The nonresonant two-photon zero kinetic energy photoelectron spectrum from the electronic ground state of H2S

Ingo Fischer; Andreas Lochschmidt; Andreas Strobel; Gereon Niedner-Schatteburg; Klaus Müller-Dethlefs; Vladimir E. Bondybey

doi:10.1063/1.464036

The nonresonant two-photon zero kinetic energy photoelectron spectrum from the electronic ground state of H₂S

Ingo Fischer, Andreas Lochschmidt, Andreas Strobel, Gereon Niedner-Schatteburg, Klaus Müller-Dethlefs, Vladimir E. Bondybey

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Technical University of Munich

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Abstract

The nonresonant two-photon (1 + 1) ZEKE (zero kinetic energy) photoelectron spectrum fromjhe X^∼1A₁ electronic ground state of H₂S is reported. Complete rotational resolution of the X ^∼2B₁ ground state of the ion was achieved for different temperatures in the jet. The ZEKE spectra show angular momentum transfer up to ΔN=2. The rotational N⁺_Ka+Kc+ ←J″_Ka″Kc″ branching ratios for the low-lying rotational levels were determined. The strongest transitions are those with ΔK_a=K_a⁺ - K_a″=±1 and ΔK_c=K_c⁺-K_c″=0 (type c transitions) but transitions with ΔK_a=0 and ΔK _c=±1 (type a transitions) also show a surprisingly high intensity. Changes in K_a or K_c up to ±3 are observed. The two-photon spectra are compared with those obtained via one-photon VUV photoionization by other authors.

Original language	English
Pages (from-to)	3592-3599
Number of pages	8
Journal	Journal of Chemical Physics
Volume	98
Issue number	5
DOIs	https://doi.org/10.1063/1.464036
State	Published - 1993

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title = "The nonresonant two-photon zero kinetic energy photoelectron spectrum from the electronic ground state of H2S",

abstract = "The nonresonant two-photon (1 + 1) ZEKE (zero kinetic energy) photoelectron spectrum fromjhe X∼1A1 electronic ground state of H2S is reported. Complete rotational resolution of the X ∼2B1 ground state of the ion was achieved for different temperatures in the jet. The ZEKE spectra show angular momentum transfer up to ΔN=2. The rotational N+Ka+Kc+ ←J″Ka″Kc″ branching ratios for the low-lying rotational levels were determined. The strongest transitions are those with ΔKa=Ka+ - Ka″=±1 and ΔKc=Kc+-Kc″=0 (type c transitions) but transitions with ΔKa=0 and ΔK c=±1 (type a transitions) also show a surprisingly high intensity. Changes in Ka or Kc up to ±3 are observed. The two-photon spectra are compared with those obtained via one-photon VUV photoionization by other authors.",

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AU - Fischer, Ingo

AU - Lochschmidt, Andreas

AU - Strobel, Andreas

AU - Niedner-Schatteburg, Gereon

AU - Müller-Dethlefs, Klaus

AU - Bondybey, Vladimir E.

PY - 1993

Y1 - 1993

N2 - The nonresonant two-photon (1 + 1) ZEKE (zero kinetic energy) photoelectron spectrum fromjhe X∼1A1 electronic ground state of H2S is reported. Complete rotational resolution of the X ∼2B1 ground state of the ion was achieved for different temperatures in the jet. The ZEKE spectra show angular momentum transfer up to ΔN=2. The rotational N+Ka+Kc+ ←J″Ka″Kc″ branching ratios for the low-lying rotational levels were determined. The strongest transitions are those with ΔKa=Ka+ - Ka″=±1 and ΔKc=Kc+-Kc″=0 (type c transitions) but transitions with ΔKa=0 and ΔK c=±1 (type a transitions) also show a surprisingly high intensity. Changes in Ka or Kc up to ±3 are observed. The two-photon spectra are compared with those obtained via one-photon VUV photoionization by other authors.

AB - The nonresonant two-photon (1 + 1) ZEKE (zero kinetic energy) photoelectron spectrum fromjhe X∼1A1 electronic ground state of H2S is reported. Complete rotational resolution of the X ∼2B1 ground state of the ion was achieved for different temperatures in the jet. The ZEKE spectra show angular momentum transfer up to ΔN=2. The rotational N+Ka+Kc+ ←J″Ka″Kc″ branching ratios for the low-lying rotational levels were determined. The strongest transitions are those with ΔKa=Ka+ - Ka″=±1 and ΔKc=Kc+-Kc″=0 (type c transitions) but transitions with ΔKa=0 and ΔK c=±1 (type a transitions) also show a surprisingly high intensity. Changes in Ka or Kc up to ±3 are observed. The two-photon spectra are compared with those obtained via one-photon VUV photoionization by other authors.

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The nonresonant two-photon zero kinetic energy photoelectron spectrum from the electronic ground state of H₂S

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