Now showing items 21-30 of 361
Infrared Study of Lamellar Linking by Cilia in Polyethylene Single‐Crystal Mats
(The American Institute of Physics, 1969-10)
The infrared spectra of single‐crystal mats of physical mixtures of polyethylene and perdeuteropolyethylene show splittings of CH2 and CD2 bending and rocking modes which are smaller than those for the pure species. This ...
Addendum: One‐Speed Neutron Transport in Two Adjacent Half‐Spaces
(The American Institute of Physics, 1964-12)
The interface current for the problem of two half‐spaces with a constant source in one half‐space is obtained in closed form.
Determination of Barrier Heights from Low‐Temperature Heat‐Capacity Data
(The American Institute of Physics, 1963-09-01)
A method is presented by which barrier heights, in potential functions hindering the internal rotation of methyl groups, or spectroscopically inactive vibrational frequencies, can be obtained solely from thermal data for ...
Shock Tube Measurement of Pb I Lines
(The American Institute of Physics, 1966-07)
Oscillator strengths of lead atom spectral lines have been measured by observing the radiation emanating from gas samples heated to 10 000°K in a pressure‐driven shock tube. Shocks were produced by allowing hydrogen at ...
Neutron-nuclei total cross sections at 27 GeV/c
(Elsevier, 1968-08-05)
The total cross sections for 27 GeV/c neutrons on eight heavy elements, Be through U, has been measured and found to obey the empirical relationship [sigma]T = 48A0.75mb.
Recoupling Coefficients for the Group SU(3)
(The American Institute of Physics, 1967-01)
The Hilbert space method, employed in the previous article to obtain the coupling coefficients of SU(3), is used here to obtain the recoupling, or 6(λμ), coefficients of SU(3). The coefficients are formulated in terms of ...
Construction of a Shock Tube for Metallic Vapors
(The American Institute of Physics, 1969-05)
The construction and operation of a heated shock tube (often called mercury shock tube due to its immediate application) are described in some detail. Experimental observations of strong shocks in mercury gas are presented ...
Stability of a Horizontal Fluid Interface in a Periodic Vertical Electric Field
(The American Institute of Physics, 1968-07)
The stability of the interface in the presence of a periodic electric field is considered. It is shown that the stability is governed by a Mathieu equation, that the interface can be unstable even if the electric field is ...
VO2+ and X‐Ray Produced V2+ in Tutton Salt
(The American Institute of Physics, 1964-04-15)
The electron spin resonance spectrum of the vanadyl ion (VO2+) in single crystals of Zn (NH4)2(SO4)2⋅6H2O is studied and the properties of x‐ray produced V2+ are compared to those of the V2+ grown directly into the same ...