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| Author | : Martin B. Crow |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2013 |
| Genre | : Diodes |
| ISBN | : |
| Author | : Martin Brian Crow |
| Publisher | : |
| Total Pages | : 165 |
| Release | : 2012 |
| Genre | : Diodes |
| ISBN | : |
| Author | : Eizi Hirota |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 245 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 3642824773 |
It is a great challenge in chemistry to clarify every detail of reaction processes. In older days chemists mixed starting materials in a flask and took the resul tants out of it after a while, leaving all the intermediate steps uncleared as a sort of black box. One had to be content with only changing temperature and pressure to accelerate or decelerate chemical reactions, and there was almost no hope of initiating new reactions. However, a number of new techniques and new methods have been introduced and have provided us with a clue to the examination of the black box of chemical reaction. Flash photolysis, which was invented in the 1950s, is such an example; this method has been combined with high-resolution electronic spectroscopy with photographic recording of the spectra to provide a large amount of precise and detailed data on transient molecules which occur as intermediates during the course of chemical reac tions. In 1960 a fundamentally new light source was devised, i. e. , the laser. When the present author and coworkers started high-resolution spectroscopic stud ies of transient molecules at a new research institute, the Institute for Molecu lar Science in Okazaki in 1975, the time was right to exploit this new light source and its microwave precursor in order to shed light on the black box.
| Author | : N. T. Hunt |
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| Total Pages | : |
| Release | : 2000 |
| Genre | : |
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| Author | : Willy Persson |
| Publisher | : Springer |
| Total Pages | : 492 |
| Release | : 2013-11-11 |
| Genre | : Science |
| ISBN | : 3540479732 |
The Eighth International Conference on Laser Spectroscopy (EICOLS '87) was held at the Sunwing Hotel in A.re, Sweden, June 22-26; 1987. Fol lowing the traditions ef its predecessors at Vail, Megeve, Jackson Lake, Rottach-Egern, Jasper Park, Interlaken and Maui the intent of EICOLS '87 was to provide a forum for active scientists to meet in an informal at mosphere to discuss recent developments in laser spectroscopy. The scenic and remote location of the conference venue greatly stimulated a lively and relaxed exchange of information and ideas. The conference was attended by 227 scientists from 20 countries includ ing Australia, Austria, Canada, the People's Republic of China, Denmark, Finland, France, the Federal Repulic of Germany, Israel, Italy, Japan, The Netherlands, New Zealand, Norway, Poland, the Soviet Union, Sweden, Switzerland, the United Kingdom and the United States. The scientific program included 14 topical sessions with 50 invited talks, ranging in length from 20 to 40 minutes. About 70 additional in vited contributions were presented in two evening poster sessions. A third evening session included 4 oral and 18 poster post-deadline presentations.
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| Total Pages | : 4 |
| Release | : 1993 |
| Genre | : |
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Work on sub-Doppler spectroscopy of thioformaldehyde is nearing completion; the sub-Doppler structure in the H[sub 2]CS spectrum correlates with previous observations of anomalously long fluorescence lifetimes and reduced quantum yields of fluorescence under collision-free conditions. Singlet-triplet perturbations are large and occur haphazardly when levels in the two states are near- coincidence. High-resolution FTIR spectra of many bands of HCOCl and DCOCl have been recorded. Laser fluorescence on formic acid is being studied. Reactive jet spectroscopy is being used to produce new reactive intermediates in F[sub 2]/Ar gas streams. Preliminary experiments are underway in S[sub 3] and S[sub 4] systems.
| Author | : Matthieu Baudelet |
| Publisher | : Elsevier |
| Total Pages | : 601 |
| Release | : 2014-02-15 |
| Genre | : Technology & Engineering |
| ISBN | : 085709873X |
Laser spectroscopy is a valuable tool for sensing and chemical analysis. Developments in lasers, detectors and mathematical analytical tools have led to improvements in the sensitivity and selectivity of spectroscopic techniques and extended their fields of application. Laser Spectroscopy for Sensing examines these advances and how laser spectroscopy can be used in a diverse range of industrial, medical, and environmental applications. Part one reviews basic concepts of atomic and molecular processes and presents the fundamentals of laser technology for controlling the spectral and temporal aspects of laser excitation. In addition, it explains the selectivity, sensitivity, and stability of the measurements, the construction of databases, and the automation of data analysis by machine learning. Part two explores laser spectroscopy techniques, including cavity-based absorption spectroscopy and the use of photo-acoustic spectroscopy to acquire absorption spectra of gases and condensed media. These chapters discuss imaging methods using laser-induced fluorescence and phosphorescence spectroscopies before focusing on light detection and ranging, photothermal spectroscopy and terahertz spectroscopy. Part three covers a variety of applications of these techniques, particularly the detection of chemical, biological, and explosive threats, as well as their use in medicine and forensic science. Finally, the book examines spectroscopic analysis of industrial materials and their applications in nuclear research and industry. The text provides readers with a broad overview of the techniques and applications of laser spectroscopy for sensing. It is of great interest to laser scientists and engineers, as well as professionals using lasers for medical applications, environmental applications, military applications, and material processing. Presents the fundamentals of laser technology for controlling the spectral and temporal aspects of laser excitation Explores laser spectroscopy techniques, including cavity-based absorption spectroscopy and the use of photo-acoustic spectroscopy to acquire absorption spectra of gases and condensed media Considers spectroscopic analysis of industrial materials and their applications in nuclear research and industry
| Author | : Martin Quack |
| Publisher | : John Wiley & Sons |
| Total Pages | : 2236 |
| Release | : 2011-09-26 |
| Genre | : Science |
| ISBN | : 0470066539 |
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
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| Total Pages | : 6 |
| Release | : 2005 |
| Genre | : Science fiction |
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| Author | : |
| Publisher | : |
| Total Pages | : 4 |
| Release | : 1993 |
| Genre | : |
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Work on sub-Doppler spectroscopy of thioformaldehyde is nearing completion; the sub-Doppler structure in the H2CS spectrum correlates with previous observations of anomalously long fluorescence lifetimes and reduced quantum yields of fluorescence under collision-free conditions. Singlet-triplet perturbations are large and occur haphazardly when levels in the two states are near- coincidence. High-resolution FTIR spectra of many bands of HCOCl and DCOCl have been recorded. Laser fluorescence on formic acid is being studied. Reactive jet spectroscopy is being used to produce new reactive intermediates in F2/Ar gas streams. Preliminary experiments are underway in S3 and S4 systems.
