Download or read book High resolution Spectroscopy of Formaldehyde written by Martin Zeppenfeld and published by . This book was released on 2006 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A High Resolution Study of the Ultraviolet Absorption Spectrum of Formaldehyde written by David Charles Lindsey and published by . This book was released on 1965 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Resolution Spectroscopy written by J. Michael Hollas and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Resolution Spectroscopy discusses the underlying concepts in the different branches of spectroscopy, especially in high resolution spectroscopy. The coverage of the book includes basic principles such as the quantization of energy, as well as the interaction of electromagnetic radiation with atoms and molecules; general experimental methods and features of instrumentation; and microwave, millimeter wave, and lamb dip spectroscopy. Also covered in the book are subjects such as the principles behind rotational spectroscopy; diatomic and polyatomic molecules in vibrational spectroscopy; and the electronic spectroscopy of atoms, as well as diatomic and polyatomic molecules. The text is recommended for engineers and physicists who would like to know more about the concepts, theories, methods, and instrumentation related to spectroscopy, particularly in the field of high resolution spectroscopy.
Download or read book High Resolution Studies of the 1A2 X 1A1Electronic Transition of Formaldehyde written by Cheryl Tatum Ernest and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Formaldehyde (HCHO) plays a primary role in tropospheric chemistry. Its photochemical activity is an important source of radical species such as HCO, H, and subsequently HO2 as well as molecular hydrogen and carbon monoxide. As a source of hydrogen radicals (HOx = OH + HO2), HCHO plays a significant role in the oxidative capacity of the atmosphere, and an important part in the interrelated chemistries of ozone and the HOx and NOx (NO + NO2) cycles. Accurate atmospheric photolysis rates of HCHO are thus required in order to properly model tropospheric chemistry. Despite extensive studies HCHO's spectroscopy and photochemistry remains to be well characterized. Absolute room temperature absorption cross sections for the A1A2 -- X1A1 electronic transition of formaldehyde have been measured over the spectral range 30285 -- 32890 cm-1 (304 -- 330 nm) using ultraviolet (UV) laser absorption spectroscopy. Absorption cross sections were obtained at an instrumental resolution better than 0.09 cm-1 which is slightly broader than the Doppler width of a rotational line of HCHO at 300K (~0.07 cm-1) and so we were able to resolve all but the most closely spaced lines. Qualitative comparisons with spectral simulations show varying agreement depending on vibronic band. Refined state origins and transition dipole moments for each vibronic band have been reported. There is evidence of areas of perturbation and the need to optimize higher order spectral constants. Pressure broadening parameters have been measured and increase with the strength of intermolecular interaction between formaldehyde and the collision partner. Comparisons between the available high-resolution studies and spectral simulations indicate that the HCHO absorption cross section is still not well characterized. The relative quantum yield for the production of radical products, H+HCO, from the UV photolysis of formaldehyde (HCHO) has been measured directly using a Pulsed Laser Photolysis -- Pulsed Laser Induced Fluorescence (PLP -- PLIF) technique across the same spectral region. Relative yields were normalized to a value of 0.69 at 31750 cm-1 based on the current NASA-JPL recommendation. The resulting absolute radical quantum yields agree well with previous experimental studies and show more wavelength dependent behavior than the recommendation. This provides support for the complicated competition among the various HCHO dissociation pathways.
Download or read book Handbook of High resolution Spectroscopy written by Martin Quack and published by John Wiley & Sons. This book was released on 2011-09-26 with total page 2236 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of High-Resolution Spectroscopy has been considerably extended and even redefined in some areas. Combining the knowledge of spectroscopy, laser technology, chemical computation, and experiments, Handbook of High-Resolution Spectroscopy provides a comprehensive survey of the whole field as it presents itself today, with emphasis on the recent developments. This essential handbook for advanced research students, graduate students, and researchers takes a systematic approach through the range of wavelengths and includes the latest advances in experiment and theory that will help and guide future applications. The first comprehensive survey in high-resolution molecular spectroscopy for over 15 years Brings together the knowledge of spectroscopy, laser technology, chemical computation and experiments Brings the reader up-to-date with the many advances that have been made in recent times Takes the reader through the range of wavelengths, covering all possible techniques such as Microwave Spectroscopy, Infrared Spectroscopy, Raman Spectroscopy, VIS, UV and VUV Combines theoretical, computational and experimental aspects Has numerous applications in a wide range of scientific domains Edited by two leaders in this field Provides an overview of rotational, vibration, electronic and photoelectron spectroscopy Volume 1 - Introduction: Fundamentals of Molecular Spectroscopy Volume 2 - High-Resolution Molecular Spectroscopy: Methods and Results Volume 3 - Special Methods & Applications
Download or read book Rovibrational Analyses of Formaldehyde Formic Acid and Ethylene Isotopologues by High resolution Fourier Transform Infrared FTIR Spectroscopy written by Rabia’tul A’dawiah Mohamed Yazid and published by . This book was released on 2021 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rovibrational Studies of Ethylene and Formaldehyde Isotopologues by High resolution Fourier Transform Infrared FTIR Spectroscopy written by Alicia Li Ling Ng and published by . This book was released on 2019 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Resolution Electronic Spectroscopy of Small Molecules written by Geoffrey Duxbury and published by CRC Press. This book was released on 2017-08-02 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over recent years electronic spectroscopy has developed significantly, with key applications in atmospheric chemistry, astrophysics and astrochemistry. High Resolution Electronic Spectroscopy of Small Molecules explores both theoretical and experimental approaches to understanding the electronic spectra of small molecules, and explains how this information translates to practice. Professors Geoffrey Duxbury and Alexander Alijah present the links between spectroscopy and photochemistry, and discuss theoretical treatments of the interaction between different electronic states. They provide a thorough discussion of experimental techniques, and explore practical applications. This book will be an indispensable reference for graduate students and researchers in physics and chemistry working on theoretical and practical aspects of electronic spectra, as well as atmospheric scientists, photochemists, kineticists and professional spectroscopists.
Download or read book High Resolution Photoelectron Spectroscopy and Femtosecond Intramolecular Dynamics Using Supersonic Molecular Beams written by Baohua Niu and published by . This book was released on 1992 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A High Resolution Infrared Study of Seven Interacting Bands of Formaldehyde in the C H Stretching Region written by Linda Rose Brown and published by . This book was released on 1976 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Resolution Spectroscopy of Small Molecules in the Gaseous State written by G. Wilse Robinson and published by . This book was released on 1970 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary of the author's research is given. It includes the analysis of the formaldehyde singlet-triplet spectrum, techniques for the study of very weak transitions in gas phase molecules, a moderately well-resolved vibronic spectrum of benzene near 2000 Angstroms, and the affect of intermolecular interactions on the measured intensities of the red and infrared electronic transitions of 02.
Download or read book High Resolution Spectroscopy and Radiationless Transition Rates of Single Rovibrational Levels of S1 D2CO written by Joan Katherine Frisoli and published by . This book was released on 1988 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Formaldehyde written by Luoping Zhang and published by Royal Society of Chemistry. This book was released on 2018-05-18 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Formaldehyde is virtually ubiquitous in the modern environment due to its cost-effective nature, its use in resin formation, and its preservative properties. Though formaldehyde is necessary for many products and processes important to the world’s economy, this economic dependence on formaldehyde comes at a cost to public health. Growth and consequent industrialization rely heavily on formaldehyde use. New buildings—residences, public places, and offices—are not only built with timber preserved by formaldehyde, but they are also furnished with wood, wool, and textile products that contain formaldehyde. The general population faces environmental exposure from indoor and outdoor air pollution, food, and even medicine. Scientific inquiry into formaldehyde exposure has grown in response. This book consolidates the new and established body of formaldehyde research in the scholarly community, focusing on exposure, genotoxicity, and adverse health outcomes. Through this resource, we hope to increase awareness of the broad range of health effects posed by formaldehyde exposure, and to encourage interdisciplinary interest, as well as research, into this pervasive compound—especially in the United States and China, where formaldehyde production and usage is high. This book will be useful to researchers of environmental and occupational exposure, students, and government regulators and anyone exposed to formaldehyde in the workplace and/or at home.
Download or read book The Role of Rydberg States in Spectroscopy and Photochemistry written by C. Sándorfy and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this volume is to offer a balanced overview of molecular Rydberg spectroscopy as it has developed over recent decades. Recent evolution has split Rydberg spectroscopy into two apparently distinct fields: the one concerns the low (n=3-5) Rydberg states, the other the very high (typically EMn/EM”150) Rydberg states. The former is aimed at spectral levels where Rydberg, valence-shell, and intermediate-type states interact, with a variety of photochemical consequences. The latter considers states extremely close to the ionization limit, from whereionization is possible with a very slight amount of additional energy. Recently developed techniques make it possible to produce ions in well-defined electronic, vibrational and rotational states, including states resulting from spin-orbit or Jahn-Teller splitting. It is then possible to study the structure and reactions of such state-selected ions as well as those of the corresponding neutral molecules. These techniques amount to badly needed high resolution photoelectron spectroscopy.
Download or read book Laboratory Measurements of Photolytic Parameters for Formaldehyde written by and published by . This book was released on 1980 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comets in the Post Halley Era written by R.L. Newburn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comets are always very impressive phenomena. Their appearances at regular, but mostly irregular, times excite people who see them. Astronomers have the obvious advantage of being able to see more of comets, and to study them. Their enthusiasm is reflected in the 50 papers in this book, written by more than 90 experts. The reviews in this book clearly describe a landmark in the history of cometary studies. Knowledge gathered up to and including Comet Halley are presented in two volumes. The first volume is about general aspects of observing and studying comets, where they originate and how their evolution develops. The second volume goes into the details of what a comet is: the nucleus, the coma, cometary dust, plasmas and magnetic fields. The book ends with a reflection by Fred Whipple about Comets in the Post-Halley Era. The book discusses all aspects of comets and is therefore suitable for use in graduate level courses. All astronomers and geophysicists interested in comets will find very useful and well-presented information in this book.
Download or read book Single and Double resonance Spectroscopy of Formaldehyde by Four wave Mixing and Multiphoton Ionization written by Margarete Meisinger and published by . This book was released on 2009 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
