Supersonic Nozzle Beams - Some Recent Experimental Results 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 Supersonic Nozzle Beams - Some Recent Experimental Results PDF full book. Access full book title Supersonic Nozzle Beams - Some Recent Experimental Results by J. B. Anderson. Download full books in PDF and EPUB format.
Author: J. B. Anderson Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
The application of molecular beam techniques to a study of the collision processes important in gas dynamics and aerothermochemistry is described. Emphasis is placed on the characteristics of molecular beams formed by a nozzle source. It is shown that the available intensities from nozzle beams are substantially larger than those from classical effusive sources, the spread in molecular velocities in nozzle beams is much more narrow than the corresponding spread in effusion beams, and the nozzle beam energy is larger than that of the effusion beam at the same source temperature. Experimental results are presented which show that nozzle beam energies in excess of 1 ev/particle can be produced by aerodynamic acceleration of heavy molecules in a light gas with the binary gas mixture in the nozzle source near room temperature. The effects of binary mixture mass ratio, source temperature, and specific heat ratio on the attainable beam energy are shown to be adequately described by a simple theory based on the isentropic expansion of a pure gas having a molecular weight corresponding to the concentration-weighted mean for the mixture. The use of nozzle beams as probes and the use of beam velocity analysis are shown to represent a powerful method for the study of relaxation rates of various kinds; e.g., in the exhaust nozzles of various propulsion systems. (Author).
Author: J. B. Anderson Publisher: ISBN: Category : Languages : en Pages : 28
Book Description
The application of molecular beam techniques to a study of the collision processes important in gas dynamics and aerothermochemistry is described. Emphasis is placed on the characteristics of molecular beams formed by a nozzle source. It is shown that the available intensities from nozzle beams are substantially larger than those from classical effusive sources, the spread in molecular velocities in nozzle beams is much more narrow than the corresponding spread in effusion beams, and the nozzle beam energy is larger than that of the effusion beam at the same source temperature. Experimental results are presented which show that nozzle beam energies in excess of 1 ev/particle can be produced by aerodynamic acceleration of heavy molecules in a light gas with the binary gas mixture in the nozzle source near room temperature. The effects of binary mixture mass ratio, source temperature, and specific heat ratio on the attainable beam energy are shown to be adequately described by a simple theory based on the isentropic expansion of a pure gas having a molecular weight corresponding to the concentration-weighted mean for the mixture. The use of nozzle beams as probes and the use of beam velocity analysis are shown to represent a powerful method for the study of relaxation rates of various kinds; e.g., in the exhaust nozzles of various propulsion systems. (Author).
Author: Ilya Prigogine Publisher: John Wiley & Sons ISBN: 0470143959 Category : Science Languages : en Pages : 433
Book Description
The Advances in Chemical Physics series provides the chemical physics and physical chemistry fields with a forum for critical, authoritative evaluations of advances in every area of the discipline. Filled with cutting-edge research reported in a cohesive manner not found elsewhere in the literature, each volume of the Advances in Chemical Physics series serves as the perfect supplement to any advanced graduate class devoted to the study of chemical physics.
Author: David R. Miller Publisher: ISBN: Category : Languages : en Pages : 33
Book Description
A supersonic nozzle molecular beam facility was developed and operated. Design, fabrication and operation of the major components of the vacuum system are described. Several of the important experimental components to be used in beam experiments are also described. Selected performance results are presented which indicate that the system is operating correctly and that beam characteristics are the same as those obtained in other laboratories. (Author).
Author: Jamie Ryan Gardner Publisher: Springer ISBN: 3319684302 Category : Science Languages : en Pages : 121
Book Description
This book describes the design, construction, and characterization of a new type of aberration-corrected, neutral-atom lens. Atom beam control plays a crucial role in many different fields, ranging from fundamental physics research and materials science to applied nanotechnology. Despite this, atom-optical elements like lenses and mirrors remain relatively underdeveloped compared to their counterparts in other optics fields. Although aberration correction is addressed quite comprehensively in photon and electron lenses, no credible research efforts have yet produced the same technology for neutral atoms. It reports on progress towards a neutral atom imaging device that will be useful in a range of applications, including nanofabrication and surface microscopy. It presents a novel technique for improving refractive power and correcting chromatic aberration in atom lenses based on a fundamental paradigm shift from continuous, two-dimensional focusing to a pulsed, three-dimensional approach. Simulations of this system suggest that it will pave the way towards the long-sought goal of true atom imaging on the nanoscale. The book further describes the construction of a prototype lens, and shows that all of the technological requirements for the proposed system are easily satisfied. Using metastable neon from a supersonic source, the prototype was characterized for three different focal lengths and a diverse range of apertures. Despite some manufacturing imperfections, lower distortion and higher resolution than has been shown in any previous hexapole lens was observed. Comparison with simulations corroborates the underlying theory and encourages further refinement of the process.
Author: Isao Yamada Publisher: CRC Press ISBN: 1498711766 Category : Science Languages : en Pages : 260
Book Description
Materials Processing by Cluster Ion Beams: History, Technology, and Applications discusses the contemporary physics, materials science, surface engineering issues, and nanotechnology capabilities of cluster beam processing. Written by the originator of the gas cluster ion beam (GCIB) concept, this book:Offers an overview of ion beam technologies, f
Author: Hans Lüth Publisher: Springer Science & Business Media ISBN: 3642135927 Category : Science Languages : en Pages : 586
Book Description
Solid Surfaces, Interfaces and Thin Films examines both experimental and theoretical aspects of surface, interface and thin film physics. Coverage of magnetic thin films has been expanded, and now includes giant magnetoresistance and the spin-transfer torque mechanism.
Author: J. B. Anderson
Author: J. B. Anderson
Author: 
Author: 
Author: 
Author: Ilya Prigogine
Author: David R. Miller
Author: Jamie Ryan Gardner
Author: Peter William Atkins
Author: Isao Yamada
Author: Hans Lüth