Theory of the angular distribution for ejection of photoelectrons from optically active molecules and molecular negative ions. II

Ritchie, Burke

doi:10.1103/physreva.14.359

Cited by 68 publications

(36 citation statements)

References 11 publications

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“…9,10 Orbital angular momentum ͑ᐉ͒ is no longer a good quantum number, and the vibrational excitation often accompanies the change in electronic state. The application of symmetry arguments can still act as a guide to the nature of the parent molecular orbital.…”

Section: Introductionmentioning

confidence: 99%

Vibronic coupling in the superoxide anion: The vibrational dependence of the photoelectron angular distribution

Duzor

Mbaiwa

Wei

et al. 2010

The Journal of Chemical Physics

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The ZCC model invokes vibrational channel specific "detachment orbitals" and attributes this behavior to coupling of the electronic and nuclear motion in the parent anion. The spatial extent of the model detachment orbital is dependent on the final state of O 2 : the higher the neutral vibrational excitation, the larger the electron binding energy. Although vibronic coupling is ignored in most theoretical treatments of PADs in the direct photodetachment of molecular anions, the present findings clearly show that it can be important. These results represent a benchmark data set for a relatively simple system, upon which to base rigorous tests of more sophisticated models.

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Section: Introductionmentioning

confidence: 99%

Vibronic coupling in the superoxide anion: The vibrational dependence of the photoelectron angular distribution

Duzor

Mbaiwa

Wei

et al. 2010

The Journal of Chemical Physics

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“…Therefore, as follows from formulas (A.3), (A.4), (A.7), and (A.8) reducing bipolar harmonics, these terms should be determined by the right-hand side of (19), in which the pseudoscalar functions (n) (K is odd) differ only in sign from the functions defined in (20). The difference in sign is due to the fact that the above-listed formulas reducing bipolar harmonics contain the factor (-1) K .…”

Section: Odd K (Orientation)mentioning

confidence: 99%

“…To determine the dependence of the quantities dσ K /dΩ present in (6) on the geometric parameters, it suffices to apply in a certain fashion formulas (17)- (20) of the preceding section.…”

Section: Photoionization Of Polarizedmentioning

confidence: 99%

“…The difference in sign is due to the fact that the above-listed formulas reducing bipolar harmonics contain the factor (-1) K . Therefore, to find dσ K /dΩ, it is necessary to subtract from the righthand side of (17) the right-hand side of (19) with the functions defined in (20). The pseudoscalars are expressed via the pseudoscalar dynamic parameters of the optically active molecule with odd l. At K = 1 (first-order orientation), the term with the coefficient D 1, -1 in (20), which formally contains the parameter , should be discarded; the corresponding bipolar harmonic simply does not exist (see (13) at l = -1).…”

Section: Odd K (Orientation)mentioning

confidence: 99%

“…The zeroth-and first-rank irreducible tensors (8) are expressed in terms of the scalar and vector products of the corresponding vectors [12], (10) 2 In the case of unpolarized optically active molecules, the expression for the angular distribution of photoelectrons should contain one more term that determines the effect of circular dichroism [3,20] (see formula (21) below).…”

Section: The General Structure Of the Expression For The Photoionizatmentioning

confidence: 99%

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Theory of spin polarization phenomena in atomic and molecular photoeffects

Agre

2006

Opt. Spectrosc.

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-A compact invariant expression for the angular distribution of photoelectrons formed as a result of photoionization of axisymmetrically polarized atoms and molecules, including optically active molecules, is derived from the general symmetry considerations and using a recently developed bipolar harmonic reduction technique. In the angular distribution of photoelectrons, as well as in the total photoionization cross section, the dependence on all the geometric parameters is separated completely. The polarization of ionizing radiation can be arbitrary, with the partial polarization being specified by the Stokes parameters. The expression for the angular distribution of photoelectrons escaping from an atomic-molecular system oriented in the first order also determines the structure of the expression for the photoionization cross section of an unpolarized system with allowance for the spin polarization of a photoelectron or a photoion with the spin 1/2. The roles played by circular dichroism, chirality, etc., in the process of photoionization of oriented and aligned systems are analyzed in detail.

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