Published 1999 | Version v1
Journal article Metadata-only

Precision spectroscopy in He as a test of QED

Creators

  • 1. Brigham Young Univ., Provo, UT (United States). Dept. of Physics and Astronomy
  • 2. National Inst. of Standards and Technology, Gaithersburg, MD (United States)
  • 3. SDL Inc., San Jose, CA (United States)
  • 4. Australian National Univ., Canberra, ACT (Australia)
  • 5. Imperial Coll., London (United Kingdom)
  • 6. Maryland Univ., College Park, MD (United States). Inst. for Physical Science and Technology
  • 7. Inst. d'Optique, Orsay (France)
  • 8. Connecticut Univ., Storrs, CT (United States). Dept. of Physics

Description

High-resolution laser-based measurements of energy levels have spurred the development and refinement of quantum electrodynamic calculations. We have extended very-high-resolution laser spectroscopy techniques into the vacuum ultraviolet wavelength region at λ ∼ 120 nm to determine the Lamb shift in the ground state of He I. The importance of this measurement to high accuracy quantum electrodynamics calculations is discussed. Details of the present measurement and future improvements are presented. (orig.)

Additional details

Publishing Information

Journal Title
Physica Scripta. T
Journal Volume
83
Journal Page Range
p. 76-82
ISSN
0281-1847

Conference

Title
6. international colloquium on atomic spectra and oscillator strengths
Acronym
ASOS-6
Dates
9-13 Aug 1998
Place
Victoria (Canada)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
Sweden
INIS RN
31005393
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ATOMIC PHYSICS; EXCITED STATES; GROUND STATES; HELIUM; IONIZATION POTENTIAL; LAMB SHIFT; QUANTUM ELECTRODYNAMICS; ULTRAVIOLET SPECTRA
Descriptors DEC
ELECTRODYNAMICS; ELEMENTS; ENERGY LEVELS; FIELD THEORIES; FLUIDS; GASES; NONMETALS; PHYSICS; QUANTUM FIELD THEORY; RARE GASES; SPECTRA; SPECTRAL SHIFT

Optional Information

Notes
54 refs.