Photodissociation to fragments with electronic angular momentum
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Photodissociation to fragments with electronic angular momentum influence on cross sections and angular distributions by Sherwin J. Singer

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Published in 1984 .
Written in English


Book details:

Edition Notes

Statementby Sherwin J. Singer.
Classifications
LC ClassificationsMicrofilm 84/2275 (Q)
The Physical Object
FormatMicroform
Paginationvii, 197 p. : ill.
Number of Pages197
ID Numbers
Open LibraryOL2960595M
LC Control Number84204535

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  In a typical photodissociation experiment, the fragments are detected far from the dissociation point. At the detection point, the particles are characterized by their momentum, which is detected by velocity map imaging,. Comparable information can be calculated by the asymptotic momentum, amplitude, and direction, at far internuclear : Bar Ezra, Shimshon Kallush, Ronnie Kosloff. photodissociation into two fragments of which one carries an angular momentum j. Explicit expressions in terms of the transition matrix elements for electronic excitation into the final dissociative states are given in the axial-recoil limit and for different photon polarizations. The.   We present a general theory of the photodissociation of diatomic molecules in the presence of nonadiabatic interactions between dissociative electronic states. Nonadiabatic couplings exert a profound influence on the photodissociation process when the molecule dissociates to atoms with nonvanishing electronic angular momentum, even if there are no ordinary curve by: Non-vanishing fragment electronic angular momentum implies the existence of non-adiabatic interactions between adiabatic moleular electronic states that become degenerate at large internuclear separations Our generalized theory of photodissociation is used to illustrate how cross sections and angular distributions for individual fine structure levels can be used to probe the presence ot non .

  Vol number 2,3 CHEMICAL PHYSICS LETTERS 15 November FRAGMENT ANGULAR DISTRIBUTIONS FROM PHOTODISSOCIATION OF POLYATOMIC MOLECULES Yehuda B. BAND + Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, Israel and Michael D. MORSE ~ and Karl F. FREED:~ James Franck Institute and the . fragments on the direction of ejection k, is studied quantum mechanically for molecular photodissociation into two fragments of which one carries an angular momentum j. Explicit expressions in terms of the transition matrix elements for electronic excitation into the final. The low energy photodissociation cross section and angular distributions are shown to exhibit resonances which arise in part due to non-adiabatic spin–orbitand Coriolis couplings. the angular distribution of the alignment and orientation of the angular momentum in question. In the present case of the photodissociation of HBr, this would be the combined spin-orbit angular momentum of the Br atom or the spin angular momentum of the hydrogen atom. In the photodissociation of HCl30 and HBr,25 it has been shown, by using such.

yielding only one fragment with nonzero angular momen-tum, Mo and Suzuki have very recently discussed the situa-tion where both fragments carry angular momentum The angular distribution and overall laboratory frame angular momentum polarization of fragments following photolysis of oriented/aligned molecules has been discussed by Pipes et al. Here we explore the role played by an intense NIR laser field on the angular character of the photodissociation process as observed through the angular distributions of the CH 3 fragments. 1/2)/@Cl(P1/2)1Cl(2P3/2)# ratio produced in the electronic predissociation channel of allyl chloride with a prior study of the chlorine atom spin–orbit states produced from HCl photodissociation, concluding that angular momentum recoupling in the exit channel at long.   In book: Imaging in Chemical Dynamics (pp) treat the role of molecular axis rotation on the electronic angular momentum polarization of the fragments. of 2P fragments .