NATO ASI series. Series B : Physics

Observation of Resonant Excess Photon Detachment Via a Window Resonance in the Negative Cesium Ion

Henrick Stepelfeldt, Péter Balling, Harold K. Haugen

Published Jan 1, 1993• 1 citation

Publisher

DOI: 10.1007/978-1-4615-7963-2_41

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NATO ASI series. Series B : Physics

Observation of Resonant Excess Photon Detachment Via a Window Resonance in the Negative Cesium Ion

Henrick Stepelfeldt, Péter Balling, Harold K. Haugen

Published Jan 1, 1993• 1 citation

Publisher

DOI: 10.1007/978-1-4615-7963-2_41

Related papers

Two-Photon Detachment Thresholds of Atomic Negative Ions

Michael Scheer, R. C. Bilodeau, Harold K. Haugen

APSMay 1, 19980 citations

Nonresonant Two Photon Detachment of the Negative Chlorine Ion.

Clifford Trainham

Sep 1, 19870 citations

Multiphoton detachment of negative ions: measurements of two-photon cross sections

Henrik Stapelfeldt, J O Gaardsted, T. Andersen +1 more

Quantum Electronics and Laser Science ConferenceMay 12, 19910 citations

Effect of atomic polarization on two-photon electron detachment from the corresponding negative ions

Павел Абрамович Головинский, B. A. Zon

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Observation of resonant excess-photon detachment via a window resonance in the cesium negative ion

Henrik Stapelfeldt, Harold K. Haugen

Efficient excess-photon detachment to lowest nonvanishing order is observed with long (\ensuremath{\sim}0.7 ns) optical pulses and intensities of \ensuremath{\le}6\ifmmode\times\else\texttimes\fi{} ${10}^{9}$ W/ ${\mathrm{cm}}^{2}$ . A Feshbach (``window'') resonance in ${\mathrm{Cs}}^{\mathrm{\ensuremath{-}}}$ suppresses single-photon detachment, while simultaneously enhancing the probability of absorption of one or more excess photons. The perspectives for future spectroscopic excess-photon detachment and studies of direct two-electron multiphoton detachment are briefly discussed.Efficient excess-photon detachment to lowest nonvanishing order is observed with long (\ensuremath{\sim}0.7 ns) optical pulses and intensities of \ensuremath{\le}6\ifmmode\times\else\texttimes\fi{}${10}^{9}$ W/${\mathrm{cm}}^{2}$. A Feshbach (``window'') resonance in ${\mathrm{Cs}}^{\mathrm{\ensuremath{-}}}$ suppresses single-photon detachment, while simultaneously enhancing the probability of absorption of one or more excess photons. The perspectives for future spectroscopic excess-photon detachment and studies of direct two-electron multiphoton detachment are briefly discussed.

Physical Review LettersNov 2, 199220 citations

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A. Stintz, Xin Miao Zhao, Charlie E. M. Strauss +4 more

We report the measurement of the two-photon detachment spectrum of the $^{1}D^{e}$ resonance of ${\mathrm{H}}^{\ensuremath{-}}$ just below the $n\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2$ threshold. The excess photon detachment resonance fits a Fano profile with energy 10.872(2) eV (relative to ${\mathrm{H}}^{\ensuremath{-}}$ ground state), a width of 0.0105(10) eV, and a shape parameter of $\ensuremath{-}8(2)$. To our knowledge, this describes the first time direct multiphoton excitation of a resonance has been observed in any negative atomic ion.We report the measurement of the two-photon detachment spectrum of the $^{1}D^{e}$ resonance of ${\mathrm{H}}^{\ensuremath{-}}$ just below the $n\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2$ threshold. The excess photon detachment resonance fits a Fano profile with energy 10.872(2) eV (relative to ${\mathrm{H}}^{\ensuremath{-}}$ ground state), a width of 0.0105(10) eV, and a shape parameter of $\ensuremath{-}8(2)$. To our knowledge, this describes the first time direct multiphoton excitation of a resonance has been observed in any negative atomic ion.

Physical Review LettersOct 16, 199544 citations

Efficient excess-photon detachment to lowest nonvanishing order is observed with long (\ensuremath{\sim}0.7 ns) optical pulses and intensities of \ensuremath{\le}6\ifmmode\times\else\texttimes\fi{}

{10}^{9}

{\mathrm{cm}}^{2}

. A Feshbach (``window'') resonance in ${\mathrm{Cs}}^{\mathrm{\ensuremath{-}}}$ suppresses single-photon detachment, while simultaneously enhancing the probability of absorption of one or more excess photons. The perspectives for future spectroscopic excess-photon detachment and studies of direct two-electron multiphoton detachment are briefly discussed.

We report the measurement of the two-photon detachment spectrum of the

^{1}D^{e}

resonance of ${\mathrm{H}}^{\ensuremath{-}}$ just below the

n\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2

threshold. The excess photon detachment resonance fits a Fano profile with energy 10.872(2) eV (relative to ${\mathrm{H}}^{\ensuremath{-}}$ ground state), a width of 0.0105(10) eV, and a shape parameter of $\ensuremath{-}8(2)$. To our knowledge, this describes the first time direct multiphoton excitation of a resonance has been observed in any negative atomic ion.