Journal ArticleDOI
Clarification of the electronic asymmetry of Λ doublets in 3Π electronic states of diatomic molecules
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In this paper, the reflection symmetry of the spatial part of the electronic wave function for 3Π diatomic molecular states is examined carefully for the individual Λ doublet levels by means of an approach presented earlier.Abstract:
The reflection symmetry of the spatial part of the electronic wave function for 3Π diatomic molecular states is examined carefully for the individual Λ doublet levels by means of an approach presented earlier [M. H. Alexander and P. J. Dagdigian, J. Chem. Phys. 80, 4325 (1984)]. The results are: For a 3Π molecule in Hund’s case (a) the electronic wave function in the Ω=1 (F2) e levels will be antisymmetric and, in the the f levels, symmetric with respect to reflection of the spatial coordinates of the electrons in the plane of rotation of the molecule. The electronic wave functions in the F1 and F3 levels will not have a defined plane of symmetry. By contrast, in the Hund’s case (b) high J limit, the electronic wave function in the F1e, F2 f, and F3e levels will be antisymmetric and, in the F1 f, F2e, and F3 f levels, symmetric with respect to reflection. Thus, the symmetry of the wave functions in the F2Λ‐doublet levels reverses with the passage from case (a) to case (b). In the case (b) limit, the main ...read more
Citations
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Journal ArticleDOI
A nomenclature for Λ‐doublet levels in rotating linear molecules
Millard H. Alexander,Peter Andresen,Roger Bacis,Richard Bersohn,Franz Josef Comes,Paul J. Dagdigian,Richard N. Dixon,Robert W. Field,George W. Flynn,K.‐H. Gericke,Edward R. Grant,B. J. Howard,J. R. Huber,D. S. King,James L. Kinsey,K. Kleinermanns,Kozo Kuchitsu,A. C. Luntz,A. J. McCaffery,Brigitte Pouilly,Hanna Reisler,Salman Rosenwaks,Erhard W. Rothe,Moshe Shapiro,John P. Simons,R. Vasudev,John R. Wiesenfeld,Curt Wittig,Richard N. Zare +28 more
TL;DR: In this paper, it was proposed that the two doublet levels of linear molecules with nonzero electronic orbital angular momentum be labeled Λ(A')/Λ' with respect to the reflection of the spatial coordinates of the electrons in the plane of rotation.
Journal ArticleDOI
Energetics and spin‐ and Λ‐doublet selectivity in the infrared multiphoton dissociation HN3(X̃ 1A’)→N2(X 1Σ+g)+NH(X 3Σ−,a 1Δ): Theory
TL;DR: In this paper, the authors investigated the energy and mechanism of the dissociation of ground state HN3(X 1A) into ground state NH(X 3∑+g)+NH(X 4∑−) products induced by multiphoton infrared pumping.
Journal ArticleDOI
Zero kinetic energy electron spectroscopy of molecules: Rotational symmetry selection rules and intensities
TL;DR: In this paper, the rotationally resolved photoelectron spectra for linear and planar molecules are interpreted as transitions into highly excited Rydberg states corresponding to Hund's coupling case.
Journal ArticleDOI
Two-photon formation of NH/ND(A 3Π) in the 193 nm photolysis of ammonia. II. Photolysis of NH2
TL;DR: In this paper, the formation of NH(A 3Π) in the photolysis of NH2 ( X 2B1), internally excited ground state amidogen prepared by the 1 nm photnlysis NH3, has been studied.
Journal ArticleDOI
Spin selectivity in the ultraviolet photodissociation of phosgene
TL;DR: In this paper, the ultraviolet photodissociation of phosgene in its first absorption band 1A2←1A1 was investigated by resonance enhanced multiphoton ionization and time of flight techniques.
References
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Book
Molecular Spectra and Molecular Structure: I. Spectra of Diatomic Molecules
Gerhard Herzberg,S. Mrozowski +1 more
Book
Perturbations in the Spectra of Diatomic Molecules
TL;DR: The theory of rotating-vibrating diatomic molecules with nonzero spin and orbital angular momenta was introduced in this paper, where the authors reveal the interrelationships between apparently unrelated observables, electronic states, and molecules.
Journal ArticleDOI
The labeling of parity doublet levels in linear molecules
John M. Brown,Jon T. Hougen,K.-P. Huber,J.W.C. Johns,I. Kopp,Hélène Lefebvre-Brion,Anthony J. Merer,D. A. Ramsay,J. Rostas,Richard N. Zare +9 more
TL;DR: The rotational energy levels of diatomic and linear polyatomic molecules often occur in closely spaced pairs of opposite parity as discussed by the authors, and the lower levels of each pair usually form a characteristic set (for example, it may be possible to describe them all with a single energy level expression).
Journal ArticleDOI
A Direct Approach for the Reduction of Diatomic Spectra to Molecular Constants for the Construction of RKR Potentials
TL;DR: In this article, a nonlinear fitting procedure is presented that employs all measured line positions and iteratively compares their values with those calculated from numerically diagonalized model Hamiltonians with adjustable molecular constants.
Journal ArticleDOI
State‐selected photodissociation dynamics: Complete characterization of the OH fragment ejected by the HONO Ã state
TL;DR: In this paper, the translational energy, angular distribution, rotational alignment, and internal state distribution (vibration, rotation, spin-orbit components and the Λ doublets) are probed through the OH A-X system.
Related Papers (5)
A nomenclature for Λ‐doublet levels in rotating linear molecules
Millard H. Alexander,Peter Andresen,Roger Bacis,Richard Bersohn,Franz Josef Comes,Paul J. Dagdigian,Richard N. Dixon,Robert W. Field,George W. Flynn,K.‐H. Gericke,Edward R. Grant,B. J. Howard,J. R. Huber,D. S. King,James L. Kinsey,K. Kleinermanns,Kozo Kuchitsu,A. C. Luntz,A. J. McCaffery,Brigitte Pouilly,Hanna Reisler,Salman Rosenwaks,Erhard W. Rothe,Moshe Shapiro,John P. Simons,R. Vasudev,John R. Wiesenfeld,Curt Wittig,Richard N. Zare +28 more