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Energy transfer of highly vibrationally excited naphthalene. II. Vibrational energy dependence and isotope and mass effects
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10.1063/1.2868753
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Affiliations:
1 Institute of Atomic and Molecular Sciences, Academia Sinica, P.O. Box 23-166, Taipei, 10617 Taiwan
a) Also at the Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.
b) Also at the Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan.
c) Author to whom correspondence should be addressed. Electronic mail: ckni@po.iams.sinica.edu.tw.
J. Chem. Phys. 128, 124320 (2008)
/content/aip/journal/jcp/128/12/10.1063/1.2868753
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/12/10.1063/1.2868753

Figures

FIG. 1.

Angular resolved energy transfer probability density functions (double differential cross section with respect to solid angle and transferred energy) of naphthalene excited by 266 and in collisions with Kr at various collision energies. Thick black line, thin black line, and dot black line represent near forward, sideway, and backward density functions excited by ; thick gray line, thin gray line, and dot gray line represent near forward, sideway, and backward density functions excited by . The first column represents the up collisions energy transfer; the second column represents the down collisions energy transfer. The third column shows the region of maximum down collisions energy transfer. The density functions at each collision energy for each pump wavelength are normalized separately so that . In each plot, the density functions for 266 and are plotted in the same scale.

FIG. 2.

Angular resolved energy transfer probability density functions for naphthalene- and naphthalene- in collisions with Kr at two collision energies. Thick black line, thin black line, and black dot line represent near forward, sideway, and backward density functions for naphthalene-; thick gray line, thin gray line, and gray dot line represent near forward, sideway, and backward density functions for naphthalene-. Collision energies are 564 and for naphthalene- and naphthalene-, respectively, in (a)–(c); they are 853 and for -naphthalene and -naphthalene, respectively, in (d)–(f). The first column represents the up collisions energy transfer; the second column represents the down collisions energy transfer. The third column shows the region of maximum down collisions energy transfer. Both naphthalene- and naphthalene- are excited by photons. The density functions at each collision energy are normalized so that . In each plot, naphthalene- and naphthalene- are plotted in the same scale.

FIG. 3.

Angular resolved energy transfer probability density functions of naphthalene excited by in collisions with Xe at various collision energies. Thick black line, thin black line, and gray line represent near forward, sideway, and backward probability density functions. The first column represents the up collisions energy transfer; the second column represents the down collisions energy transfer. The third column shows the region of maximum down collisions energy transfer. The density functions at each collision energy are normalized separately so that .

FIG. 4.

Energy transfer probability density functions in collisions with Xe at various collision energies. Thin black line: ; gray line: ; thick black line: . Negative values represent down collisions energy transfer and positive values represent up collisions energy transfer. The density functions at each collision energy are normalized separately so that .

Tables

Table I.

Velocity uncertainties and speed ratios of naphthalene molecular beam. and are the full widths at half maximum of the naphthalene velocity distribution in the and directions, respectively. is the naphthalene velocity in the laboratory frame, is the naphthalene velocity in the center-of-mass frame, , is the uncertainty of collision energy, and .

/content/aip/journal/jcp/128/12/10.1063/1.2868753
2008-03-31
2014-04-20

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