Lifetimes radiative

Fleninger M, Fenistein S, Durup-Ferguson M, Ferguson E E, Marx R and Mauolaire G 1986 Radiative lifetime for v = 1 and v = 2 ground state NO" ions Chem. Phys. Lett. 131 439-43... 

Time dependent perturbation theory provides an expression for the radiative lifetime of an excited electronic state, given by Tr ... 

Radiation treatment Radiation window Radiative lifetimes Radiative recombination... 

Since the 4550 cm-1 state is the first excited state of PuF6, its radiative lifetime can be determined to be a reasonable approximation by integrating the optical absorption spectrum of PuF6 over the wavelength range where absorption due to the 4550 cm- state occurs. Some uncertainty arises since optical absorption from the next higher state undoubtedly overlaps that due to the 4550 cm-1 state. 

Pure rotational and vibrorotational transitions spontaneous radiative lifetimes... 

Pure rotational transitions, vibrorotational transitions and spontaneous radiative lifetimes have been derived by solving numerically [20] the one-dimensional radial part of the Schrodinger equation for the single X state preceded by construeting an interpolation... 

Spontaneous radiative lifetimes via electric dipole transitions for the A FI—>X Z+and... 

Table 7. Spontaneous radiative lifetimes Xy j (s) of the A and A 11 bands via A->A in and A IH- X l + electric dipolar transitions...

Lx>ng radiative lifetimes of metastable states support the high density of these particles in slightly ionized plasma, or in excited gas. Thus, according to Fugal and Pakhomov [18, 19] the density of metastable atoms of helium at pressure of the order of a few Torrs, at temperatures ranging from 4 to 300 K, is about two orders of magnitude above the density of electrons. The density of metastable atoms and molecules in... 

Particle State Excitation energy, eV Radiative lifetime, s ... 

This result is further supported by the very short 130 + 10 ps lifetime combined with the remarkably high quantum yield of 0.43, both observed upon excitation at 335 nm, near the long-wavelength edge of the absorption band. These values combine to a radiative lifetime of 300 ps, which corresponds (33a) to an oscillator strength of 1.8. Similarly short emission lifetimes have been observed for other poly(di-n-alkylsilanes) di-n-pentyl, 200 ps, di-n-decyl, 150 ps. The average oscillator... 

As stated in Chapter 1, transitions involving a change in multiplicity are spin forbidden. However, for reasons which we will consider later, such transitions do indeed occur although with very low transition probabilities in most cases. The intensity of an absorption corresponding to a transition from the ground state S0 to the lowest triplet state Tx is related to the triplet radiative lifetime t ° by the following equation[Pg.114]

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