A nomenclature for Λ-doublet levels in rotating linear molecules

M. H. Alexander; P. Andresen; R. Bacis; R. Bersohn; F. J. Comes; P. J. Dagdigian; R. N. Dixon; R. W. Field; G. W. Flynn; K. H. Gericke; E. R. Grant; B. J. Howard; J. R. Huber; D. S. King; J. L. Kinsey; K. Kleinermanns; K. Kuchitsu; A. C. Luntz; A. J. McCaffery; B. Pouilly; H. Reisler; S. Rosenwaks; E. W. Rothe; M. Shapiro; J. P. Simons; R. Vaeudev; J. R. Wiesenfeld; C. Wittig; R. N. Zare

doi:10.1063/1.455121

A nomenclature for Λ-doublet levels in rotating linear molecules

M. H. Alexander, P. Andresen, R. Bacis, R. Bersohn, F. J. Comes, P. J. Dagdigian, R. N. Dixon, R. W. Field, G. W. Flynn, K. H. Gericke, E. R. Grant, B. J. Howard, J. R. Huber, D. S. King, J. L. Kinsey, K. Kleinermanns, K. Kuchitsu, A. C. Luntz, A. J. McCaffery, B. PouillyH. Reisler, S. Rosenwaks, E. W. Rothe, M. Shapiro, J. P. Simons, R. Vaeudev, J. R. Wiesenfeld, C. Wittig, R. N. Zare

Department of Physics

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Abstract

It is proposed that the two Λ-doublet levels of linear molecules with nonzero electronic orbital angular momentum be labeled Λ(A′) and Λ(A″), e.g., Π(A′) and Π(A″) for Π states, etc., according to the following prescription: All series of levels in which the electronic wave function at high J is symmetric with reflection of the spatial coordinates of the electrons in the plane of rotation will be designated Λ(A′) for all values of J, and all those for which the electronic wave function is antisymmetric with respect to reflection will be denoted Λ(A″).lt is emphasized that this notation is meant to supplement, and not replace, the accepted spectroscopic e/f labeling and the parity quantum number. The utility of the Λ(A′)/Λ(A″) notation is that it is of most relevance in the mechanistic interpretation of reactive or photodissociative processes involving open-shell molecules.

Original language	English
Pages (from-to)	1749-1753
Number of pages	5
Journal	Journal of Chemical Physics
Volume	89
Issue number	4
DOIs	https://doi.org/10.1063/1.455121
State	Published - 1 Jan 1988

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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Alexander, M. H., Andresen, P., Bacis, R., Bersohn, R., Comes, F. J., Dagdigian, P. J., Dixon, R. N., Field, R. W., Flynn, G. W., Gericke, K. H., Grant, E. R., Howard, B. J., Huber, J. R., King, D. S., Kinsey, J. L., Kleinermanns, K., Kuchitsu, K., Luntz, A. C., McCaffery, A. J., ... Zare, R. N. (1988). A nomenclature for Λ-doublet levels in rotating linear molecules. Journal of Chemical Physics, 89(4), 1749-1753. https://doi.org/10.1063/1.455121

@article{fe0907da59e040f483d852186b465a5f,

title = "A nomenclature for Λ-doublet levels in rotating linear molecules",

abstract = "It is proposed that the two Λ-doublet levels of linear molecules with nonzero electronic orbital angular momentum be labeled Λ(A′) and Λ(A″), e.g., Π(A′) and Π(A″) for Π states, etc., according to the following prescription: All series of levels in which the electronic wave function at high J is symmetric with reflection of the spatial coordinates of the electrons in the plane of rotation will be designated Λ(A′) for all values of J, and all those for which the electronic wave function is antisymmetric with respect to reflection will be denoted Λ(A″).lt is emphasized that this notation is meant to supplement, and not replace, the accepted spectroscopic e/f labeling and the parity quantum number. The utility of the Λ(A′)/Λ(A″) notation is that it is of most relevance in the mechanistic interpretation of reactive or photodissociative processes involving open-shell molecules.",

author = "Alexander, {M. H.} and P. Andresen and R. Bacis and R. Bersohn and Comes, {F. J.} and Dagdigian, {P. J.} and Dixon, {R. N.} and Field, {R. W.} and Flynn, {G. W.} and Gericke, {K. H.} and Grant, {E. R.} and Howard, {B. J.} and Huber, {J. R.} and King, {D. S.} and Kinsey, {J. L.} and K. Kleinermanns and K. Kuchitsu and Luntz, {A. C.} and McCaffery, {A. J.} and B. Pouilly and H. Reisler and S. Rosenwaks and Rothe, {E. W.} and M. Shapiro and Simons, {J. P.} and R. Vaeudev and Wiesenfeld, {J. R.} and C. Wittig and Zare, {R. N.}",

year = "1988",

month = jan,

day = "1",

doi = "10.1063/1.455121",

language = "English",

volume = "89",

pages = "1749--1753",

journal = "Journal of Chemical Physics",

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Alexander, MH, Andresen, P, Bacis, R, Bersohn, R, Comes, FJ, Dagdigian, PJ, Dixon, RN, Field, RW, Flynn, GW, Gericke, KH, Grant, ER, Howard, BJ, Huber, JR, King, DS, Kinsey, JL, Kleinermanns, K, Kuchitsu, K, Luntz, AC, McCaffery, AJ, Pouilly, B, Reisler, H, Rosenwaks, S, Rothe, EW, Shapiro, M, Simons, JP, Vaeudev, R, Wiesenfeld, JR, Wittig, C & Zare, RN 1988, 'A nomenclature for Λ-doublet levels in rotating linear molecules', Journal of Chemical Physics, vol. 89, no. 4, pp. 1749-1753. https://doi.org/10.1063/1.455121

TY - JOUR

T1 - A nomenclature for Λ-doublet levels in rotating linear molecules

AU - Alexander, M. H.

AU - Andresen, P.

AU - Bacis, R.

AU - Bersohn, R.

AU - Comes, F. J.

AU - Dagdigian, P. J.

AU - Dixon, R. N.

AU - Field, R. W.

AU - Flynn, G. W.

AU - Gericke, K. H.

AU - Grant, E. R.

AU - Howard, B. J.

AU - Huber, J. R.

AU - King, D. S.

AU - Kinsey, J. L.

AU - Kleinermanns, K.

AU - Kuchitsu, K.

AU - Luntz, A. C.

AU - McCaffery, A. J.

AU - Pouilly, B.

AU - Reisler, H.

AU - Rosenwaks, S.

AU - Rothe, E. W.

AU - Shapiro, M.

AU - Simons, J. P.

AU - Vaeudev, R.

AU - Wiesenfeld, J. R.

AU - Wittig, C.

AU - Zare, R. N.

PY - 1988/1/1

Y1 - 1988/1/1

N2 - It is proposed that the two Λ-doublet levels of linear molecules with nonzero electronic orbital angular momentum be labeled Λ(A′) and Λ(A″), e.g., Π(A′) and Π(A″) for Π states, etc., according to the following prescription: All series of levels in which the electronic wave function at high J is symmetric with reflection of the spatial coordinates of the electrons in the plane of rotation will be designated Λ(A′) for all values of J, and all those for which the electronic wave function is antisymmetric with respect to reflection will be denoted Λ(A″).lt is emphasized that this notation is meant to supplement, and not replace, the accepted spectroscopic e/f labeling and the parity quantum number. The utility of the Λ(A′)/Λ(A″) notation is that it is of most relevance in the mechanistic interpretation of reactive or photodissociative processes involving open-shell molecules.

AB - It is proposed that the two Λ-doublet levels of linear molecules with nonzero electronic orbital angular momentum be labeled Λ(A′) and Λ(A″), e.g., Π(A′) and Π(A″) for Π states, etc., according to the following prescription: All series of levels in which the electronic wave function at high J is symmetric with reflection of the spatial coordinates of the electrons in the plane of rotation will be designated Λ(A′) for all values of J, and all those for which the electronic wave function is antisymmetric with respect to reflection will be denoted Λ(A″).lt is emphasized that this notation is meant to supplement, and not replace, the accepted spectroscopic e/f labeling and the parity quantum number. The utility of the Λ(A′)/Λ(A″) notation is that it is of most relevance in the mechanistic interpretation of reactive or photodissociative processes involving open-shell molecules.

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U2 - 10.1063/1.455121

DO - 10.1063/1.455121

M3 - Article

AN - SCOPUS:0001370979

SN - 0021-9606

VL - 89

SP - 1749

EP - 1753

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

IS - 4

ER -

A nomenclature for Λ-doublet levels in rotating linear molecules

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