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Band evolution and shell structure in large clusters: Aluminum(3-60)anion, copper(1-1113)anion, silver(1-58)anion, and gold(1-223)anion
(1990)
Photoelectron spectroscopy of negatively, charged clusters of aluminum, copper, silver, and gold reveals electronic shell structure and electron energy band development. Photodetachment experiments on Au$\sb6\sp-$ also ...
Investigation of ethynyl radical kinetics using infrared diode laser kinetic spectroscopy
(1990)
High resolution infrared diode laser kinetic spectroscopy has been used to investigate the properties of C$\sb2$H reaction kinetics. The ethynyl radical (C$\sb2$H) was produced in a flowing system by excimer laser photolysis ...
Electron transfer in K(nd) collisions with attaching molecules at low-to-intermediate n
(1990)
Negative ion formation via electron transfer in thermal energy collisions between K(nd) Rydberg atoms and simple polyatomic molecules is studied at low-to-intermediate values of principal quantum number, n (n $<$ 40). At ...
Transition region spectroscopy of dialkali halides: Sodium(2)chloride and sodium(2) + atomic fluorine going to sodium fluoride + sodium
(1990)
Molecular beam chemiluminescence from Na$\sb2$ + F $\to$ NaF + Na$\sp\*$ was dispersed and measured with a fast spectrograph. Attention was given to emission wavelengths at and around 388.5 and 342.8 nm, which correspond ...
Kinetics and dynamics of azoalkane photofragmentation: Direct studies using transient CARS spectroscopy
(1990)
A fundamental and long-standing question surrounds the mechanism of primary bond cleavage in azoalkanes: do the two C-N bonds break in a synchronous or a stepwise manner? When a vapor phase azoalkane absorbs near ultraviolet ...
FT-ICR studies of gas phase silicon cluster ion reactivity and a new model for predicting the structure of silicon clusters
(1990)
A new apparatus capable of combining an external laser vaporization supersonic cluster beam source with a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer has been designed and implemented. Cluster ions ...
Investigation of multiple quantum coherence transfer in two-dimensional NMR spectroscopy
(1990)
The limitations of zero quantum NMR pulse sequences reported in the literature are discussed. Several new pulse sequences which improve and extend the scope of the currently available pulse sequences are described.
A ...
CARS studies of the quenching of excited sulfur atoms by rare gases: Fine structure selectivity in electronic-to-translational energy transfer
(1990)
In the first use of the Raman effect to detect sulfur atoms, transient CARS spectroscopy has revealed novel relaxation effects in sulfur formed through multiple photon excitation of carbon disulfide vapor. Ground term ...
Application of quantum mechanical methods to chemical reactions
(1990)
A variety of quantum mechanical methods have been developed and applied to the study of highly energized "pre-reactive" species involved in chemical reactions. We have examined the character of transition states for both ...
Studies of the vapor phase photodissociation of azomethane-d(6)
(1990)
The photodissociation of fully deuterated azomethane into two CD$\sb3$ radicals and N$\sb2$ was studied using transient CARS spectroscopy as a nanosecond resolved probe of the photoproducts. The Raman-active $\nu\sb1$ ...