skip to main content

Title: Progress in Spectroscopy of the 1S–3S Transition in Hydrogen

We report the latest advances in the Doppler-free spectroscopy of the 1S–3S transition in hydrogen. A new continuous ultra-violet source has been developed and delivers a power level of 15 mW. With this setup, the statistical uncertainty on the 1S–3S transition frequency measurement is 2.2 kHz. Combined with the 1S–2S frequency, absolute accuracy at that level would significantly enlighten the proton radius puzzle.
Authors:
; ; ; ; ;  [1]
  1. Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, Collège de France, 4 place Jussieu, Case 74, 75252 Paris Cedex 05 (France)
Publication Date:
OSTI Identifier:
22493897
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physical and Chemical Reference Data; Journal Volume: 44; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; EMISSION SPECTROSCOPY; ENERGY-LEVEL TRANSITIONS; FREQUENCY MEASUREMENT; HYDROGEN; KHZ RANGE; PROTONS; S STATES; SPECTROSCOPY