Now showing items 51-60 of 148
Selective resonance enhanced multiphoton ionization of aromatic polymers in supersonic beam mass spectrometry
(Elsevier, 1991-07-15)
Various polymers have been studied using a pulsed laser evaporation method for volatilizing these species and entraining them into a supersonic jet expansion followed by resonance enhanced multiphoton ionization (REMPI) ...
Chemiluminescence of nitric oxide: The NO (C2[Pi]-A2[Sigma]+) rate constant
(Elsevier, 1981-05)
A rocket borne scanning 1/4-m spectrometer was used to observe the night airglow between 1900 and 2300 A at a resolution of 15 A. An attitude control system oriented the payload horizontally near apogee (150 km) and pointed ...
Resonance enhanced multiphoton ionization of nucleosides by using pulsed-laser desorption in supersonic beam mass spectrometry
(Elsevier, 1989-04-01)
Pulsed-laser desorption is used as a means of volatilizing nucleosides into the gas phase for entrainment into a supersonic jet expansion. These species are then studied in a time-of-flight mass spectrometer by resonance ...
The electronic absorption spectrum of crystallinechromyl chloride at 1.7[deg]K
(Elsevier, 1968-01)
The spectrum of chromyl chloride, CrO2Cl2 , in the region 6000 A-3800 A hasbeen obtained for the crystalline substance at temperatures down to 1.7[deg]K. Three absorption systems have been observed, together with the start ...
Interpretation of the vibrational behavior of methyl and substituted methyl radicals perturbed by alkali halide molecules
(Elsevier, 1970-12)
The observed vibrational behavior of free and alkali halide-perturbed methyl radicals in low temperature inert matrices is rationalized on the basis of the relaxation of the molecular charge distribution of the methyl ...
The emission and absorption spectra of chromyl chloride in an argon matrix at 4 K
(Elsevier, 1974-07)
The emission and absorption spectra of chromyl chloride (and the pure 35Cl isotopic species) have been obtained in an argon matrix at 4 K. In emission, two systems are obtained and these correlate with the two systems ...
Rotation spectrum of methyl alcohol
(Elsevier, 1959)
The rotation spectrum of methanol vapor has been measured from 50 to 457 cm-1. Combining these data with the work of Borden and Barker provides an accurate map of the spectrum to 625 cm-1 together with some provisional ...
Polarized Raman spectra of oriented films of Α-helical poly( L -alanine) and its N -deuterated analogue
(John Wiley & Sons, Ltd., 1998-01)
Polarized Raman spectra were obtained on well oriented films of Α-helical poly( L -alanine) (Α-PLA) and its N -deuterated analogue in order to obtain definitive assignments of the E 2 -species modes. Such assignments ...
HO x Regeneration in the Oxidation of Isoprene III: Theoretical Study of the key Isomerisation of the Z -Δ-hydroxy-peroxy Isoprene Radicals
(WILEY-VCH Verlag, 2010-12-17)
As a sequel to our communication on a proposed new isoprene oxidation mechanism aiming to rationalize the unexpectedly high OH and HO 2 levels observed in isoprene-rich areas (J. Peeters, T. L. Nguyen, L. Vereecken, Phys. ...
Parameterization of Peptide 13 C Carbonyl Chemical Shielding Anisotropy in Molecular Dynamics Simulations Effects of Dynamic Local Distortions on 13 C Carbonyl NMR Relaxation.
(WILEY-VCH Verlag, 2007-06-25)
NMR chemical shielding anisotropy (CSA) relaxation is an important tool in the study of dynamical processes in proteins and nucleic acids in solution. Herein, we investigate how dynamical variations in local geometry affect ...