Now showing items 1-10 of 105
The vibrational relaxation of I2I2 (X 1Σg+)(X1Σg+) in mesitylene
(The American Institute of Physics, 1998-03-22)
Transient absorption measurements between 400 nm and 570 nm are used to extract information on the vibrational relaxation of iodine in the complexing solvent mesitylene. The well characterized nature of the I2I2-arene ...
Compression of klockmannite, CuSe
(The American Institute of Physics, 1998-07-08)
Copper selenide (CuSe) was compressed in a diamond anvil cell at room temperature up to a pressure of 52 GPa and studied using energy dispersive x-ray diffraction and Raman spectroscopy. CuSe is nearly isostructural with ...
Temperature dependence of deformation-assisted crystallization in amorphous Fe78B13Si9Fe78B13Si9
(The American Institute of Physics, 1998-09-28)
Low-energy ball milling of amorphous Fe78B13Si9Fe78B13Si9 has been performed at temperatures between 25 and 250 °C. Primary crystallization is observed after milling at elevated temperatures, but not after annealing at the ...
Rotational spectrum and structure of the OCS–(CO2)2OCS–(CO2)2 trimer
(The American Institute of Physics, 1998-10-01)
The rotational spectra of nine isotopes of the mixed trimer, OCS–(CO2)2,OCS–(CO2)2, have been assigned using pulsed nozzle FTMW spectroscopy techniques. The structure resembles a distorted triangular cylinder. It can be ...
Deactivation of highly excited CS2CS2 and SO2SO2 by rare gases
(The American Institute of Physics, 1998-02-08)
The time dependent thermal lensing (TDTL) technique has been used to study collisional energy transfer from highly excited CS2CS2 in baths of Xe, Kr, and Ar, and from highly excited SO2SO2 in Kr and Ar. Bath gas pressures ...
Improved methods for thin, surface boundary layer investigations
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1998-10)
New techniques are developed to improve the velocity flow-field measurement capability within a free-surface boundary layer region on which progressive capillary-gravity waves are present. Due to the extremely thin but ...
Coherent x-ray generation at 2.7nm using 25fs laser pulses
(The American Institute of Physics, 1998-02-20)
We demonstrate for the first time that coherent soft-x-ray pulses at wavelengths of 2.7nm can be generated using 25fs driving pulses. High-order harmonic generation in He is used to produce the femtosecond x-ray harmonics, ...
A novel approach for a spin-exchange high density 3He3He target
(The American Institute of Physics, 1998-01-20)
In the past decade high density polarized 3He3He fixed targets based on spin-exchange with optically pumped Rb have been used successfully in electron scattering experiments at MIT/Bates and SLAC, as a neutron polarizer, ...
Stress relaxation and misfit dislocation nucleation in the growth of misfitting films: A molecular dynamics simulation study
(The American Institute of Physics, 1998-01-01)
The low-temperature growth and relaxation of misfitting films are analyzed on the basis of two-dimensional molecular dynamics simulations using Lennard–Jones potentials. The temporal evolution of the surface morphology and ...
In situ optical measurement of liquid drop surface tension in gas metal arc welding
(IOP Publishing Ltd, 1998-08-21)
The surface tension of detached liquid drops in pulsed gas metal arc welding was determined in situ from the period of the prolate-oblate oscillations initiated by the detachment event. The oscillating drops were imaged ...