Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases

Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases PDF Author: Cédric Schmidt
Publisher: Springer Nature
ISBN: 3030678385
Category : Science
Languages : en
Pages : 119

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Book Description
This work studies the relaxation dynamics of molecules in both the gas and liquid phases after strong field ionization, using transient absorption in the soft X-rays. In particular, the thesis presents the first realization of time-resolved X-ray absorption spectroscopy in the spectral water window with a laser-based HHG source. These remarkable experiments were not only performed for isolated molecules, but also in liquids, for which the spectral coverage of the K-edges of C, N, and O are of primary importance for investigating biological molecules. The technique relies on the generation of high-order harmonics to further probe the electronic structure of molecules. Using the atomic selectivity of high energies and the temporal coherence of laser technology, we demonstrate the observation of the first stages of chemical transformation of matter in the gas and liquid phases.

Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases

Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases PDF Author: Cédric Schmidt
Publisher: Springer Nature
ISBN: 3030678385
Category : Science
Languages : en
Pages : 119

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Book Description
This work studies the relaxation dynamics of molecules in both the gas and liquid phases after strong field ionization, using transient absorption in the soft X-rays. In particular, the thesis presents the first realization of time-resolved X-ray absorption spectroscopy in the spectral water window with a laser-based HHG source. These remarkable experiments were not only performed for isolated molecules, but also in liquids, for which the spectral coverage of the K-edges of C, N, and O are of primary importance for investigating biological molecules. The technique relies on the generation of high-order harmonics to further probe the electronic structure of molecules. Using the atomic selectivity of high energies and the temporal coherence of laser technology, we demonstrate the observation of the first stages of chemical transformation of matter in the gas and liquid phases.

Time-resolved Soft X-ray Absorption Spectroscopy in Transmission Mode on Liquids at MHz Repetition Rates

Time-resolved Soft X-ray Absorption Spectroscopy in Transmission Mode on Liquids at MHz Repetition Rates PDF Author: Mattis Fondell
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description


Photochemistry

Photochemistry PDF Author: Oliver Schalk
Publisher: American Chemical Society
ISBN: 0841299072
Category : Science
Languages : en
Pages : 201

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Book Description
Photochemistry is an important part of both chemistry and biology and is of great practical significance for the development of sustainable sources of energy. The mechanisms of photochemistry are far from trivial and far from understood. There are limits to how well theory can describe the processes and how well experiments can resolve them. This book aims to provide an overview of state-of-the-art methods for both theoretical development and experimental techniques, with a focus on ultrafast molecular processes and electronic excitation of organic molecules. These fields are active and progress is being made, carried by the increasing speed of computation and the development of new light sources, most notably X-ray sources at large facilities. Alongside these two layers of theoretical development and experimental techniques is a third layer—model building. In this layer, model building tries to find similarities in seemingly unrelated experimental results and deepen our general knowledge of photoinduced processes. Often, progress is made not by cutting-edge techniques but rather by using well-established techniques with a great variety of molecules—this approach promises less glory but is just as important as the first two layers. Examples mentioned in the text are the Woodward–Hoffman rules and the dynamophore concept. All three layers are crucial to push our knowledge further and, eventually, to use it for developing new and more advanced optical devices.

Structural Dynamics with X-ray and Electron Scattering

Structural Dynamics with X-ray and Electron Scattering PDF Author: Kasra Amini
Publisher: Royal Society of Chemistry
ISBN: 1837671141
Category : Science
Languages : en
Pages : 671

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Book Description


Towards the Study of Ultrafast Chemical Dynamics Using Table-top Femtosecond Time-resolved Soft X-ray Transient Absorption Spectroscopy

Towards the Study of Ultrafast Chemical Dynamics Using Table-top Femtosecond Time-resolved Soft X-ray Transient Absorption Spectroscopy PDF Author: Zhi-Heng Loh
Publisher:
ISBN:
Category :
Languages : en
Pages : 300

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Book Description


NEXAFS Spectroscopy

NEXAFS Spectroscopy PDF Author: Joachim Stöhr
Publisher: Springer Science & Business Media
ISBN: 3662028530
Category : Science
Languages : en
Pages : 415

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Book Description
This is the first ever comprehensive treatment of NEXAFS spectroscopy. It is suitable for novice researchers as an introduction to the field, while experts will welcome the detailed description of state-of-the-art instrumentation and analysis techniques, along with the latest experimental and theoretical results.

Time-Resolved Spectroscopy in Complex Liquids

Time-Resolved Spectroscopy in Complex Liquids PDF Author: Renato Torre
Publisher: Springer
ISBN: 9780387506487
Category : Science
Languages : en
Pages : 0

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Book Description
Time-Resolved Spectroscopy in Complex Liquids is intended to introduce the experimental researchers to state-of-the-art techniques in the study of the dynamics of complex liquids. The contributors concentrate on time-resolved optical spectroscopy, which recently produced many relevant results and new information about complex liquids. This is an emerging topic of soft-matter science and this book provides the most up-to-date account of new development.

Time-Resolved Spectroscopy

Time-Resolved Spectroscopy PDF Author: Thomas Weinacht
Publisher: CRC Press
ISBN: 0429804180
Category : Science
Languages : en
Pages : 358

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Book Description
This concise and carefully developed text offers a reader friendly guide to the basics of time-resolved spectroscopy with an emphasis on experimental implementation. The authors carefully explain and relate for the reader how measurements are connected to the core physical principles. They use the time-dependent wave packet as a building block for understanding quantum dynamics, progressively advancing to more complex topics. The topics are discussed in paired sections, one discussing the theory and the next presenting the related experimental methods. A wide range of readers including students and newcomers to the field will gain a clear and practical understanding of how to measure aspects of molecular dynamics such as wave packet motion, intramolecular vibrational relaxation, and electron-electron coupling, and how to describe such measurements mathematically.

Symmetry-resolved Soft X-ray Absorption Spectroscopy

Symmetry-resolved Soft X-ray Absorption Spectroscopy PDF Author: Jun-ichi Adachi
Publisher:
ISBN:
Category :
Languages : en
Pages : 16

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Book Description


X-Ray Absorption and X-Ray Emission Spectroscopy

X-Ray Absorption and X-Ray Emission Spectroscopy PDF Author: Jeroen A. van Bokhoven
Publisher: John Wiley & Sons
ISBN: 1118844238
Category : Science
Languages : en
Pages : 940

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Book Description
During the last two decades, remarkable and often spectacular progress has been made in the methodological and instrumental aspects of x–ray absorption and emission spectroscopy. This progress includes considerable technological improvements in the design and production of detectors especially with the development and expansion of large-scale synchrotron reactors All this has resulted in improved analytical performance and new applications, as well as in the perspective of a dramatic enhancement in the potential of x–ray based analysis techniques for the near future. This comprehensive two-volume treatise features articles that explain the phenomena and describe examples of X–ray absorption and emission applications in several fields, including chemistry, biochemistry, catalysis, amorphous and liquid systems, synchrotron radiation, and surface phenomena. Contributors explain the underlying theory, how to set up X–ray absorption experiments, and how to analyze the details of the resulting spectra. X-Ray Absorption and X-ray Emission Spectroscopy: Theory and Applications: Combines the theory, instrumentation and applications of x-ray absorption and emission spectroscopies which offer unique diagnostics to study almost any object in the Universe. Is the go-to reference book in the subject for all researchers across multi-disciplines since intense beams from modern sources have revolutionized x-ray science in recent years Is relevant to students, postdocurates and researchers working on x-rays and related synchrotron sources and applications in materials, physics, medicine, environment/geology, and biomedical materials