Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 20: Atoms in Fields
A 20.9: Vortrag
Freitag, 6. April 2001, 17:45–18:00, H1058
MAGNETIC-FIELD INDUCED QUENCHING OF METASTABLE 3P2 AND 3P0 STATES IN INERT ATOMS — •E. Tchaplyguine1, V. Ovsiannikov1, and 2 — 1Faculty of Physics, Voronezh State University, 394693 Voronezh, Russia — 2
The first excited states of the inert atoms include two metastable ϕ1(0)=|(n+1)s[3/2]2⟩ and ϕ3(0)=|(n+1)s′[1/2]0⟩ and two resonant states ϕ2(0)=|(n+1)s[3/2]1⟩ and ϕ4(0)=|(n+1)s′[1/2]1⟩. To determine the wave function of an excited atom in field we diagonalize the atom – magnetic field interaction within the fine-structure manifold including the metastable sublevel. So the resonance states are mixed to the metastable states and thus determine the possibility of radiative quenching for the latter. The two resonant lines of a free atom are splitted by field into ten lines: two π- and two σ-lines from the lower doublet and two π- and two-times-two σ-lines from the upper doublet. The probability for emission of the field-induced lines may be presented in terms of probabilities for the resonant-line emission. The intensities of forbidden lines in Neon may become comparable to those of the allowed lines in the field of several tens of Tesla. The calculated results show the dependence of the line intensities on the magnetic quantum number M of the initial state. This kind of “circular dichroism” differs for different atoms.