Lifetimes of some highly excited levels in the Pb-I spectrum measured by the hanle method

Details Lifetimes of some highly excited levels in the Pb-I spectrum measured by the hanle method Lifetimes of some highly excited levels in the Pb-I spectrum measured by the hanle method

Jun 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971zphy..241..217g&link_type=abstract

Zeitschrift für Physik, Volume 241, Issue 3, pp.217-235

Physics

13

Scientific paper

Natural lifetimes of some highly excited levels in the Pb-I spectrum have been measured by the zero field level crossing (Hanle) method. The levels were reached by optical excitation from the metastable 6 p 2 3 P 2 and 6 p 2 3 P 1 states, were a considerable population had been created by means of a dc discharge in a Pb atomic beam. An atomic beam source producing atoms in metastable states is described. For the lifetimes τ of the investigated levels we find: τ(6 p(1/2)6 d 3 D 1)=3.74(28) ns, τ(6 p(1/2)6 d 3 F 2)=25.8(1.3) ns, τ(6 p(1/2)6 d 3 D 2)=4.17(-31) (-49) ns, τ(6 p(1/2)6 d 3 F 3)=6.08(26) ns, τ(6 p(3/2)7 s)3 P 2=5.85(27) ns. These results are compared with lifetimes derived from oscillator strengths given in the literature.

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