Lifetimes of the vibronic Ã2A1 states of H2O+ and of the 3Πi (υ′ = 0) state of OH+

  title={Lifetimes of the vibronic {\~A}2A1 states of H2O+ and of the 3$\Pi$i ($\upsilon$′ = 0) state of OH+},
  author={G. R. M{\"o}hlmann and K. K. Bhutani and F. J. de Heer and Seiji Tsurubuchi},
  journal={Chemical Physics},
Nascent rovibrational distributions of OH+ and OD+ in the A 3Πi state produced from the dissociative charge transfer reactions of He+ with H2O and D2O at thermal energy
The thermal‐energy charge transfer reaction of He+ with H2O(D2O) has been investigated by observing the A 3Πi–X 3Σ− emission of OH+(OD+) at low pressures (<3 mTorr). The vibrational distributions in
Fluorescence cross section of the H2O+ Ã 2A1 (0, 7, 0) produced through photoionization of H2O
The cross section for production of the H2O+ A 2A1(0,7,0)→X 2B1(0,0,0) fluorescence through photoionization of H2O has been measured in the 14.5–20.5 eV region. The maximum quantum yield is 1.4×10−3
Photodissociation processes of water vapor below and above the ionization potential
Fluorescence excitation spectra of OH(A), OH(B), OH(C), Lyman α, Balmer α, Balmer β, and H2O+(A) are recorded in H2O in the 9–35 eV photon excitation range. The OH(A) fluorescence quantum yield is
Molecular beam photoelectron spectroscopy and femtosecond intramolecular dynamics of H2O+ and D2O+
The 584 A photoelectron spectra of supersonic molecular beams of H2O and D2O have been obtained with improved resolution. The spectroscopic constants of the X 2B1 and A 2A1 state ions, including ω01,
Observation of the visible absorption spectrum of H2O
The A 2A1–X 2B1 system of H2O+ has been observed, using laser absorption spectroscopy in a velocity‐modulated discharge. A total of 78 transitions between 14 794 and 15 475 cm−1 have been observed
A photoelectron–photoion coincidence study of H2O, D2O, and (H2O)2
Photoelectron–photoion coincidence (PEPICO) data for OH+(OD+), H+(D+), and H2O+ (D2O+) from H2O (D2O) have been obtained in the region of 625–700 A. The PEPICO measurements allow the construction of
Ultraviolet and visible dispersed spectroscopy for the photofragments produced from H2O in the extreme ultraviolet
The photofragmentation of H2O has been studied by fluorescence spectroscopy at photon energies between Ehν=16.9–54.5 eV. The primary photon beam was monochromatized undulator radiation supplied from
A restricted active space (RAS) SCF study of the lifetime of theA3Π state of OH+
SummaryRestricted Active Space (RAS) SCF calculations have been performed of the potential curves for theX3Σ− andA3Π states of the OH+ ion and on the lifetime of thev=0−2 vibrational levels of theA


Radiative and predissociative lifetimes of the A2Σ+ state of OH
Lifetime measurements have been made on the A 2Σ+ state of OH by the delayed coincidence technique in conjunction with an interrupted rf discharge through water vapor. Lifetimes are reported for
Direct measurement of the radiative lifetimes of the A2Σ+ (V′ = 0) states of OH and OD
The fluorescent decay of the A 2Σ+ (V′ = 0) state of OH and OD has been measured for N′ ? 8 for OH and N′ ? 9 for OD using pulsed dye laser excitation and at total gas pressures ? 1 mtorr. For the
Electronic spectrum of H2O
Many bands of the electronic emission spectrum of H2O+, occurring in the wavelength region 4000–7500 A, have been analyzed. These include bands that have been observed in the tails of comets. The
The Renner effect in nearly linear molecule, with application to NH2
The theory developed by Renner, and Pople and Longuet-Higgins, for vibronic interactions in a triatomic molecule has been extended to allow both component states of an electronic II state to have
Lifetimes of Excited Levels in Some Important Ion-molecules Part I: NH+, OH+ and SH+
The spectra of NH+, OH+ and SH+ in the range 3 000-5 000 A have been studied at 0.2-0.4 A FWHM resolution using the High-Frequency Deflection technique. Radiative lifetimes of low-lying excited
Theory of the Renner effect in the NH2 radical
The observations of Dressler and Ramsay on the vibronic absorption spectrum of the NH2 radical are interpreted quantitatively in terms of the Renner effect. The use of a perturbation method leads to
Distortion effects in measurements of long optical lifetimes
An extensive review is given of various effects that might distort decay curves of long-lived atomic and molecular states in measurements using a static gas target. Special emphasis is given to