Development of a Nozzle Beam Containing Atomic Oxygen PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Development of a Nozzle Beam Containing Atomic Oxygen PDF full book. Access full book title Development of a Nozzle Beam Containing Atomic Oxygen by Calvin K. Lam. Download full books in PDF and EPUB format.
Author: Calvin K. Lam Publisher: ISBN: Category : Molecular beams Languages : en Pages : 47
Book Description
Initial studies of the feasibility of producing a hypersonic molecular beam containing appreciable amount of atomic oxygen have been successfully completed. The purpose of the work was to produce a molecular beam which could be used for basic and applied studies related to the interaction of the earth's upper atmosphere, such as accommodation coefficient measurements or surface reactions at high kinetic energy. A quartz tube source was developed for the molecular beam in which a 200 watt microwave discharge could be maintained. The studies included the effect of pressure and orifice size, for which a compromise was involved in order to achieve high Mach numbers and high dissociation levels, the use of double cavities, and the effect of small additions of H2O. It was demonstrated in these initial tests that a hypersonic beam from a 92% He 8% O2 mixture could be produced with 17% dissociation. (Author).
Author: Calvin K. Lam Publisher: ISBN: Category : Molecular beams Languages : en Pages : 47
Book Description
Initial studies of the feasibility of producing a hypersonic molecular beam containing appreciable amount of atomic oxygen have been successfully completed. The purpose of the work was to produce a molecular beam which could be used for basic and applied studies related to the interaction of the earth's upper atmosphere, such as accommodation coefficient measurements or surface reactions at high kinetic energy. A quartz tube source was developed for the molecular beam in which a 200 watt microwave discharge could be maintained. The studies included the effect of pressure and orifice size, for which a compromise was involved in order to achieve high Mach numbers and high dissociation levels, the use of double cavities, and the effect of small additions of H2O. It was demonstrated in these initial tests that a hypersonic beam from a 92% He 8% O2 mixture could be produced with 17% dissociation. (Author).
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A high pressure, supersonic, radio frequency discharge nozzle beam source was developed for the production of intense beams of ground state oxygen atoms. An efficient impedance matching scheme was devised for coupling the radio frequency power to the plasma as a function of both gas pressure and composition. Techniques for localizing the discharge directly behind the orifice of a water-cooled quartz nozzle were also developed. The above combine to yield an atomic oxygen beam source which produces high molecular dissociation in oxygen seeded rare gas mixtures at total pressures up to 200 torr: 80 to 90% dissociation for oxygen/argon mixtures and 60 to 70% for oxygen/helium mixtures. Atomic oxygen intensities are found to be greater than 1017 atom sr−1 sec−1. A brief discussion of the reaction dynamics of 0 + IC1 .-->. I0 + C1 is also presented. 12 references.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 488
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.
Author: John H. Moore Publisher: CRC Press ISBN: 1003803296 Category : Science Languages : en Pages : 1161
Book Description
The Encyclopedia of Physical Chemistry and Chemical Physics introduces possibly unfamiliar areas, explains important experimental and computational techniques, and describes modern endeavors. The encyclopedia quickly provides the basics, defines the scope of each subdiscipline, and indicates where to go for a more complete and detailed explanation. Particular attention has been paid to symbols and abbreviations to make this a user-friendly encyclopedia. Care has been taken to ensure that the reading level is suitable for the trained chemist or physicist. The encyclopedia is divided in three major sections: FUNDAMENTALS: the mechanics of atoms and molecules and their interactions, the macroscopic and statistical description of systems at equilibrium, and the basic ways of treating reacting systems. The contributions in this section assume a somewhat less sophisticated audience than the two subsequent sections. At least a portion of each article inevitably covers material that might also be found in a modern, undergraduate physical chemistry text. METHODS: the instrumentation and fundamental theory employed in the major spectroscopic techniques, the experimental means for characterizing materials, the instrumentation and basic theory employed in the study of chemical kinetics, and the computational techniques used to predict the static and dynamic properties of materials. APPLICATIONS: specific topics of current interest and intensive research. For the practicing physicist or chemist, this encyclopedia is the place to start when confronted with a new problem or when the techniques of an unfamiliar area might be exploited. For a graduate student in chemistry or physics, the encyclopedia gives a synopsis of the basics and an overview of the range of activities in which physical principles are applied to chemical problems. It will lead any of these groups to the salient points of a new field as rapidly as possible and gives pointers as to where to read about the topic in more detail.
Author: Calvin K. Lam
Author: Calvin K. Lam
Author: 
Author: 
Author: 
Author: 
Author: 
Author: 
Author: Gordon N. Patterson
Author: John H. Moore
Author: John H. Moore