Search for time-reversal symmetry violation in the hyperfine structure of thallium fluoride

Miscellaneous · Fri Jan 01 00:00:00 EST 1988

OSTI ID:5829520

Schropp, Jr, D R

A search for a Parity and Time-reversal violating energy shift was conducted in the hyperfine structure of the thallium fluoride molecule. The thallium nuclear magnetic resonance frequency was measured using a molecular beam of T{ell}F in the presence of parallel electric and magnetic fields, and a shift in this frequency was looked for when the electric and magnetic field orientation was changed to antiparallel. The thallium nmr frequency (approximately 120 kHz) was found to change by (-2.2{plus minus}2.1)x10{sup {minus}3}Hz upon reversal of the relative field orientation, less than 0.02 ppm. If the P- and T-violating energy shift were written in the Hamiltonian form H=-hd{sigma} {lambda}, with {sigma} a unit vector representing the thallium nuclear spin and {lambda} representing the internuclear axis unit vector, the interaction constant d=(2.4{plus minus}2.3)x10{sup {minus}3} Hz. This measurement implies new limits for several fundamental quantities of physical interest. A P- and T-violating weak-neutral tensor interaction strength constant has the value of C{sub T} = (-3.3{plus minus}3.2) x 10{sup {minus}6}, the electron electric dipole moment has the value d{sub e} = (2.7{plus minus}2.5)x10{sup {minus}24} e cm, and the proton electric dipole moment d{sub p}= (5.8{plus minus}5.6)x10{sup {minus}22} e cm, the most stringent limit to date.

• Research Organization: Yale Univ., New Haven, CT (USA)
• OSTI ID: 5829520
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
THALLIUM FLUORIDES
HYPERFINE STRUCTURE
ELECTRIC DIPOLE MOMENTS
ELECTRIC FIELDS
ELECTRONS
HAMILTONIANS
LIMITING VALUES
MAGNETIC FIELDS
NUCLEAR MAGNETIC RESONANCE
P INVARIANCE
PROTONS
T INVARIANCE
WEAK INTERACTIONS
BARYONS
BASIC INTERACTIONS
DIPOLE MOMENTS
ELECTRIC MOMENTS
ELEMENTARY PARTICLES
FERMIONS
FLUORIDES
FLUORINE COMPOUNDS
HADRONS
HALIDES
HALOGEN COMPOUNDS
INTERACTIONS
INVARIANCE PRINCIPLES
LEPTONS
MAGNETIC RESONANCE
MATHEMATICAL OPERATORS
NUCLEONS
QUANTUM OPERATORS
RESONANCE
THALLIUM COMPOUNDS
THALLIUM HALIDES
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory