Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Laser-influenced fluorescence spectroscopy of rubidium atoms and mercury molecules.

J. Supronowicz

Published Jan 1, 1985• 0 citations
OpenAlex

Abstract

Cross sections for 6^D, 7^D and 8^0 fine-structure mixing in Rb, induced in collisions with various ground-state atoms and N2 molecules, have been determined using methods of atomic fluorescence.Rb vapour, pure or mixed with a buffer gas, was irradiated in a glass fluorescence cell with pulses of radiation from a N2 laser-pumped dye laser, populating a fine-structure state by two-photon absorption.The resulting fluorescence included a direct component emitted in the decay of .the optically excited state and a sensitized component due to the col1isional1y populated fine-structure state.Measure ments of relative intensities of the two components in relation to buffer gas (or Rb vapour) pressure yielded the following cross sections.-14 2 Inelastic Cross sections (10 cm ) process Rb He Ne Ar Kr Xe I would like to express sincere thanks to Professor L.

Related papers

Fine-structure mixing in 72D and 82D Rb atoms, induced in collisions with ground-state atoms and molecules

J. Supronowicz, J. B. Atkinson, L. Krause

Cross sections for ${7}^{2}D$ and ${8}^{2}D$ fine-structure mixing in Rb, induced by collisions with various ground-state atoms and ${\mathrm{N}}_{2}$ molecules, have been determined using methods of atomic fluorescence. Rb vapor, pure or mixed with a buffer gas, was irradiated in a glass fluorescence cell with pulses of radiation from a ${\mathrm{N}}_{2}$ laser-pumped dye laser, populating a $^{2}D$ fine-structure state by two-photon absorption. The resulting fluorescence included a direct component arising from the optically excited state and a sensitized component due to the collisionally populated fine-structure state. Measurements of relative intensities of the two components in relation to buffer-gas pressure yielded the following cross sections (in units of ${10}^{\ensuremath{-}14}$ ${\mathrm{cm}}^{2}$): $Q({7}^{2}{D}_{\frac{3}{2}}\ensuremath{\rightarrow}{7}^{2}{D}_{\frac{5}{2}})=14.1,15.5,\mathrm{and}10.0$; $Q({7}^{2}{D}_{\frac{3}{2}}\ensuremath{\leftarrow}{7}^{2}{D}_{\frac{5}{2}})=9.0,10.5,\mathrm{and}6.9$, for Kr, Xe, and ${\mathrm{N}}_{2}$, respectively; $Q({8}^{2}{D}_{\frac{3}{2}}\ensuremath{\rightarrow}{8}^{2}{D}_{\frac{5}{2}})=8.9,4.9,12.4,24.9,25.8,12.1,\mathrm{and}43.1$; $Q({8}^{2}{D}_{\frac{3}{2}}\ensuremath{\leftarrow}{8}^{2}{D}_{\frac{5}{2}})=5.8,3.2,9.4,15.1,17.6,8.3,\mathrm{and}28.5$, for He, Ne, Ar, Kr, Xe, ${\mathrm{N}}_{2}$, and Rb, respectively. Cross sections for the effective depopulation of the $^{2}D$ states were also determined.

Physical Review A•Jul 1, 1984•25 citations

82D3/2 ↔ 82D5/2 excitation transfer in rubidium induced in collisions with ground-state Rb atoms

Małgorzata Głódź, J. B. Atkinson, L. Krause

Cross sections for inelastic transfer between the 82D3/2 and 82D5/2 fine-structure states in rubidium, induced in resonant collisions with ground-state Rb atoms, have been determined using an experimental method involving two-photon excitation of atomic fluorescence. Rubidium vapor in a fluorescence cell was irradiated with pulses of 641 nm radiation from a N2 laser-pumped dye-laser tuned to excite one of the 82D states. The resulting fluorescence included the direct component originating from the optically excited state and a sensitized component arising from the other fine-structure state populated by collisions. Relative intensities of the fluorescent components, determined by photon-counting techniques, yielded the cross sections for excitation transfer: Q(2D3/2 → 2D5/2) = 8.1 × 10−13 cm2; Q(2D3/2 ← 2D5/2) = 5.5 × 1013 cm2; as well as [Formula: see text], the effective quenching cross section. The excitation transfer cross sections which are considered accurate to within ±20% are in the ratio predicted by the principle of detailed balancing.

Canadian Journal of Physics•Apr 1, 1981•8 citations

7D322−7D522 excitation transfer in rubidium induced in collisions with ground-state Rb and noble-gas atoms

J. Wolnikowski, J. B. Atkinson, J. Supronowicz +1 more

Cross sections for $7^{2}D_{\frac{3}{2}}\ensuremath{\leftrightarrow}7^{2}D_{\frac{5}{2}}$ transfer in Rb, induced in collisions with He, Ne, Ar, and with ground-state Rb atoms, have been determined using methods of atomic fluorescence. Rb vapor, pure or mixed with a noble gas, was irradiated in a glass fluorescence cell with pulses of 660-nm radiation from a ${\mathrm{N}}_{2}$-laser-pumped dye laser, populating one of the $^{2}D$ states by two-photon absorption. The resulting fluorescence included a direct component emitted in the decay of the optically excited state and a sensitized component arising from the collisionally populated state. Relative intensities of the components yielded the cross sections for $7^{2}D$ mixing: $Q(^{2}D_{\frac{3}{2}}\ensuremath{\rightarrow}^{2}D_{\frac{5}{2}})=8.8,6.5,10.4, \mathrm{and} 30$; $Q(^{2}D_{\frac{3}{2}}\ensuremath{\leftarrow}^{2}D_{\frac{5}{2}})=5.8,4.0,6.9, \mathrm{and} 18$, in units of ${10}^{\ensuremath{-}14}$ ${\mathrm{cm}}^{2}$ for He, Ne, Ar, and Rb, respectively. Cross sections for the effective quenching of the $^{2}D$ states were also determined.

Physical Review A•May 1, 1982•13 citations

6D2 fine-structure mixing in rubidium induced in collisions with ground-state Rb and noble-gas atoms and with N2 molecules

J. Supronowicz, J. B. Atkinson, L. Krause

The following cross sections for $6^{2}D_{\frac{3}{2}}\ensuremath{\leftrightarrow}6^{2}D_{\frac{5}{2}}$ fine-structure mixing in Rb, induced in collisions with ground-state Rb and noble-gas atoms and with ${\mathrm{N}}_{2}$ molecules, have been measured using previously described methods of atomic fluorescence spectroscopy: $Q(6^{2}D_{\frac{3}{2}}\ensuremath{\rightarrow}6^{2}D_{\frac{5}{2}})=17.3, 6.6, 6.1, 5.3, 8.5, \mathrm{and} 6.4$; $Q(6^{2}D_{\frac{3}{2}}\ensuremath{\leftarrow}6^{2}D_{\frac{5}{2}})=11.6, 4.5, 4.1, 3.6, 5.5, \mathrm{and} 4.1$, for Rb, He, Ne, Ar, Kr, and ${\mathrm{N}}_{2}$, respectively, in units of ${10}^{\ensuremath{-}14}$ ${\mathrm{cm}}^{2}$. Upper bounds of cross sections for the effective depopulation of the $6^{2}D$ states were also determined.

Physical Review A•Apr 1, 1985•12 citations

Fine-structure mixing of Hg 6s6d states by collisions with ground-state Hg and Ar atoms, and N2molecules

R. J. Niefer, Murray R. Darrach, J. B. Atkinson +1 more

Excitation transfer between 6s6d Hg fine-structure states, induced by collisions with Hg, Ar and N 2 , was studied using methods of fluorescence spectroscopy in a vapour cell. Hg vapour, pure or mixed with Ar or N 2 , was excited to the 6 1 D 2 or 6 3 D 2 state by two-photon absorption and the relative intensities of the fluorescence components emitted from the radiatively and collisionally populated states were determined using a monochromator and a photomultiplier. Measurements of the fluorescent intensity ratios in relation to the density of the collision partner yielded the total thermally averaged cross sections for the transfers 1 D 2 to 3 D 2 , 1 D 2 to 3 D 3 3 D 2 to 3 D 3 , and 3 D 2 to 1 D 2 , with Hg, Ar and N 2 as collision partners.

Journal of Physics B Atomic and Molecular Physics•Feb 14, 1987•6 citations

Sensitized Fluorescence in Vapors of Alkali Atoms. XIII. 62P1/2−62P3/2 Excitation Transfer in Rubidium, Induced in Collisions with Noble Gas Atoms

I. N. Siara, E. S. Hrycyshyn, L. Krause

The cross sections for excitation transfer between the 62P fine-structure substates in rubidium, induced in collisions with noble gas atoms, have been determined in a series of sensitized fluorescence experiments. Mixtures of rubidium vapor and noble gases at pressures varying in the range 0–5 Torr were irradiated with each component of the second 2P rubidium doublet in turn and the following cross sections for 2P mixing were obtained from measurements of sensitised-to-resonance fluorescent intensity ratios. Rb–He: Q12(2P1/2 → 2P3/2) = 29.3 Å2; Q21(2P1/2 ← 2P3/2) = 19.0 Å2. Rb–Ne: Q12 = 10.3 Å2; Q21 = 6.4 Å2. Rb–Ar: Q12 = 24.0 Å2; Q21 = 14.9 Å2. Rb–Kr: Q12 = 23.2 Å2; Q21 = 14.6 Å2. Rb–Xe: Q12 = 43.9 Å2; Q21 = 27.7 Å2 In their dependence on the magnitude of the fine-structure splitting, the values are consistent with previously determined cross sections for mixing in the first and third 2P doublets of alkali atoms.

Canadian Journal of Physics•Aug 15, 1972•19 citations
Cross sections for 6^D, 7^D and 8^0 fine-structure mixing in Rb, induced in collisions with various ground-state atoms and N2 molecules, have been determined using methods of atomic fluorescence.Rb vapour, pure or mixed with a buffer gas, was irradiated in a glass fluorescence cell with pulses of radiation from a N2 laser-pumped dye laser, populating a fine-structure state by two-photon absorption.The resulting fluorescence included a direct component emitted in the decay of .the optically excited state and a sensitized component due to the col1isional1y populated fine-structure state.Measure ments of relative intensities of the two components in relation to buffer gas (or Rb vapour) pressure yielded the following cross sections.-14 2 Inelastic Cross sections (10 cm ) process Rb He Ne Ar Kr Xe I would like to express sincere thanks to Professor L.
Cross sections for 72D{7}^{2}D72D and 82D{8}^{2}D82D fine-structure mixing in Rb, induced by collisions with various ground-state atoms and N2{\mathrm{N}}_{2}N2​ molecules, have been determined using methods of atomic fluorescence. Rb vapor, pure or mixed with a buffer gas, was irradiated in a glass fluorescence cell with pulses of radiation from a N2{\mathrm{N}}_{2}N2​ laser-pumped dye laser, populating a 2D^{2}D2D fine-structure state by two-photon absorption. The resulting fluorescence included a direct component arising from the optically excited state and a sensitized component due to the collisionally populated fine-structure state. Measurements of relative intensities of the two components in relation to buffer-gas pressure yielded the following cross sections (in units of ${10}^{\ensuremath{-}14}$ cm2{\mathrm{cm}}^{2}cm2): $Q({7}^{2}{D}_{\frac{3}{2}}\ensuremath{\rightarrow}{7}^{2}{D}_{\frac{5}{2}})=14.1,15.5,\mathrm{and}10.0$; $Q({7}^{2}{D}_{\frac{3}{2}}\ensuremath{\leftarrow}{7}^{2}{D}_{\frac{5}{2}})=9.0,10.5,\mathrm{and}6.9$, for Kr, Xe, and N2{\mathrm{N}}_{2}N2​, respectively; $Q({8}^{2}{D}_{\frac{3}{2}}\ensuremath{\rightarrow}{8}^{2}{D}_{\frac{5}{2}})=8.9,4.9,12.4,24.9,25.8,12.1,\mathrm{and}43.1$; $Q({8}^{2}{D}_{\frac{3}{2}}\ensuremath{\leftarrow}{8}^{2}{D}_{\frac{5}{2}})=5.8,3.2,9.4,15.1,17.6,8.3,\mathrm{and}28.5$, for He, Ne, Ar, Kr, Xe, N2{\mathrm{N}}_{2}N2​, and Rb, respectively. Cross sections for the effective depopulation of the 2D^{2}D2D states were also determined.
Cross sections for inelastic transfer between the 82D3/2 and 82D5/2 fine-structure states in rubidium, induced in resonant collisions with ground-state Rb atoms, have been determined using an experimental method involving two-photon excitation of atomic fluorescence. Rubidium vapor in a fluorescence cell was irradiated with pulses of 641 nm radiation from a N2 laser-pumped dye-laser tuned to excite one of the 82D states. The resulting fluorescence included the direct component originating from the optically excited state and a sensitized component arising from the other fine-structure state populated by collisions. Relative intensities of the fluorescent components, determined by photon-counting techniques, yielded the cross sections for excitation transfer: Q(2D3/2 → 2D5/2) = 8.1 × 10−13 cm2; Q(2D3/2 ← 2D5/2) = 5.5 × 1013 cm2; as well as [Formula: see text], the effective quenching cross section. The excitation transfer cross sections which are considered accurate to within ±20% are in the ratio predicted by the principle of detailed balancing.
Cross sections for $7^{2}D_{\frac{3}{2}}\ensuremath{\leftrightarrow}7^{2}D_{\frac{5}{2}}$ transfer in Rb, induced in collisions with He, Ne, Ar, and with ground-state Rb atoms, have been determined using methods of atomic fluorescence. Rb vapor, pure or mixed with a noble gas, was irradiated in a glass fluorescence cell with pulses of 660-nm radiation from a N2{\mathrm{N}}_{2}N2​-laser-pumped dye laser, populating one of the 2D^{2}D2D states by two-photon absorption. The resulting fluorescence included a direct component emitted in the decay of the optically excited state and a sensitized component arising from the collisionally populated state. Relative intensities of the components yielded the cross sections for 72D7^{2}D72D mixing: $Q(^{2}D_{\frac{3}{2}}\ensuremath{\rightarrow}^{2}D_{\frac{5}{2}})=8.8,6.5,10.4, \mathrm{and} 30$; $Q(^{2}D_{\frac{3}{2}}\ensuremath{\leftarrow}^{2}D_{\frac{5}{2}})=5.8,4.0,6.9, \mathrm{and} 18$, in units of ${10}^{\ensuremath{-}14}$ cm2{\mathrm{cm}}^{2}cm2 for He, Ne, Ar, and Rb, respectively. Cross sections for the effective quenching of the 2D^{2}D2D states were also determined.
The following cross sections for $6^{2}D_{\frac{3}{2}}\ensuremath{\leftrightarrow}6^{2}D_{\frac{5}{2}}$ fine-structure mixing in Rb, induced in collisions with ground-state Rb and noble-gas atoms and with N2{\mathrm{N}}_{2}N2​ molecules, have been measured using previously described methods of atomic fluorescence spectroscopy: $Q(6^{2}D_{\frac{3}{2}}\ensuremath{\rightarrow}6^{2}D_{\frac{5}{2}})=17.3, 6.6, 6.1, 5.3, 8.5, \mathrm{and} 6.4$; $Q(6^{2}D_{\frac{3}{2}}\ensuremath{\leftarrow}6^{2}D_{\frac{5}{2}})=11.6, 4.5, 4.1, 3.6, 5.5, \mathrm{and} 4.1$, for Rb, He, Ne, Ar, Kr, and N2{\mathrm{N}}_{2}N2​, respectively, in units of ${10}^{\ensuremath{-}14}$ cm2{\mathrm{cm}}^{2}cm2. Upper bounds of cross sections for the effective depopulation of the 62D6^{2}D62D states were also determined.
Excitation transfer between 6s6d Hg fine-structure states, induced by collisions with Hg, Ar and N 2 , was studied using methods of fluorescence spectroscopy in a vapour cell. Hg vapour, pure or mixed with Ar or N 2 , was excited to the 6 1 D 2 or 6 3 D 2 state by two-photon absorption and the relative intensities of the fluorescence components emitted from the radiatively and collisionally populated states were determined using a monochromator and a photomultiplier. Measurements of the fluorescent intensity ratios in relation to the density of the collision partner yielded the total thermally averaged cross sections for the transfers 1 D 2 to 3 D 2 , 1 D 2 to 3 D 3 3 D 2 to 3 D 3 , and 3 D 2 to 1 D 2 , with Hg, Ar and N 2 as collision partners.
The cross sections for excitation transfer between the 62P fine-structure substates in rubidium, induced in collisions with noble gas atoms, have been determined in a series of sensitized fluorescence experiments. Mixtures of rubidium vapor and noble gases at pressures varying in the range 0–5 Torr were irradiated with each component of the second 2P rubidium doublet in turn and the following cross sections for 2P mixing were obtained from measurements of sensitised-to-resonance fluorescent intensity ratios. Rb–He: Q12(2P1/2 → 2P3/2) = 29.3 Å2; Q21(2P1/2 ← 2P3/2) = 19.0 Å2. Rb–Ne: Q12 = 10.3 Å2; Q21 = 6.4 Å2. Rb–Ar: Q12 = 24.0 Å2; Q21 = 14.9 Å2. Rb–Kr: Q12 = 23.2 Å2; Q21 = 14.6 Å2. Rb–Xe: Q12 = 43.9 Å2; Q21 = 27.7 Å2 In their dependence on the magnitude of the fine-structure splitting, the values are consistent with previously determined cross sections for mixing in the first and third 2P doublets of alkali atoms.