Van der Waals Complexes in Supersonic Beams

Van der Waals Complexes in Supersonic Beams PDF Author: Jaroslaw Koperski
Publisher: Wiley-VCH
ISBN: 9783527403844
Category : Science
Languages : en
Pages : 237

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Van der Waals Complexes in Supersonic Beams

Van der Waals Complexes in Supersonic Beams PDF Author: Jaroslaw Koperski
Publisher: Wiley-VCH
ISBN: 9783527403844
Category : Science
Languages : en
Pages : 237

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Book Description


Study of Diatomic Van Der Waals Complexes in Supersonic Beams

Study of Diatomic Van Der Waals Complexes in Supersonic Beams PDF Author: Jaroslaw Koperski
Publisher:
ISBN:
Category :
Languages : en
Pages : 150

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Study of Diatomic Van Der Waals Complexes in Supersonic Beams

Study of Diatomic Van Der Waals Complexes in Supersonic Beams PDF Author: Jaroslaw Koperski
Publisher:
ISBN:
Category :
Languages : en
Pages : 149

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Laser-spectroscopic Characterisation of Diatomic Van Der Waals Complexes Produced in Supersonic Expansion Beams

Laser-spectroscopic Characterisation of Diatomic Van Der Waals Complexes Produced in Supersonic Expansion Beams PDF Author: Jarosław Koperski
Publisher:
ISBN:
Category : Laser spectroscopy
Languages : en
Pages : 224

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Dynamics of Polyatomic Van der Waals Complexes

Dynamics of Polyatomic Van der Waals Complexes PDF Author: Nadine Halberstadt
Publisher: Springer Science & Business Media
ISBN: 146848009X
Category : Science
Languages : en
Pages : 527

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Book Description
This publication is the Proceedings of the NATO Advanced Research Workshop (ARW) on the Dynamics of Polyatomic Van der Waals Molecules held at the Chateau de Bonas, Castera-Verduzan, France, from August 21 through August 26, 1989. Van der Waals complexes provide important model problems for understanding energy transfer and dissipation. These processes can be described in great detail for Van der Waals complexes, and the insight gained from such studies can be applied to more complicated chemical problems that are not amenable to detailed study. The workshop concentrated on the current questions and future prospects for extend ing our highly detailed knowledge of triatomic Van der Waals molecule dynamics to polyatomic molecules and clusters (one molecule surrounded by several, or up to sev eral tens of, atoms). Both experimental and theoretical studies were discussed, with particular emphasis on the dynamical behavior of dissociation as observed in the dis tributions of quantum states of the dissociation product molecules. The discussion of theoretical approaches covered the range from complete ab initio studies with a rig orous quantum mechanical treatment of the dynamics to the empirical determination of potential energy surfaces and a classical mechanical treatment of the dynamics. Time independent, time dependent and statistical approaches were considered. The workshop brought together experts from different fields which, we hope, benefited from their mutual interaction around the central theme of the Dynamics of Van der Waals complexes.

Structures and Conformations of Non-Rigid Molecules

Structures and Conformations of Non-Rigid Molecules PDF Author: J. Laane
Publisher: Springer Science & Business Media
ISBN: 9401120749
Category : Science
Languages : en
Pages : 640

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Book Description
From the beginnings of modern chemistry, molecular structure has been a lively area of research and speculation. For more than half a century spectroscopy and other methods have been available to characterize the structures and shapes of molecules, particularly those that are rigid. However, most molecules are at least to some degree non-rigid and this non-rigidity plays an important role in such diverse areas as biological activity, energy transfer, and chemical reactivity. In addition, the large-amplitude vibrations present in non-rigid molecules give rise to unusual low-energy vibrational level patterns which have a dramatic effect on the thermodynamic properties of these systems. Only in recent years has a coherent picture of the energetics and dynamics of the conformational changes inherent in non-rigid (and semi-rigid) molecules begun to emerge. Advances have been made in a number of different experimental areas: vibrational (infrared and Raman) spectroscopy, rotational (microwave) spectroscopy, electron diffraction, and, most recently, laser techniques probing both the ground and excited electronic states. Theoretically, the proliferation of powerful computers coupled with scientific insight has allowed both empirical and ab initio methods to increase our understanding of the forces responsible for the structures and energies of non-rigid systems. The development of theory (group theoretical methods and potential energy surfaces) to understand the unique characteristics of the spectra of these floppy molecules has also been necessary to reach our present level of understanding. The thirty chapters in this volume contributed by the key speakers at the Workshop are divided over the various areas. Both vibrational and rotational spectroscopy have been effective at determining the potential energy surfaces for non-rigid molecules, often in a complementary manner. Recent laser fluorescence work has extended these types of studies to electronic excited states. Electronic diffraction methods provide radial distribution functions from which both molecular structures and compositions of conformational mixtures can be found. Ab initio calculations have progressed substantially over the past few years, and, when carried out at a sufficiently high level, can accurately reproduce (or predict ahead of time) experimental findings. Much of the controversy of the ARW related to the question of when an ab initio is reliable. Since the computer programs are readily available, many poor calculations have been carried out. However, excellent results can be obtained from computations when properly done. A similar situation exists for experimental analyses. The complexities of non-rigid molecules are many, but major strides have been taken to understand their structures and conformational processes.

Advances in Multiphoton Processes and Spectroscopy

Advances in Multiphoton Processes and Spectroscopy PDF Author: S. H. Lin
Publisher: World Scientific
ISBN: 9789810207182
Category : Science
Languages : en
Pages : 324

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Book Description
In view of the rapid growth in both experimental and theoretical studies of multiphoton processes and multiphoton spectroscopy of atoms, ions, and molecules in chemistry, physics, biology, materials sciences, etc., it is desirable to publish an Advanced Series that contains review papers readable not only by active researchers in these areas, but also by those who are not experts in the field but who intend to enter the field. The present series attempts to serve this purpose. Each review article is written in a self-contained manner by experts in the area so that the readers can grasp the knowledge in the area without too much preparation. This volume will be useful not only to active researchers but also to other scientists in the area of biology, chemistry, materials science, and physics.

Time-of-Flight Mass Spectrometry and its Applications

Time-of-Flight Mass Spectrometry and its Applications PDF Author: E.W. Schlag
Publisher: Newnes
ISBN: 0444596186
Category : Science
Languages : en
Pages : 424

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Book Description
The resurgence of time-of-flight mass spectrometry (TOF-MS) has had its origin in the simplicity of construction and application of such instruments together with the high transmission and the great increase in resolution that has been achieved. The instrument lends itself naturally to a coupling with pulsed laser sources, though this is not a prerequisite. It also affords a time resolution far beyond that traditionally achieved with mass spectrometric rapid scan techniques - a recent example being the real-time analysis of a multi-component mixture from an automobile exhaust. Furthermore, the mass range appears to be extremely large: mass up to 500 kDa and beyond what is being readily measured in the laboratory today. The present set of contributions attempts to give a survey of current applications from many of the active groups in the field. A variety of new applications are considered which are no doubt just the beginning of large new areas of application. By presenting this work in book form it is hoped that it will be of help to the many groups intending to initiate work in this rapidly expanding new area of mass spectrometry.

Advances In Multi-photon Processes And Spectroscopy, Vol 11

Advances In Multi-photon Processes And Spectroscopy, Vol 11 PDF Author: Alberto J Beswick
Publisher: World Scientific
ISBN: 9814496847
Category : Science
Languages : en
Pages : 217

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Book Description
In view of the rapid growth in both experimental and theoretical studies of multiphoton processes and multiphoton spectroscopy of atoms, ions and molecules in chemistry, physics, biology, materials science, etc., it is desirable to publish an advanced series of books containing review papers that can be read not only by active researchers in these areas, but also by those who are not experts in the field but intend to enter it. The present series attempts to serve this purpose. Each review article is written in a self-contained manner by experts in the area, so that the reader can grasp the knowledge in the area without too much preparation.

Lasers and Mass Spectrometry

Lasers and Mass Spectrometry PDF Author: David M. Lubman
Publisher: Oxford University Press
ISBN: 0195363140
Category : Science
Languages : en
Pages : 560

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Book Description
Contributors to this volume focus on the fundamentals of the technique of analyzing material based on the atomic weight of the species, using the power and definition of lasers to enable measurement of smaller quantities and more finely localized particles. Each chapter deals with a particular application area and should be sufficient to form an entry point for the utilization of mass spectrometry by graduate students and researchers. The book provides the first full discussion of the new techniques of laser applications in the field.