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Volume 126, Issue 17, 07 May 2007
126(2007); http://dx.doi.org/10.1063/1.2737443View Description Hide Description
The pulsed field ionization-photoelectron (PFI-PE) spectrum of allyl radical in the energy range of has been measured using vacuum ultraviolet laser. Based on the simulation of the rotational structures resolved in the vibrational PFI-PE bands of , the ionization energies (IEs) of to form are determined to be and , respectively, where is the symmetric C–C–C bending mode of . These values are compared to values obtained in previous experimental and high-level ab initio quantum theoretical studies.
126(2007); http://dx.doi.org/10.1063/1.2734542View Description Hide Description
The symmetry of the surface of an electrolyte solution can be anisotropic, regardless of the bulk’s isotropic symmetry, because of spatial correlations between adsorbed ions. The author used x-ray grazing-incidence diffraction to measure the spatial correlations between sodium ions in “classical one-component plasma” adsorbed with Bjerrum’s density at the surface of a monodispersed particle colloidal silica solution stabilized by NaOH with a total bulk concentration . The authors findings show that the surface compact layer is in a two-dimensional crystalline state (symmetry ), with four sodium ions forming the unit cell and a translational correlation length between the ions.