Acta Optica Sinica

Studies on natuval radiative lifetime in perterbed Rydberg odd parity sequences of Yb I

Peng Weixian

Published Jan 1, 1993• 0 citations

Abstract

Laser-atomic-beam and time resolved laser spectroscopy have been used to measure natural radiative lifetimes of 23 levels in perterbed Rydberg odd parity sequences of Yb with three-step excitation. The influence of several effects on measured lifetime values has been analyzed.

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Acta Optica Sinica

Studies on natuval radiative lifetime in perterbed Rydberg odd parity sequences of Yb I

Peng Weixian

Published Jan 1, 1993• 0 citations

OpenAlex

Abstract

has been analyzed.

Related papers

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Time-resolved collinear fast-beam laser spectroscopy has been used to measure the lifetime of the T=23 537 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$, J=9/2 odd-parity [abbreviated as (23 537)${\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}_{9/2}$] level in Nd ii. Nanosecond pulsed excitation was achieved with the Doppler switching technique. The fast ions were selectively excited from the metastable 4${\mathit{f}}^{4}$5d $^{6}$ ${\mathit{K}}_{9/2}$ level to the (23 537)${\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}_{9/2}$ level by the light of a cw dye laser. The decay of the resonance fluorescence photons emitted in the transition to the ground 4${\mathit{f}}^{4}$6s $^{6}$ ${\mathit{I}}_{7/2}$ level, as a function of the flight distance, was observed. The decay length was scaled into the decay time by the ion velocity, which was determined using the optical resonance itself. The lifetime is 27.7(9) ns.Time-resolved collinear fast-beam laser spectroscopy has been used to measure the lifetime of the T=23 537 ${\mathrm{cm}}^{\mathrm{\ensuremath{-}}1}$, J=9/2 odd-parity [abbreviated as (23 537)${\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}_{9/2}$] level in Nd ii. Nanosecond pulsed excitation was achieved with the Doppler switching technique. The fast ions were selectively excited from the metastable 4${\mathit{f}}^{4}$5d $^{6}$${\mathit{K}}_{9/2}$ level to the (23 537)${\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}_{9/2}$ level by the light of a cw dye laser. The decay of the resonance fluorescence photons emitted in the transition to the ground 4${\mathit{f}}^{4}$6s $^{6}$${\mathit{I}}_{7/2}$ level, as a function of the flight distance, was observed. The decay length was scaled into the decay time by the ion velocity, which was determined using the optical resonance itself. The lifetime is 27.7(9) ns.

Physical Review AFeb 1, 199110 citations

Using three-step laser excitation in an atomic beam and a time-resolved spectroscopy technique, we measured both the lifetimes of the Rydberg levels of Yb i belonging to the perturbed series 6nsp

^{3}

{\mathit{P}}_{2}

and the lifetimes of the perturbing 4${\mathit{f}}^{13}

5

{\mathit{d}}^{2}$6s

^{3}

{\mathit{P}}_{2}

{,}^{1}

{\mathit{D}}_{2}

levels. An expected shortening has been observed for the lifetimes of those levels which are strongly mixed with the perturbers.

Natural radiative lifetimes of ytterbium in the 6snd

{}^{1}

{D}_{2}

(n=10--29), 6snd

{}^{3}

{D}_{2}

(n=10--20) Rydberg sequences have been measured using stepwise excitation and a fluorescence-decay monitoring method. The lifetimes are perturbed by the 4${f}^{13}$5d6s6p configuration near n=11 and 27, except when the

{n}^{\mathrm{*}3}

dependence of the lifetime values appeared. The lifetimes of the perturbing 5d6s6p states were also measured.

Lifetimes of 21 excited states in atomic Yb were measured using time-resolved fluorescence detection following pulsed laser excitation. The lifetime of the 4${\mathit{f}}^{14}

5d6

{\mathit{s}}^{\mathrm{}3}$

{\mathit{D}}_{1}

state, which is of particular importance for a proposed study of parity nonconservation in atoms, was measured to be 380(30) ns. \textcopyright{} 1996 The American Physical Society.

^{6}

{\mathit{K}}_{9/2}

level to the (23 537)${\mathrm{\ifmmode^\circ\else\textdegree\fi{}}}_{9/2}$ level by the light of a cw dye laser. The decay of the resonance fluorescence photons emitted in the transition to the ground 4${\mathit{f}}^{4}$6s

^{6}

{\mathit{I}}_{7/2}

level, as a function of the flight distance, was observed. The decay length was scaled into the decay time by the ion velocity, which was determined using the optical resonance itself. The lifetime is 27.7(9) ns.