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Two- and three-body photodissociation dynamics of diiodobromide (I2Br) anion
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10.1063/1.3571474
/content/aip/journal/jcp/134/13/10.1063/1.3571474
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/13/10.1063/1.3571474

Figures

Image of FIG. 1.
FIG. 1.

(a) Photofragment mass ratio of two-fragment valid events following excitation of I2Br at photon energies of 4.13–4.59 eV and (b) three-body photofragment mass distribution following excitation at = 4.28 eV.

Image of FIG. 2.
FIG. 2.

Photofragment translational energy distributions for two-body dissociation of I2Br into 79 and 254 amu fragments. P(E T ) distributions are shifted to higher E T by 4.59 eV (). The allowed translational energies for channels 1A–1E are bracketed.

Image of FIG. 3.
FIG. 3.

(a) Photofragment translational energy distributions for two-body dissociation of I2Br into 127 and 206 amu fragments. P(E T ) distributions are shifted to higher E T by 4.59 eV (). The allowed translational energies for channels 2A–2F are bracketed. (b) P(E T ) distributions scaled by mass ratio of IBr to IIBr (see text) and shifted by 4.59 eV (). The dotted line is drawn at the expected E T for channel 3B.

Image of FIG. 4.
FIG. 4.

Photofragment translational energy distributions for three-body dissociation of I2Br upon excitation by photon energies of 4.13–4.59 eV. The expected kinetic energy release for channels 3A–3D is indicated by dashed lines.

Image of FIG. 5.
FIG. 5.

Dalitz plots of momentum partitioning among the three fragments in the three-body dissociation of I2Br upon excitation by photon energies of 4.13–4.59 eV. Points correspond to the 3A feature in the three-body N(E T ). The red line in the plots for 4.28–4.59 eV is result of a simulation for sequential decay (see text).

Image of FIG. 6.
FIG. 6.

Dalitz plots of momentum partitioning among the three fragments in the three-body dissociation of I2Br upon excitation by photon energies of 4.13–4.59 eV associated with the 3B feature in the three-body N(E T ).

Tables

Generic image for table
Table I.

List of product channels organized by fragment masses in amu. Dissociation energies for each channel are given in electron volts (eV).

Generic image for table
Table II.

Numbers relevant for sequential dissociation for photon energies of 4.28–4.59 eV. E T is the total energy deposited in translation. ε is a parameter describing the partitioning of E T between the two dissociation steps (see text). E 1 is translational energy imparted in the first dissociation step. E 1 + ΔE adjusts for the difference between photon energies.

Generic image for table
Table III.

Branching fractions for two- and three-body dissociation of I2Br.

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/content/aip/journal/jcp/134/13/10.1063/1.3571474
2011-04-06
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two- and three-body photodissociation dynamics of diiodobromide (I2Br−) anion
http://aip.metastore.ingenta.com/content/aip/journal/jcp/134/13/10.1063/1.3571474
10.1063/1.3571474
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