Time Resolved Soft X Ray Absorption Spectroscopy Of Molecules In The Gas And Liquid Phases

Author : Cédric Schmidt
Publisher : Springer Nature
ISBN 13 : 3030678385
Total Pages : 119 pages
Book Rating : 4.88/5 ( download)

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Download or read book Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases written by Cédric Schmidt and published by Springer Nature. This book was released on 2021-03-19 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : Mattis Fondell
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.46/5 ( download)

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Download or read book Time-resolved Soft X-ray Absorption Spectroscopy in Transmission Mode on Liquids at MHz Repetition Rates written by Mattis Fondell and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Oliver Schalk
Publisher : American Chemical Society
ISBN 13 : 0841299072
Total Pages : 201 pages
Book Rating : 4.78/5 ( download)

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Download or read book Photochemistry written by Oliver Schalk and published by American Chemical Society. This book was released on 2021-03-30 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : Kasra Amini
Publisher : Royal Society of Chemistry
ISBN 13 : 1837671141
Total Pages : 671 pages
Book Rating : 4.44/5 ( download)

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Download or read book Structural Dynamics with X-ray and Electron Scattering written by Kasra Amini and published by Royal Society of Chemistry. This book was released on 2023-12-20 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Zhi-Heng Loh
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.89/5 ( download)

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Download or read book Towards the Study of Ultrafast Chemical Dynamics Using Table-top Femtosecond Time-resolved Soft X-ray Transient Absorption Spectroscopy written by Zhi-Heng Loh and published by . This book was released on 2008 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Renato Torre
Publisher : Springer
ISBN 13 : 9780387506487
Total Pages : 0 pages
Book Rating : 4.89/5 ( download)

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Download or read book Time-Resolved Spectroscopy in Complex Liquids written by Renato Torre and published by Springer. This book was released on 2008-11-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : Thomas Weinacht
Publisher : CRC Press
ISBN 13 : 0429804180
Total Pages : 358 pages
Book Rating : 4.82/5 ( download)

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Download or read book Time-Resolved Spectroscopy written by Thomas Weinacht and published by CRC Press. This book was released on 2018-12-21 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : Craig Philip Schwartz
Publisher :
ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.70/5 ( download)

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Download or read book X-ray Absorption Spectroscopy Study of Prototype Chemical Systems written by Craig Philip Schwartz and published by . This book was released on 2010 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the details of the intensities and spectral shapes of x-ray absorption spectra is a long-standing problem in chemistry and physics. Here, I present detailed studies of x-ray absorption for prototypical liquids, solids and gases with the goal of enhancing our general understanding of core-level spectroscopy via comparisons of modern theory and experiment. In Chapter 2, I investigate the importance of quantum motions in the x-ray absorption spectra of simple gases. It is found that rare fluctuations in atomic positions can be a cause of features in the spectra of gaseous molecules. In Chapter 3, I explore a novel quantization scheme for the excited and ground state potential surfaces for an isolated nitrogen molecule. This allows for the explicit calculation of the "correct" transition energies and peak widths (i.e. without any adjustable parameters). In Chapter 4, the importance of nuclear motion in molecular solids is investigated for glycine. We find that the inclusion of these motions permits the spectrum to be accurately calculated without any additional adjustable parameters. In Chapter 5, I provide a detailed study of the hydroxide ion solvated in water. There has been recent controversy as to how hydroxide is solvated, with two principal models invoked. I show that some of the computational evidence favoring one model of solvation over the other has been either previously obtained with inadequate precision or via a method that is systematically biased. In Chapter 6, the measured and computed x-ray absorption spectra of pyrrole in both the gas phase and when solvated by water are compared. We are able to accurately predict the spectra in both cases. In Chapter 7, the measured x-ray absorption of a series of highly charged cationic salts (YBr3, CrCl3, SnCl4, LaCl3 and InCl3) solvated in water are presented and explained. In Chapter 8, the measured x-ray absorption spectrum at the nitrogen K-edge of aqueous triglycine is presented, including effects of various salts which can alter its solubility. This is used to show that while x-ray absorption is sensitive to salt interactions with small peptides, it is unlikely to be a sensitive probe for overall protein structures, i.e. to distinguish beta sheet from an alpha helix at the nitrogen K-edge. Finally, in Chapter 9 future directions are discussed.

Author : Joachim Stöhr
Publisher : Springer Science & Business Media
ISBN 13 : 3662028530
Total Pages : 415 pages
Book Rating : 4.37/5 ( download)

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Download or read book NEXAFS Spectroscopy written by Joachim Stöhr and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : Joachim Stöhr
Publisher : Springer Science & Business Media
ISBN 13 : 3540302832
Total Pages : 827 pages
Book Rating : 4.34/5 ( download)

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Download or read book Magnetism written by Joachim Stöhr and published by Springer Science & Business Media. This book was released on 2007-01-19 with total page 827 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text book gives a comprehensive account of magnetism, one of the oldest yet most vibrant fields of physics. It spans the historical development, the physical foundations and the continuing research underlying the subject. The book covers both the classical and quantum mechanical aspects of magnetism and novel experimental techniques. Perhaps uniquely, it discusses spin transport and magnetization dynamics phenomena associated with atomically and spin engineered nano-structures against the backdrop of spintronics and magnetic storage and memory applications. The book is for students, and serves as a reference for scientists in academia and research laboratories.