UV-visible absorption of small gold clusters in neon: Au-n (n=1-5 and 7-9)
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We have developed an ultra-stable low temperature scanning tunneling microscope (LTSTM) for application in atomic scale spectroscopy and atom manipulation experiments. The design is based on the Besocke type microscope allowing the installation of the LTST ...
A review with 30 refs. on some of the authors works on the absorption, excitation and emission spectra of C60 embedded in rare gas matrixes while stressing the role of the environment. The gas phase resonant 2-photon ionization spectrum of C60 is reanalyze ...
Radiative transfer is often the dominant energy transport channel in inertial confinement fusion experiments. It is a basic process needed in order to understand the behaviour of astrophysical plasmas, like stellar atmospheres and the inner parts of stars. ...
The nitric oxide monomer-dimer equil. was monitored at 273-364 K. The enthalpy change for the reaction 2 NO -> (NO)2, calcd. from the temp. dependence of the UV absorption intensity, and the heat of formation at 316 K are -1.07 +- 0.07 and 42.09 +- 0.11 kc ...
We report a first-principle study of the E(1) defect in alpha-quartz and of the analogous E'(gamma) defect in amorphous SiO2. Our calculation supports the attribution of both these defects to a positively charged oxygen vacancy. The ground-state configurat ...
The integrated absorption of the b1 - X transition of the Me radical (2160 .ANG.) and the B - X transition of the allyl radical (2100-2400 .ANG.) were compared, in the flash photolysis of 1-butene. From the f value of the Me band, the oscillator strength o ...
When electrons are subject to a potential with two incommensurate periods, translational invariance is lost, and no periodic band structure is expected. However, model calculations based on nearly free one-dimensional electrons and experimental results fro ...
We performed angle-resolved photoelectron spectroscopy (ARPES) and resistivity measurements on the layered metal 1T-TiTe2. We determined the quasiparticle dispersion and lifetime. In particular, we could characterize and separately evaluate the effects of ...
The coexistence of localized and free holes in modulation doped InGaAs/InP quantum wells, which show Fermi edge singularities in the cw photoluminescence and excitation spectra, has been determined by picosecond time-resolved luminescence spectroscopy. A l ...
We discuss a novel approach to measure the electron phase-relaxation length and femtosecond lifetimes at surfaces. It relies on the study of the spatial decay of quantum interference patterns in the local density of states (LDOS) with the STM. The method h ...
