Author: h s taaiPublisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
contribution of neutral atoms to the absorption of photons in plasmas
Author: h s taaiCONTRIBUTION OF NEUTRAL ATOMS TO THE ABSORPTION OF PHOTONS IN PLASMAS.
Author: H. S. TsaiPublisher:
ISBN:
Category :
Languages : en
Pages : 132
Book Description
The index of refraction and the attenuation coefficient per unit time, as well as per unit length, has been obtained for an arbitrary medium using Maxwell's wave theory. Results are expressed in terms of the microscopic currents due to the motion of the particles in the medium. The contribution of the neutral atoms to the absorption of photons in plasmas has also been investigated by extending the Akcasu and Wald's work on the absorption due to the inverse bremsstrahlung of electrons in the field of neutral atoms to higher electron temperatures and higher photon energies. This problem was formulated by using plane waves for electron wave function. In this way an expression has been obtained for the absorption of coefficient per unit length due to the above absorption mechanism in terms of the elastic and inelastic electron-atom scattering cross sections allowing the atoms initially to be in any excited state. The absorption coefficient has been calculated explicitly for hydrogen atoms; the results are presented graphically as a function of electron temperature and radiation frequency. (Author).
Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1390
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Nuclear Science Abstracts
Author: Research in Progress
Author: Documentation of Plasma Physics. Pt. 1, Experimental Plasma Physics [and] Theoretical Plasma Physics
![Documentation of Plasma Physics. Pt. 1, Experimental Plasma Physics [and] Theoretical Plasma Physics PDF](https://books.google.com/books/content/images/frontcover/Vg0wAQAAIAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category : Plasma (Ionized gases)
Languages : en
Pages : 532
Book Description
U.S. Government Research & Development Reports
Author: Materials Surface Processing by Directed Energy Techniques
Author: Yves PauleauPublisher: Elsevier
ISBN: 0080458963
Category : Technology & Engineering
Languages : en
Pages : 745
Book Description
The current status of the science and technology related to coatings, thin films and surface modifications produced by directed energy techniques is assessed in Materials Surface Processing by Directed Energy Techniques. The subject matter is divided into 20 chapters - each presented at a tutorial level – rich with fundamental science and experimental results. New trends and new results are also evoked to give an overview of future developments and applications. Provides a broad overview on modern coating and thin film deposition techniques, and their applications Presents and discusses various problems of physics and chemistry involved in the production, characterization and applications of coatings and thin films Each chapter includes experimental results illustrating various models, mechanisms or theories
The Alkali Metal Ions: Their Role for Life
Author: Astrid SigelPublisher: Springer
ISBN: 3319217569
Category : Science
Languages : en
Pages : 663
Book Description
MILS-16 provides an up-to-date review of the impact of alkali metal ions on life. Their bioinorganic chemistry and analytical determination, the solid state structures of bio-ligand complexes and the properties of alkali metal ions in solution in the context of all kinds of biologically relevant ligands are covered, this includes proteins (enzymes) and nucleic acids (G-quadruplexes). Minerals containing sodium (Na+) and potassium (K+) are abundant in the Earth's crust, making Na+ and K+ easily available. In contrast, the alkali elements lithium (Li+), rubidium, and cesium are rare and the radioactive francium occurs only in traces. Since the intra- and extracellular, as well as the compartmental concentrations of Na+ and K+ differ significantly, homeostasis and active transport of these ions are important; this involves transporters/carriers and pore-forming ion channel proteins. Systems like Na+/K+-ATPases, H+/K+-ATPases or Na+/H+ antiporters are thoroughly discussed. The role of K+ in photosynthesis and the role of Na+ in charging the "battery of life" are pointed out. Also, the relationships between alkali metal ions and diseases (e.g., Parkinson or traumatic brain injury) are covered and the relevance of Li+ salts in medicine (pharmacology and mechanism) is reviewed. This and more is treated in an authoritative and timely manner in the 16 stimulating chapters of Volume 16, The Alkali Metal Ions: Their Role for Life, which are written by 44 internationally recognized experts from 12 nations. The impact of this vibrant research area is manifested in nearly 3000 references, over 30 tables and more than 150 illustrations (two thirds in color). MILS-16 also provides excellent information for teaching. Astrid Sigel, Helmut Sigel, and Roland K. O. Sigel have long-standing interests in Biological Inorganic Chemistry. Their research focuses on metal ion interactions with nucleotides and nucleic acids and on related topics. They edited previously 44 volumes in the series Metal Ions in Biological Systems.
Author: