Limits for spatial anisotropy by use of nuclear-spin-polarized Be-9(+) ions

Details Limits for spatial anisotropy by use of nuclear-spin-polarized Be-9(+) ions Limits for spatial anisotropy by use of nuclear-spin-polarized Be-9(+) ions

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985phrvl..54.2387p&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 54, June 3, 1985, p. 2387-2390. USAF-Navy-supported research.

Other

123

Beryllium 9, Gravitation Theory, Gravitational Fields, Hydrogen Masers, Metal Ions, Nuclear Spin, Spatial Distribution, Anisotropy, Atomic Clocks, Atomic Structure, Hyperfine Structure, Metric Space, Polarization (Spin Alignment), Relativistic Effects

Scientific paper

The frequency of the 2 2S(1/2) (M sub I, M sub J) = (-3/2, +1/2) to (-1/2, +1/2) ground-state hyperfine nuclear-spin-flip transition in Be-9(+) is determined experimentally relative to the frequency of a passive H maser and plotted against sidereal time in an effort to detect deviations from local Lorentz invariance (or from any other effect related to the orientation of the atomic clocks to the sun or fixed stars). A null result at the 100-microHz level is obtained, with upper limits a factor of 300 lower than those of Hughes et al. (1960), Lewis et al. (1966), or Drever (1961).

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