O*(1S) lifetime shortening in solid argon

The shortening of the 1S level lifetime of a rare gas trapped oxygen atom is interpreted according to the following scheme: a perturber disturbs the Oh ideal environment around the oxygen atom and induces a transition dipole moment for the 1S → 1D normally quadrupolar transition. We choose to represent the perturber by a foreign rare gas atom also trapped in the matrix since (i) the rare gas–rare gas interaction potential is generally of good quality and (ii) double doping experiments are easily performed. The distortion induced by the perturber is calculated at any lattice point of the crystal in the framework of the Green static functions. The energies of the level correlating with 1S and of the five levels correlating with 1D are determined together with the transition dipole elements. The bar spectrum is then reconstructed and the lifetime of the 1S level calculated, as a function of the oxygen-perturber distance.

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Deexcitation time shortening for the electronic states of trapped oxygen by matrix doping. I. Theoretical aspects

Giŗardet

Maillard²,

Fournier

1986

The Journal of Chemical Physics

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The UV-visible emission spectra of oxygen and nitrogen in solid hydrogen and deuterium hosts

Brooks

1986

The Journal of Chemical Physics

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Spectra in the wavelength range of 300–600 nm have been acquired during proton-beam irradiation of samples of solid hydrogen and deuterium at 4.2 K. Emission spectra from the transitions A′ 3Δu→X 3Σ−g of O2, 4S–2D of N i, and 1D–1S of O i have been measured and attributed to an air impurity in the sample. Comparison is made of the vibrational constants derived from the molecular bands, the spectral shifts of all features, and the lifetime of the 2p3 2D multiplet of N i obtained in the solid hydrogens with those obtained by matrix isolation studies using N2 and rare gas hosts.

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O(1D) lifetime shortening in SF6 matrix

Mohammed

1990

The Journal of Chemical Physics

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Using a xenon resonance lamp emitting photons at 8.4 eV, CO2 isolated in an SF6 matrix was studied. O(1D) was formed during the photolysis of the matrix sample at 4.5 K. The continuum emission which corresponds to the CO2 (Ã 3B2→X̃ 1∑+g ) transition was also observed. The lifetime of this continuum was measured and found to be 451±25 ms. The lifetime of the O(1D) level was measured for the first time in the SF6 matrix and found to be 780±10 ms. This shortening of the O(1D) level lifetime is attributed to the external heavy atom effect, which enhances the spin–orbit coupling induced by the matrix.

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O*(1S) lifetime shortening in solid argon

Cited by 5 publications

References 16 publications

Deexcitation time shortening for the electronic states of trapped oxygen by matrix doping. I. Theoretical aspects

Deexcitation time shortening for the electronic states of trapped oxygen by matrix doping. I. Theoretical aspects

The UV-visible emission spectra of oxygen and nitrogen in solid hydrogen and deuterium hosts

O(1D) lifetime shortening in SF6 matrix

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