Download or read book State Resolved Collisional Energy Transfer in Highly Vibrationally Excited Polyatomic Molecules written by and published by . This book was released on 1992 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transfer of energy in isolated or colliding molecules is a fundamental process with practical consequences for complex phenomena occurring in atmospheric chemistry, combustion, molecular lasers, plasmas, and a host of other environments containing energetic species. We have developed a technique that combines vibrational overtone excitation, to prepare highly vibrationally excited initial states, and time-resolved spectroscopic detection, to probe the evolution of the prepared state, for studying energy transfer in vibrationally energized molecules. We have used this approach to determine directly, for the first time, the frequencies of the three ungerade vibrations in the first electronically excited state of acetylene. Using this information we have characterized highly vibrationally excited states of acetylene and directly the frequencies and rotational constants of the perturbing vibrational states at these energies. Combining these spectroscopic insights on the vibrationally and electronically excited states of acetylene has allowed us to determine the energy transfer rates and pathways in the collisional relaxation of a polyatomic molecule containing 10,000 cm-1 of vibrational energy, Rotational energy transfer is very rapid, occurring on about every other collision, but is essentially unaffected by the identity of the vibrational state in which the rotational relaxation occurs.
Download or read book Collisional Energy Transfer in Highly Vibrationally Excited Polyatomic Molecules written by F. F. Crim and published by . This book was released on 1988 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The three objectives of this work are to determine the nature of highly vibrationally excited polyatomic molecule, to determine the rate constants and pathways for the collisional relaxation of these molecules, and to probe the electronic spectroscopy of these molecules. We have created and implemented approaches for accomplishing these objectives and have demonstrated their feasibility by studying the collisional energy transfer in highly vibrational excited acetylene. We have found that the collisional self relaxation rates of single angular momentum states with 10,000/cm of vibrational energy are a substantial fraction of the gas kinetic collision rates. The rate constant is about a factor of two smaller for relaxation by atomic partners. Molecular energy transfer, Vibrational energy transfer. (MJM).
Download or read book Collisional Energy Transfer from Highly Vibrationally Excited Polyatomic Molecules written by Kieran Fergus Lim and published by . This book was released on 1988 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies in Collisional Energy Transfer of Highly Rotationally and Vibrationally Excited Molecules written by Trevor C. Brown and published by . This book was released on 1988 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the studies made on several unimolecular reaction systems in order to obtain collisional energy transfer information on highly excited polyatomic molecules. Pressure-dependant very low-pressure pyrolysis (VLPP) and infrared multiphoton decomposition (IRMPD) experimental techniques are used.
Download or read book Highly Excited Molecules written by Amy S. Mullin and published by . This book was released on 1997 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integrating both theoretical and experimental approaches, this unique book examines transition states and chemical reactivity, and will be a useful tool for anyone studying the chemical dynamics, nature, and behavior of molecules in an excited state. The subject has important applications in atmospheric chemistry, plasmas, high-temperature materials processing, combustion, photosynthesis, detonation, and explosives.
Download or read book Gas Kinetics and Energy Transfer written by P. G. Ashmore and published by Royal Society of Chemistry. This book was released on 1977-01-01 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the growing volume of published work in this field, researchers will find this book an invaluable source of information on current methods and applications.
Download or read book Time Resolved Vibrational Spectroscopy V written by Hiroaki Takahashi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work contained in this volume is representative of the presentations made by the participants at the Fifth International Conference on Time-Resolved Vibra tional Spectroscopy, which was held at Waseda University, Tokyo, Japan, from June 3 to 7, 1991. The conference was the fifth in a biennial series initiated in 1982 by Prof. George H. Atkinson (University of Arizona) at Lake Placid, USA, and subsequently convened by Prof. Alfred Laubereau (University of Bayreuth, Germany) and Dr. Manfred Stockburger (Max-Planck Institut, G6ttingen, Ger many) at Bayreuth-BischofsgrUn, Germany, in 1985, by Prof. Joop D.W. Van Voorst (University of Amsterdam) at Amersfoort, The Netherlands, in 1987, and by Prof. Thomas G. Spiro (princeton University) at Princeton, USA, in 1989. The purpose of the conference is to bring together researchers from various disciplines and provide a forum for discussion of the latest advances in time resolved spectroscopies concerned with transient vibrational phenomena and their application to fundamental scientific and engineering studies. The 167 registered participants, including 46 students, from 14 different countries, represented a wide range of scientific disciplines, and clearly indicated that the field continues to expand into new areas of physics, chemistry, biology, and materials science. Their enthusiasm and the originality and quality of the contributions presented produced a very successful and enjoyable conference.
Download or read book Time Resolved Vibrational Spectroscopy written by Alfred Laubereau and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than two decades time-resolved vibrational spectroscopy (TRVS) was only part of general conferences on solid-state physics, molecular spec troscopy, photochemistry and photobiology. It was in 1982 when the first meeting on TRVS was organized at Lake Placid. The conference met a strong need among the workers in the field, and it was decided to continue with spe cial conferences on this topic. The 2nd International Conference on Time-Resolved Vibrational Spec troscopy was held June 3-i, 1985 at Bayreuth-Bischofsgrun, Germany. Sci entists from many disciplines came together to discuss their common interest in time-resolved techniques and spectroscopic applications. The high qual ity of the research presented, the enthusiasm of the participants, and the attractive surroundings combined to an enjoyable atmosphere. Ample time for discussions and the limited number of participants (approximately 100) stimulated the formal and informal exchange of ideas. "\'umerous people helped to make the conference run smoothly. Special thanks are due to Mrs. Lenich for making the technical arrangements, and to the program committee for the selection of the scientific presentations. The meeting has benefited from several financial souces. The generous sup port by the Emil-Warburg-Stiftung was particularly helpful. Financial aid of the "Deutsche Forschungsgemeinschaft" and of the "Bayerisches Staatsmini sterium fur U nterricht und K ultus" is also gratefully acknowledged.
Download or read book Reglement van het plattelandsch begrafenisfonds te Ysselmonde written by and published by . This book was released on with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Excited States written by Edward C. Lim and published by Elsevier. This book was released on 2013-10-22 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excited States, Volume 7 is a collection of papers that discusses the excited states of molecules. The first paper reviews the rotational involvement in intra-molecular in vibrational redistribution. This paper analyzes the vibrational Hamiltonian as to its efficacy in detecting the manifestations of intra-molecular state-mixing in time-resolved and time-averaged spectroscopic measurements. The next paper examines the temporal behavior of intra-molecular vibration-rotation energy transfer (IVRET) and the effects of IVRET on collision, reaction, and the decomposition processes. This paper also describes how IVRET can decrease the anisotropy of the angular distribution of photo dissociating molecules that takes longer than the rotational period of disassociation. The third paper explains rotations and electronic decay by focusing on nonresonant light scattering, which is explained in the theory of radiationless transitions, when the exciting light source is included. The last paper shows how sub-Doppler techniques adapted from atomic physics can measure accurately dense rotational triplet structure and singlet-triplet couplings in high vibrational triplet levels. This book will prove helpful for researchers whose work involves physical chemistry or molecular chemistry and physicists involved in atomic or solid-state physics.
Download or read book Laser Double resonance Studies of Electronic Spectroscopy and State resolved Collisional Relaxation in Highly Vibrationally Excited Acetylene written by Joseph Daniel Tobiason and published by . This book was released on 1992 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The State resolved Photochemistry of Small Molecules on Their Ground and Electronic Excited States written by Rhett James Barnes and published by . This book was released on 1999 with total page 1010 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AFOSR Chemical Atmospheric Sciences Program Review written by United States. Air Force. Directorate of Chemical and Atmospheric Sciences and published by . This book was released on 1975 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual AFOSR Chemistry Program Review written by United States. Air Force. Directorate of Chemical Sciences and published by . This book was released on with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Reports Awareness Circular TRAC written by and published by . This book was released on 1989-03 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book State to field Vibrational Energy Transfer in S1 Para difluorobenzene written by Todd Andrew Stone and published by . This book was released on 2000 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
