Photoionization Spectra of Solutions as Obtained by Photoelectron Spectroscopy.
Abstract
Photoelectron spectroscopic methods with variable photon energy (about 5.2 to 10 eV) are applied to solutions of various photoionizable substances. A recently developed photoelectron spectrometer with continuous renewal of solution is briefly described. Experimental data include: the quantum yield (per incident photon) for photoelectron emission as a function of photon energy; energy distribution curves (EDC) of emitted electrons at given photon energies over the full photon energy range. Photoionization cross sections are obtained by the method of EDC superposition as a function of photon energy. The photoionization spectra thus obtained are discussed, and mechanisms of photoionization are established: direct bound-continuum transitions and autoionization of bound excited states. The following systems are examined: lithium ferrocyanide in glycol, lithium iodide in tetraglyme, ferrocene in tetraglyme, beta-naphthol in glycol. The transfer of kinetic energy from quasifree electrons (generated by optical excitation in the liquid phase) to the liquid medium is briefly treated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA012424
Entities
People
- L. Chia
- L. Nemec
- Paul Delahay
Organizations
- New York University