Bulletin of the Lebedev Physics Institute

Study of the Photoionization Spectrum in the Second Step of the Lutetium Photoionization Scheme

Aleksei B D'yachkov, Aleksei A. Gorkunov, Anton V. Labozin, Sergei M. Mironov, Valerii A Firsov, Gleb O. Tsvetkov, Vladislav Ya. Panchenko

Published Aug 1, 2023• 4 citations

Publisher

Abstract

The photoionization spectrum in the second step of the three-step lutetium photoionization scheme 5d6s2 2D3/2 – 5d6s6p4 $$F_{{5/2}}^{{\text{o}}}$$ – 5d6s7s4D3/2 – (53 375 cm–1 $$)_{{1/2}}^{{\text{o}}}$$ has been measured. The effect of two-photon transitions has been studied experimentally compared to one-photon transitions.

DOI: 10.3103/s106833562314004x

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Bulletin of the Lebedev Physics Institute

Study of the Photoionization Spectrum in the Second Step of the Lutetium Photoionization Scheme

Aleksei B D'yachkov, Aleksei A. Gorkunov, Anton V. Labozin, Sergei M. Mironov, Valerii A Firsov, Gleb O. Tsvetkov, Vladislav Ya. Panchenko

Published Aug 1, 2023• 4 citations

Publisher

Abstract

The photoionization spectrum in the second step of the three-step lutetium photoionization scheme 5d6s2 2D3/2 – 5d6s6p4

F_{{5/2}}^{{\text{o}}}

– 5d6s7s4D3/2 – (53 375 cm–1

)_{{1/2}}^{{\text{o}}}

has been measured. The effect of two-photon transitions has been studied experimentally compared to one-photon transitions.

DOI: 10.3103/s106833562314004x

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The hyperfine structure of transitions in the three-step scheme 5d6s22D3/2–5d6s6p4F $_{{5/2}}^{^\circ }$ –5d6s7s4D3/2– (53 375 cm–1) $_{{1/2}}^{^\circ }$ of lutetium ionization is studied for 175Lu, 176Lu, and 177Lu isotopes using the photoionization laser spectroscopy method. Values of the magnetic dipole (A) and electric quadrupole (B) interaction constants are determined, as well as the energies, the isotope shifts, and the radiative lifetimes for the 5d6s7s4D3/2 and (53 375 cm–1) $_{{1/2}}^{^\circ }$ levels.The hyperfine structure of transitions in the three-step scheme 5d6s22D3/2–5d6s6p4F $$_{{5/2}}^{^\circ }$$ –5d6s7s4D3/2– (53 375 cm–1) $$_{{1/2}}^{^\circ }$$ of lutetium ionization is studied for 175Lu, 176Lu, and 177Lu isotopes using the photoionization laser spectroscopy method. Values of the magnetic dipole (A) and electric quadrupole (B) interaction constants are determined, as well as the energies, the isotope shifts, and the radiative lifetimes for the 5d6s7s4D3/2 and (53 375 cm–1) $$_{{1/2}}^{^\circ }$$ levels.

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The splitting of the transition from a discrete to an autoionization state, used in a three-step photoionization scheme of lutetium 5d6s2 2D3/2–5d6s6p ${}^{4}F_{{5/2}}^{^\circ }$ –5d6s7s 4D3/2–(53375 cm–1) $_{{1/2}}^{^\circ }$ has been studied. The splitting is proportional to the square root of the intensity, which corresponds to the Autler–Townes effect.The splitting of the transition from a discrete to an autoionization state, used in a three-step photoionization scheme of lutetium 5d6s2 2D3/2–5d6s6p $${}^{4}F_{{5/2}}^{^\circ }$$ –5d6s7s 4D3/2–(53375 cm–1) $$_{{1/2}}^{^\circ }$$ has been studied. The splitting is proportional to the square root of the intensity, which corresponds to the Autler–Townes effect.

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The photoionization spectrum in the second step of the three-step lutetium photoionization scheme 5d6s2 2D3/2 – 5d6s6p4

F_{{5/2}}^{{\text{o}}}

– 5d6s7s4D3/2 – (53 375 cm–1

)_{{1/2}}^{{\text{o}}}

has been measured. The effect of two-photon transitions has been studied experimentally compared to one-photon transitions.

The hyperfine structure of transitions in the three-step scheme 5d6s22D3/2–5d6s6p4F

_{{5/2}}^{^\circ }

–5d6s7s4D3/2– (53 375 cm–1)

_{{1/2}}^{^\circ }

of lutetium ionization is studied for 175Lu, 176Lu, and 177Lu isotopes using the photoionization laser spectroscopy method. Values of the magnetic dipole (A) and electric quadrupole (B) interaction constants are determined, as well as the energies, the isotope shifts, and the radiative lifetimes for the 5d6s7s4D3/2 and (53 375 cm–1)

_{{1/2}}^{^\circ }

levels.

The splitting of the transition from a discrete to an autoionization state, used in a three-step photoionization scheme of lutetium 5d6s2 2D3/2–5d6s6p

{}^{4}F_{{5/2}}^{^\circ }

–5d6s7s 4D3/2–(53375 cm–1)

_{{1/2}}^{^\circ }

has been studied. The splitting is proportional to the square root of the intensity, which corresponds to the Autler–Townes effect.