Now showing items 61-70 of 70
A vibrational analysis of crystalline trans‐1,4‐polybutadiene
(The American Institute of Physics, 1975-10)
The normal vibrations of crystalline trans‐1,4‐polybutadiene have been calculated by combining interchain atom‐atom potentials with the previously proposed intrachain force field. These calculations have been used to analyze ...
Classifying relative equilibria. III
(Kluwer Academic Publishers; D. Reidel Publishing Company ; Springer Science+Business Media, 1975-12)
We announce several theorems on the evolution of relative equilibria classes in the planar n-body problem. In an earlier paper [1] we announced a partial classification of relative equilibria of four equal masses. In [2] ...
Total and Elastic Cross‐Sections at High Energy
(The American Institute of Physics, 1975-11-01)
The (3He, n) reaction in the lower 2s1d shell
(Elsevier, 1975-12-22)
The two-proton transfer reaction (3He, n) has been measured on four gas targets, 16O, 18O, 20Ne, and 22Ne, with an incident 3He energy of 18.3 MeV. The data were taken with a neutron time-of-flight spectrometer in the ...
Digitally programmable ratio transformer bridge
(The American Institute of Physics, 1975-12)
We describe a digitally programmable impedance bridge, used here for low‐temperature resistance thermometry, and a compatible digital programming and data logging interface. The bridge employs a commercial programmable ...
Toroidal MHD equilibria and classical diffusion in complex magnetic configurations
(IOP Publishing Ltd, 1975-12-01)
Ideal MHD equilibrium for toroidal plasma situated in a magnetic field with single non-planar magnetic axis with variable torsion and curvature is investigated. The plasma is taken to have a non-circular cross section ...
Electron-positron annihilation: Statistical and thermodynamic considerations
(Elsevier, 1975-06-09)
Lightcone considerations suggest that, in e+e- annihilation, the hadronic matter is initially created within a spatial volume in the c.m. frame of the order of E-3, where E/2 is the colliding beam energy. Its implications, ...
Direct NO2 photolysis rate monitor
(The American Institute of Physics, 1975-04)
An optically thin actinometer is described which measures the rate of photolysis of NO2 in air. Operating details of the device are reported together with a test in downtown Detroit. The result was that the instrument was ...
Fe3O4 Verwey transition. Calorimetric determination of the effects of concentration of Zn and Cd dopants
(The American Institute of Physics, 1975-04)
To determine the effect of increase of the lattice constant and decrease in electron concentration on the Verwey transition in Fe3O4, heat capacity measurements have been made on Zn− and Cd−doped Fe3O4 from 5 to 350 K. ...
Hyperfine structure in the red emission system of NbN
(The American Institute of Physics, 1975-10-01)
A detailed study of hyperfine structure observed in the 0,0 band of the 3Φ (aβ) →3Δ (aβ) system of NbN has shown that the secondary hyperfine effects observed in this structure are not due to a perturbation in the 3Δ state ...