061 397 (25) MHz is in good agreement with the theoretical value 2 466 061 405.5 (2.9) MHz. This measurement can be used to deduce a value for the ground state Lamb shift giving 8182(25) MHz, which may be compared with a theoretical value 8173.248(81) MHz. Alternatively a value of the Rydberg constant can be deduced as 10 973 731.50 (11) m-1 which is consistent with other measurements but with a slightly larger uncertainty. This is the first time that the Rydberg constant has been measured on a transition in atomic hydrogen other than Balmer (alpha) using techniques of laser spectroscopy.
Barr, John Richard McAlpine
74742d08-7859-45c8-8c85-1b7bf4496435
Barr, John Richard McAlpine
74742d08-7859-45c8-8c85-1b7bf4496435
Ferguson, A.I.
7764759c-2b56-4e74-ad3d-fc8b666853c3

Barr, John Richard McAlpine (1986) An interferometric measurement of the 1s-2s transition frequency in atomic hydrogen. University of Southampton, Physics Department, Doctoral Thesis, 249pp.

Record type: Thesis (Doctoral)

Abstract

Two photon Doppler free laser spectroscopy has been used to measure the 1S½--2S½ transition frequency in atomic hydrogen by interferometric comparison with a reference line in 130Te2. The measured 1S½--2S½ transition frequency of 2 466 061 397 (25) MHz is in good agreement with the theoretical value 2 466 061 405.5 (2.9) MHz. This measurement can be used to deduce a value for the ground state Lamb shift giving 8182(25) MHz, which may be compared with a theoretical value 8173.248(81) MHz. Alternatively a value of the Rydberg constant can be deduced as 10 973 731.50 (11) m-1 which is consistent with other measurements but with a slightly larger uncertainty. This is the first time that the Rydberg constant has been measured on a transition in atomic hydrogen other than Balmer (alpha) using techniques of laser spectroscopy.

PDF
Barr_1986_thesis_1730T.pdf - Other
Restricted to Repository staff only

More information

Published date: May 1986
Organisations: University of Southampton, Physics & Astronomy

Identifiers

Local EPrints ID: 396719
URI: https://eprints.soton.ac.uk/id/eprint/396719
PURE UUID: aea71c34-861b-423d-8a51-b89823278234

Catalogue record

Date deposited: 22 Jun 2016 12:38
Last modified: 17 Jul 2017 18:46

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×