Now showing items 41-47 of 47
Production of a 23S Helium Beam
(The American Institute of Physics, 1969-09)
Beams of metastable helium produced by electron bombardment generally contain atoms in both the 21S and 23S states. It is important in many experiments to distinguish between these states, or at least to know the population ...
Characteristics of Rotationally Stabilized Long Plasma Arcs in a Chamber
(The American Institute of Physics, 1969-08)
An analytical method is developed to determine the gas temperature distribution and the electric field strength‐arc length characteristics of a rotationally stabilized long plasma arc in a cylindrical chamber. The application ...
Hyperfine Structure of Thallium Chloride
(The American Institute of Physics, 1969-03-01)
The radio‐frequency spectra of TlCl at very weak electric and magnetic fields have been measured with a molecular beam electric resonance spectrometer. From these spectra the hyperfine interaction constants for the four ...
Simple Extrusion Die for in vacuo Production and Explosion of Lithium Wires
(The American Institute of Physics, 1969-07)
Molecular Freedom of the Ammonium Ion. Heat Capacity and Thermodynamic Properties of Ammonium Perchlorate from 5°–350°K
(The American Institute of Physics, 1969-06-15)
The heat capacity of NH4ClO4 has been determined by adiabatic calorimetry from 5°–350°K and found to be of simple sigmate character without thermal anomalies. The heat capacity (Cp)(Cp), entropy (S°)(S°), enthalpy function ...
Instability of Three‐Layer Viscous Stratified Flow
(The American Institute of Physics, 1969-12)
Instability of plane Couette flow of three superposed layers of fluids of different viscosity between two horizontal planes is investigated. It is found that there are two modes of disturbance dominated, respectively, by ...
Stability of Two Superposed Elasticoviscous Liquids in Plane Couette Flow
(The American Institute of Physics, 1969-03)
It is found that the elasticity in the liquid cannot only destabilize the flow, but it can also stabilize the flow for certain values of depth ratio, viscosity ratio, and elasticity ratio. The stabilizing or destabilizing ...