Observation of the forbidden magnetic dipole transition 6/sup 2/P/sub 1/2/. -->. 7/sup 2/P/sub 1/2/ in atomic thallium. [Interference, M1 and E1 amplitudes, polarization, fluorescence, hyperfine structure]
A measurement of the 6/sup 2/P/sub 1/2/ ..-->.. 7/sup 2/P/sub 1/2/ forbidden magnetic dipole matrix element in atomic thallium is described. A pulsed, linearly polarized dye laser tuned to the transition frequency is used to excite the thallium vapor from the 6/sup 2/P/sub 1/2/ ground state to the 7/sup 2/P/sub 1/2/ excited state. Interference between the magnetic dipole M1 amplitude and a static electric field induced E1 amplitude results in an atomic polarization of the 7/sup 2/P/sub 1/2/ state, and the subsequent circular polarization of 535 nm fluorescence. The circular polarization is seen to be proportional to (M1)/(E1) as expected, and measured for several transitions between hyperfine levels of the 6/sup 2/P/sub 1/2/ and 7/sup 2/P/sub 1/2/ states. The result is (M1) = -(2.11 +- 0.30) x 10/sup -5/ parallel bar e parallel bar dirac constant/2mc, in agreement with theory.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7330001
- Report Number(s):
- LBL-5731; TRN: 77-006847
- Resource Relation:
- Other Information: Thesis
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
THALLIUM
ENERGY-LEVEL TRANSITIONS
ELECTRIC DIPOLE MOMENTS
ELECTRIC FIELDS
EXCITED STATES
FLUORESCENCE
GROUND STATES
HYPERFINE STRUCTURE
INTERFERENCE
LASERS
MAGNETIC DIPOLE MOMENTS
MATRIX ELEMENTS
P STATES
POLARIZATION
SCATTERING AMPLITUDES
VAPORS
AMPLITUDES
DIPOLE MOMENTS
ELECTRIC MOMENTS
ELEMENTS
ENERGY LEVELS
FLUIDS
GASES
LUMINESCENCE
MAGNETIC MOMENTS
METALS
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory