Now showing items 21-30 of 45
Single Crystal Transfer Device and Rotation System for ESR Measurements
(The American Institute of Physics, 1969-02)
A device has been designed for the transfer and rotation of single crystals so that angular dependent ESR data can be obtained with a stationary magnet and rectangular cavity. The apparatus consists of a modified Donnay ...
ESR Spectrum of the 9‐Molybdomanganate(IV) Ion in Dilute Single Crystal
(The American Institute of Physics, 1969-05-01)
The ESR spectrum of a single crystal of (NH4)6[NI(IV)O6Mo9O26]⋅8H2O containing 1% (NH4)6‐[Mn(IV)O6Mo9O26]⋅8H2O has been investigated. This is the first ESR report on quadrivalent manganese in a chemically well‐characterized ...
Nonlinear Perturbations
(The American Institute of Physics, 1969-06)
The perturbation theory of Bogoliubov and Mitropolsky for systems having a single rapid phase is generalized to systems having several rapid phases. It is shown that one can avoid the classic problem of small divisors to ...
Effect of recoil on the velocity distribution of metastable atoms produced by electron impact
(Elsevier, 1969-10-06)
We have shown both experimentally and by a simple kinematic argument that the velocity distribution in a beam of metastable atoms produced by electron bombardment of ground state atoms deviates strongly from the velocity ...
Partially Alternate Derivation of a Result of Nelson
(The American Institute of Physics, 1969-01)
The result of Nelson that the total Hamiltonian is semibounded for a self‐interacting Boson field in two dimensions in a periodic box is derived by an alternate method. It is more elementary in so far as functional integration ...
Spin Directions in Pure Chromium
(The American Institute of Physics, 1969-03-01)
We have carried out a triple‐axis polarized‐neutron‐beam experiment with polarization analysis of the final beam and magnetic fields to 15 kG applied to a pure Cr single crystal. The purpose was to determine whether the ...
Electron Densities from Gas‐Phase Electron Diffraction Intensities. II. Molecular Hartree–Fock Cross Sections
(The American Institute of Physics, 1969-10-01)
Differential cross sections for electron scattering based on molecular Hartree–Fock electron densities are compared with cross sections based on the independent‐atom approximation for the molecules C2, N2, O2, F2, and CO. ...
Electron‐Diffraction Structural Study of Polymeric Gaseous Hydrogen Fluoride
(The American Institute of Physics, 1969-04-15)
Electron diffraction patterns with molecular interference features extending beyond s = 35Å−1s=35Å−1 were obtained for gaseous self‐associated HF introduced under its own vapor pressure at −19° and at +22°C through a ...
Electron Densities from Gas‐Phase Electron Diffraction Intensities. I. Preliminary Considerations
(The American Institute of Physics, 1969-10-01)
The intensity of electrons and x rays scattered by a freely rotating molecule is determined, in the kinematic approximation, solely by the nuclear–nuclear, electron–nuclear, and electron–electron radial distribution functions ...
Relationships among Generalized Phase‐Space Distributions
(The American Institute of Physics, 1969-02)
The generalized phase‐space distributions, including the Wigner distribution, are presented in terms of expected values of generating operators. A generalization of the Weyl correspondence is obtained to provide expressions ...