Now showing items 31-40 of 444
Intermolecular Vibrations in Liquid Secondary Chlorides
(The American Institute of Physics, 1970-04-15)
The 40Ar([tau], n)42Ca reaction
(Elsevier, 1974-05-13)
The results of an investigation of the 40Ar([tau], n)42Ca reaction at 18.65 MeV incident energy are reported. The weakness of the transition to the 1.84 MeV 0+ level is in disagreement with 4p-2h descriptions of this state.
Interferometric characterization of density dynamics of an ultradense Z‐pinch plasma
(The American Institute of Physics, 1979-04)
We have measured the spatially and temporally resolved density in a Z‐pinch plasma by holographic interferometry. The high electron density (4×1019 e/cm3), short density scale length (100 μm), and low temperature (about ...
Structure of the Wigner 9j Coefficients in the Bargmann Approach
(The American Institute of Physics, 1972-01)
Bargmann's treatment of the Clebsch‐Gordan (3j) and Racah (6j) coefficients is here extended to the case of Wigner 9j coefficients. The generating function for the 9j coefficient is computed by the analytic method. The ...
Structure of the Generalized Veneziano Amplitudes. II. Possible Group Theoretic Content
(The American Institute of Physics, 1971-10)
An attempt is made to generalize a result of Vilenkin that the beta function (being adopted as Veneziano formula for four‐particle processes) appears as the kernel (in the integral) of the irreducible representation (in ...
Optical alignment procedure for an unstable resonator high‐power laser
(The American Institute of Physics, 1977-12)
A method for aligning the optics of a pulsed high‐power positive branch unstable resonator is described. The procedure relies on the distribution of the output beam and is thus independent of a separate alignment laser, ...
Turbulent buoyant plumes
(The American Institute of Physics, 1977-08)
The velocity and temperature distributions in turbulent buoyant induced by a line source or point source of heat are calculated by assuming the eddy viscosity and eddy diffusivity to be constant in any cross section of the ...
Redundancy modulation for coherent imaging systems
(Elsevier, 1973-01)
In order to image continuous-tone transparencies with coherent light, special types of diffuse speckle-free illumination are required to achieve high image quality. Several types of speckle-free modulation have been ...
On the bound states of the massless free field in two space-time dimensions
(Elsevier, 1976-12-06)
We point out the peculiar kinematics of zero-mass fields in two space-time dimensions by showing that the n-fold tensor product of one-particle representations of the Poincare group for n [ges] 2 contains a countable ...
Measurements of hyperpolarizabilities for some halogenated methanes
(The American Institute of Physics, 1974-01-15)
dc Electric‐field induced optical second‐harmonic generation has been measured for CH4, CH3F, CH2F2, CHF3, CF4, CClF3, and CBrF3. For CH4 and CF4 the third order hyperpolarizability χ(−2ω; 0,ω,ω) is obtained directly. For ...