Collisional Effects in the Absorption Spectra of the Oxygen a Band and Nitric Oxide Fundamental Band

Collisional Effects in the Absorption Spectra of the Oxygen a Band and Nitric Oxide Fundamental Band
Author: Robert S. Pope
Publisher:
Total Pages: 307
Release: 1998-12
Genre: Absorption spectra
ISBN: 9781423553922

Fourier transform spectroscopy was used to measure pressure broadening coefficients in the absorption spectra of both the oxygen A band and the nitric oxide fundamental band. Oxygen spectra were recorded with O2, N2, CO, CO2, SF6 and noble gas collision partners, while nitric oxide spectra were recorded using noble gas collision partners. Pressure broadening coefficients were determined in the P and R branches for every resolved line for each of the fifteen collision pairs studied. In addition, broadening coefficients and qualitative evidence of line coupling were found for the Q branch of NO + Ar and pressure-induced line shifting coefficients were measured for O2 + Xe. Elastic and inelastic theories of pressure broadening were used to interpret the observed broadening coefficients. The elastic model showed a strong correlation between the magnitude of the coefficients and the polarizability and mass of the perturber. The inelastic contribution to pressure broadening was modeled using both angular-momentum-based and energy-based fitting laws. The ECS-P and EPGL-O laws provided the best fits to the data. The results indicate that the inelastic component is an important contribution to collisional broadening in diatomic molecules and that angular-momentum transfer is a plausible governing mechanism for the inelastic collisions.

Trace Analysis of Specialty and Electronic Gases

Trace Analysis of Specialty and Electronic Gases
Author: William M. Geiger
Publisher: John Wiley & Sons
Total Pages: 309
Release: 2013-07-15
Genre: Science
ISBN: 1118642570

Explores the latest advances and applications of specialty and electronic gas analysis The semiconductor industry depends upon a broad range of instrumental techniques in order to detect and analyze impurities that may be present in specialty and electronic gases, including permanent gases, water vapor, reaction by-products, and metal species. Trace Analysis of Specialty and Electronic Gases draws together all the latest advances in analytical chemistry, providing researchers with both the theory and the operating principles of the full spectrum of instrumental techniques available for specialty and electronic gas analysis. Moreover, the book details the advantages and disadvantages of each technique, steering readers away from common pitfalls. Featuring contributions from leading analytical and industrial chemists, Trace Analysis of Specialty and Electronic Gases covers a wide range of practical industrial applications. The book begins with the historical development of gas analysis and then focuses on particular subjects or techniques such as: Metals sampling and ICP-MS analysis Improvements in FTIR spectroscopy Water vapor analysis techniques New infrared laser absorption spectroscopy approaches GC/MS, GC/AED, and GC-ICP-MS techniques Gas chromatography columns Atmospheric pressure ionization mass spectrometry Lastly, the book examines gas mixtures and standards that are critical for instrument calibration. There are also two appendices offering information on fittings and material compatibility. With its thorough review of the literature and step-by-step guidance, Trace Analysis of Specialty and Electronic Gases enables researchers to take full advantage of the latest advances in gas analysis. Although the book's focus is the semiconductor and electronics industry, analytical chemists in other industries facing challenges with such issues as detection selectivity and sensitivity, matrix gas interference, and materials compatibility will also discover plenty of useful analytical approaches and techniques.

Physics for the Anaesthetic Viva

Physics for the Anaesthetic Viva
Author: Aman Kalsi
Publisher: Cambridge University Press
Total Pages: 129
Release: 2016-03-31
Genre: Medical
ISBN: 1107498333

A concise book that conveys the essential physics concepts required to pass the FRCA viva examinations, with relevant applied questions.

Anesthesia Equipment E-Book

Anesthesia Equipment E-Book
Author: Jan Ehrenwerth
Publisher: Elsevier Health Sciences
Total Pages: 770
Release: 2013-03-12
Genre: Medical
ISBN: 0323170064

Anesthesia Equipment: Principles and Applications, 2nd Edition, by Dr. Jan Ehrenwerth and Dr. James B. Eisenkraft, offers expert, highly visual, practical guidance on the full range of delivery systems and technology used in practice today. It equips you with the objective, informed answers you need to ensure optimal patient safety. Consult this title on your favorite e-reader with intuitive search tools and adjustable font sizes. Elsevier eBooks provide instant portable access to your entire library, no matter what device you're using or where you're located. Make informed decisions by expanding your understanding of the physical principles of equipment, the rationale for its use, delivery systems for inhalational anesthesia, systems monitoring, hazards and safety features, maintenance and quality assurance, special situations/equipment for non-routine adult anesthesia, and future directions for the field. Ensure patient safety with detailed advice on risk management and medicolegal implications of equipment use. Apply the most complete and up-to-date information available on machines, vaporizers, ventilators, breathing systems, vigilance, ergonomics, and simulation. Visualize the safe and effective use of equipment thanks to hundreds of full-color line drawings and photographs. Access the complete text and images online, fully searchable, at www.expertconsult.com.