Author: Jay Martin WiesenfeldPublisher:
ISBN:
Category :
Languages : en
Pages : 782
Book Description
Vibrational Relaxation and Energy Transfer of Matrix Isolated HCl and DCl
Author: Jay Martin WiesenfeldPublisher:
ISBN:
Category :
Languages : en
Pages : 782
Book Description
Vibrational Relaxation and Energy Transfer of Matrix Isolated HCl and DCl
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Vibrational kinetic and spectroscopic studies have been performed on matrix-isolated HCl and DCl between 9 and 20 K. Vibrational relaxation rates for v = 2 and v = 1 were measured by a tunable infrared laser-induced, time-resolved fluorescence technique. In an Ar matrix, vibrational decay times are faster than radiative and it is found that HCl relaxes about 35 times more rapidly than CCl, in spite of the fact that HCl must transfer more energy to the lattice than DCl. This result is explained by postulating that the rate-determining step for vibrational relaxation produces a highly rotationally excited guest in a V yield R step; rotational relaxation into lattice phonons follows rapidly. HCl v = 1, but not v = 2, excitation rapidly diffuses through the sample by a resonant dipole-dipole vibrational energy transfer process. Molecular complexes, and in particular the HCl dimer, relax too rapidly for direct observation, less than or approximately 1 .mu.s, and act as energy sinks in the energy diffusion process. The temperature dependence for all these processes is weak--less than a factor of two between 9 and 20 K. Vibrational relaxation of HCl in N2 and O2 matrices is unobservable, presumably due to rapid V yield V transfer to the host. A V yield R binary collision model for relaxation in solids is successful in explaining the HCl(DCl)/Ar results as well as results of other experimenters. The model considers relaxation to be the result of ''collisions'' due to molecular motion in quantized lattice normal modes--gas phase potential parameters can fit the matrix kinetic data.
Vibrational Relaxation and Energy Transfer in Solids
Author: Max BerkowitzResearch in Progress
Author: Energy Research Abstracts
Author: Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 864
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Chemical Dynamics in Condensed Phases
Author: Abraham NitzanPublisher: Oxford University Press
ISBN: 9780198529798
Category : Science
Languages : en
Pages : 743
Book Description
Graduate level textbook presenting some of the most fundamental processes that underlie physical, chemical and biological phenomena in complex condensed phase systems. Includes in-depth descriptions of relevant methodologies, and provides ample introductory material for readers of different backgrounds.
Research in Progress Between ... and
Author: United States. Army Research OfficePublisher:
ISBN:
Category : Military research
Languages : en
Pages : 458
Book Description
Author: James Austin Ball
Author: 
Author: