Precision measurement of the Rydberg constant by laser saturation spectroscopy of the balmer α line in hydrogen and deuterium

T. W. Hänsch, M. H. Nayfeh, S. A. Lee, S. M. Curry, I. S. Shahin

Research output: Contribution to journalArticlepeer-review

Abstract

We have determined a new Rydberg value, R=109737.3143(10) cm-1, with an order of magnitude improvement in precision, by measuring the absolute wavelengths of resolved fine-structure components of the Balmer α line in hydrogen and deuterium, excited in a dc gas discharge. Doppler broadening was eliminated by saturation spectroscopy with a pulsed dye laser. An iodine-stabilized He-Ne laser was the wavelength standard. Possible sources of systematic errors have been carefully investigated.

Original languageEnglish (US)
Pages (from-to)1336-1340
Number of pages5
JournalPhysical review letters
Volume32
Issue number24
DOIs
StatePublished - 1974
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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