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Asymptotic Form Of The Electron Capture Cross Section In First Born And Distorted Wave Approximations
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Book Synopsis Asymptotic Form of the Electron Capture Cross Section in First Born and Distorted Wave Approximations by : R. A. Mapleton
Download or read book Asymptotic Form of the Electron Capture Cross Section in First Born and Distorted Wave Approximations written by R. A. Mapleton and published by . This book was released on 1964 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first Born approximation with both the proton-proton and proton-electron interaction is used to calculate the high energy electron capture cross section. It is shown that the high energy proton-nucleus amplitude has a dominant peak for backward scattering (centre-of-mass system). As a consequence of this peak, if the protons are treated as distinguishable particles, the cross section depends upon the impact energy E as E(3- ) in contrast to the commonly accepted E(6- ) dependence. When the protons are treated as indistinguishable particles, the electron capture cross section is not defined at sufficiently high energies. This same cross section is also calculated using the distorted wave approximation as developed by Bassel and Gerjuoy in 1960. It is shown that the proton-nucleus amplitude is only cancelled in the forward direction, and consequently the electron capture cross section is again not defined at high energies. (Author).
Book Synopsis Asymptotic Form of the Electron Capture Cross Section in First Born and Distorted Wave Approximations by : R. A. Mapleton
Download or read book Asymptotic Form of the Electron Capture Cross Section in First Born and Distorted Wave Approximations written by R. A. Mapleton and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first Born approximation with both the proton-proton and proton-electron interaction is used to calculate the high energy electron capture cross section. It is shown that the high energy proton-nucleus amplitude has a dominant peak for backward scattering (centre-of-mass system). As a consequence of this peak, if the protons are treated as distinguishable particles, the cross section depends upon the impact energy E as E(3- ) in contrast to the commonly accepted E(6- ) dependence. When the protons are treated as indistinguishable particles, the electron capture cross section is not defined at sufficiently high energies. This same cross section is also calculated using the distorted wave approximation as developed by Bassel and Gerjuoy in 1960. It is shown that the proton-nucleus amplitude is only cancelled in the forward direction, and consequently the electron capture cross section is again not defined at high energies. (Author)
Book Synopsis Asymptotic Form of the Electron Capture Cross Section in the Classical Approximation by : D. R. Bates
Download or read book Asymptotic Form of the Electron Capture Cross Section in the Classical Approximation written by D. R. Bates and published by . This book was released on 1964 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been shown that if the protons are regarded as distinguishable particles the asymptotic form of the cross section for H(+) + H(1s) to H(1s) + H(+) in the (nonrelativistic) First Born and distorted wave approximations is Q(1s-1s) = 2Mpi(a-squared) /3m (E-cubed), where E is the energy of the incident proton in atomic units, M is its mass and m is the mass of the electron. A simple classical treatment of this problem is given.
Book Synopsis Asymptotic Form of the Electron Capture Cross Section in the Impulse Approximation by : R. A. Mapleton
Download or read book Asymptotic Form of the Electron Capture Cross Section in the Impulse Approximation written by R. A. Mapleton and published by . This book was released on 1964 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plurality-count Diversity Combining for Fading M-ary Transmissions by : John N. Pierce
Download or read book Plurality-count Diversity Combining for Fading M-ary Transmissions written by John N. Pierce and published by . This book was released on 1965 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of a plurality-count diversity combiner for fading M-ary transmissions is analyzed, and calculated error probabilities are presented graphically for alphabet sizes of 2, 8, and 32. The performance is shown to be within 3 dB of that of an optimum square-law combiner for moderate alphabet sizes when there is no restriction on the allowable number of diversity branches. It is shown that a worthwhile saving in transmitted power can be effected by using nonbinary alphabets with plurality-count combining for the transmission of binary data. The availability of extra information from the combiner for use with error-correction is discussed.
Book Synopsis Electrophoretic Power Generation in Thermally Ionized Plasmas by : C. C. Leiby (Jr.)
Download or read book Electrophoretic Power Generation in Thermally Ionized Plasmas written by C. C. Leiby (Jr.) and published by . This book was released on 1965 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Druyvesteyn's solutions for electrophoretically induced gas flows in electrical discharges in gases were extended over a larger pressure range and corrected for the influence of Debye shielding effects. The effects of molecular or 'slip' flow were also taken into account. These more accurate and general solutions were applied to the reverse phenomenon of space charge field generation arising from the flow of a thermally ionized cesium plasma through a tube. Under such flow conditions, a non-linear differential equation for the axial pressure distribution was obtained but not solved. However, it was possible to obtain estimates of the ranges of cesium pressure, temperature and tube radii which would be required for sensible levels of electric power generation. Anaphoretic flow power levels of the order of 0.1 to 10 watts, in tubes of laboratory dimensions (radii of 10 cm or less), appear feasible at temperatures from 1700 to 2400K. Sensible power generation levels at lower temperatures require very large diameter tubes, and therefore are not feasible. (Author).
Book Synopsis On the Theory of Boolean Formulas by : Lorenzo Calabi
Download or read book On the Theory of Boolean Formulas written by Lorenzo Calabi and published by . This book was released on 1965 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Substitution operators for subformulas of Boolean formulas are introduced and investigated.
Book Synopsis An Evaluation of an Important Advance in Network Synthesis Theory by : E. Folke Bolinder
Download or read book An Evaluation of an Important Advance in Network Synthesis Theory written by E. Folke Bolinder and published by . This book was released on 1965 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of a recent significant advance in network synthesis theory is presented. This 'breakthrough' was accomplished by D. Hazony of the Case Institute of Technology and by D. C. Youla of the Polytechnic Institute of Brooklyn, who independently of each other developed methods for unifying the theory of two-port cascade synthesis. Both methods are based on Richards' theorem, and both introduce the gyrator artificually. Different methods of proof are used, however. A valuable 'cookbook recipe' was developed by Youla. Hazony managed to extend the method to n-ports. In all, this epoch-making achievement has resulted in an important, simple, and beautiful method of network synthesis. (Author).
Book Synopsis Simple High Speed Kinematography of Nanosecond Exposure by : Heinz J. Fischer
Download or read book Simple High Speed Kinematography of Nanosecond Exposure written by Heinz J. Fischer and published by . This book was released on 1965 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Feasible Control Computations Using Dynamic Programming by : Stephen J. Kahne
Download or read book Feasible Control Computations Using Dynamic Programming written by Stephen J. Kahne and published by . This book was released on 1965 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The application of Bellman's dynamic programming technique to realistic control problems has generally been precluded by excessive storage requirements inherent in the method. In this paper, the notion of state mobility is described and shown to be valuable in reducing certain classes of dynamic programming calculations to manageable size. The scheme requires one simple calculation at each stage of the process. IN many cases even this calculation may be omitted. It results in the reduction of the range of allowable state variables to be scanned. The amount of reduction varies from problem to problem. A simple example exhibits a fifty percent reduction. This corresponds to a fifty percent reduction in storage requirements for the problem. Reductions of one or two orders of magnitude appear possible for certain classes of problems.
Book Synopsis Infrared Lattice Vibrations of Magnesium Stannide by : A. Kahan
Download or read book Infrared Lattice Vibrations of Magnesium Stannide written by A. Kahan and published by . This book was released on 1965 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On the Acoustic Basis of the Perception of Intonation by Linguists by : Philip Lieberman
Download or read book On the Acoustic Basis of the Perception of Intonation by Linguists written by Philip Lieberman and published by . This book was released on 1965 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Proposed Method for the Determination of the Standard Free Energy of Formation of a Double Oxide by a Mass Spectrometer by : J. Smiltens
Download or read book A Proposed Method for the Determination of the Standard Free Energy of Formation of a Double Oxide by a Mass Spectrometer written by J. Smiltens and published by . This book was released on 1965 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: An equation for determination of the standard free energy of formation of a double oxide by means of a mass spectrometer has been derived. The quantities required by the equation are (1) the ratio of the intensities of an ion and (2) the ratio of the oxygen pressures at two equilibriums involving the double oxide and the constituent oxides. (Author).
Book Synopsis Infrared Spectra of Crystals by : Peter J. Gielisse
Download or read book Infrared Spectra of Crystals written by Peter J. Gielisse and published by . This book was released on 1965 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of a Scintillation Mechanism by : Kurt Toman
Download or read book A Study of a Scintillation Mechanism written by Kurt Toman and published by . This book was released on 1964 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scintillation was observed during an experiment with an Hg 198 light, a rotating mirror, and a Fabry-Perot interferometer. The mechanism postulated for the phenomenon is an acceleration component in the ray path, caused by curvatures within the mirror surfaces. (Author).
Book Synopsis DEBUG - An Extension to Current Online Debugging Techniques by : Thomas G. Evans
Download or read book DEBUG - An Extension to Current Online Debugging Techniques written by Thomas G. Evans and published by . This book was released on 1965 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method for online assembly-language debugging which greatly simplifies several of the bookkeeping tasks characteristically associated with that process has been developed and implemented in a program for the UNIVAC M-460 computer at Air Force Cambridge Research Laboratories. With this program, an online user may insert or delete (in symbolic assembly language) any number of lines at any point in his previously assembled program in core, with the remainder of the program being relocated appropriately.
Book Synopsis The Control of Electromagnetic Scattering by Impedance Loading by : J. K. Schindler
Download or read book The Control of Electromagnetic Scattering by Impedance Loading written by J. K. Schindler and published by . This book was released on 1965 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
