Magnetic Johnson noise constraints on electron electric dipole moment experiments

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.012506· OSTI ID:20718353

Munger, Jr, Charles T ^[1]

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1. Stanford Linear Accelerator Center, 2575 Sand Hill Road, Mail Stop 59, Menlo Park, California 94025 (United States) and Lawrence Berkeley National Laboratory, Mail Stop 71-259, Berkeley, California 94320 (United States)

Magnetic fields from statistical fluctuations in currents in conducting materials broaden atomic linewidths by the Zeeman effect. The constraints imposed by this broadening on the design of experiments that measure the electric dipole moment of the electron are analyzed. Contrary to the predictions of Lamoreaux [S. K. Lamoreaux, Phys. Rev. A 60, 1717 (1999)], the standard material for high-permeability magnetic shields proves to be as significant a source of broadening as is an ordinary metal. A scheme that would replace this standard material with ferrite is proposed.

• OSTI ID: 20718353
• Journal Information: Physical Review. A, Vol. 72, Issue 1; Other Information: DOI: 10.1103/PhysRevA.72.012506; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ELECTRIC DIPOLE MOMENTS
ELECTRONS
FERRITE
FLUCTUATIONS
LINE WIDTHS
MAGNETIC FIELDS
MAGNETIC MOMENTS
MAGNETIC SHIELDING
MAGNETIC SUSCEPTIBILITY
NOISE
ZEEMAN EFFECT