TY - JOUR
T1 - Direct measurement of the binding energy of the linear He ⋯ I 35,37Cl(X) isotopomers
AU - Darr, Joshua P.
AU - Crowther, Andrew C.
AU - Loomis, Richard A.
N1 - Funding Information:
Acknowledgement is made to the Research Corporation for a Research Innovation Award, to the Camille and Henry Dreyfus Foundation for a New Faculty Award, to the donors of The Petroleum Research Fund, administered by the ACS, and to the David and Lucile Packard Foundation for a Fellowship in Science and Engineering for support of this research. We thank P.R. Winter for experimental assistance during the action spectroscopy experiments and A.B. McCoy for many valuable discussions and suggestions concerning this work.
PY - 2003/9/5
Y1 - 2003/9/5
N2 - Two color, pump-probe action spectra were recorded by tuning an excitation laser through the ICl B-X, 2-0 spectral region and monitoring the fluorescence induced by a probe laser, which was fixed on either the I35Cl or the I37Cl E-B, 13-2 bandhead. A continuum signal is observed above a discrete energy in each of the action spectra that is attributed to bound-free transitions of the He⋯I35,37Cl complexes with preferred linear equilibrium geometries. The shifts of the onsets of the continuum signals from the transition energies of the respective I35Cl and I37Cl B-X, 2-0 band origins correspond to ground state binding energies of 22.3(1.2) and 22.5(1.1) cm-1 for the linear He⋯I35Cl(X,v″=0) and He⋯I 37Cl(X,v″=0) isotopomers.
AB - Two color, pump-probe action spectra were recorded by tuning an excitation laser through the ICl B-X, 2-0 spectral region and monitoring the fluorescence induced by a probe laser, which was fixed on either the I35Cl or the I37Cl E-B, 13-2 bandhead. A continuum signal is observed above a discrete energy in each of the action spectra that is attributed to bound-free transitions of the He⋯I35,37Cl complexes with preferred linear equilibrium geometries. The shifts of the onsets of the continuum signals from the transition energies of the respective I35Cl and I37Cl B-X, 2-0 band origins correspond to ground state binding energies of 22.3(1.2) and 22.5(1.1) cm-1 for the linear He⋯I35Cl(X,v″=0) and He⋯I 37Cl(X,v″=0) isotopomers.
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U2 - 10.1016/S0009-2614(03)01343-5
DO - 10.1016/S0009-2614(03)01343-5
M3 - Article
AN - SCOPUS:0141563224
SN - 0009-2614
VL - 378
SP - 359
EP - 367
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -