Now showing items 21-30 of 66
Contribution to the Theory of Frenkel Excitons in Disordered Molecular Crystals
(The American Institute of Physics, 1971-10-01)
In this paper, we discuss the Frenkel excitons in disordered molecular crystals. Most of our results can be generalized to cover electrons and phonons in other disordered systems as well. In particular, the relationship ...
A radiomimetic effect of hydrogen peroxide on bacterial luminescence
(Elsevier, 1971-05)
Hydrogen peroxide (H2O2) in appropriate doses was found to mimic the reversible X-ray suppression of bacterial luminescence. Catalase protected against this suppression both by X-rays and H2O2, but albumin did not. ...
Structure and Conformation of Trimethylphosphine
(The American Institute of Physics, 1971-09-15)
Multiphonon effects in paraelectric relaxations
(Elsevier, 1971-01-15)
A theory is presented for the temperature dependence of the relaxation rate of paraelectric impurities in alkali-halides. The impurity is regarded as a two-level system coupled linearly to a phonon field. The relaxation ...
Intermediate W bosons, gauge fields, and the nonleptonic weak decays
(Elsevier, 1971-02)
Following the analysis of Nishijima and Sato, we use the chiral symmetric gauge field model to compute the s-wave amplitudes of the nonleptonic weak decays. It is pointed out that the weak interaction Lagrangian which has ...
Isospin invariance in the reaction n + p --> [pi][deg] + d
(Elsevier, 1971-04-26)
A measurement of the differential cross section for the reaction n + p --> d + [pi][deg] has been made using a neutron beam with kinetic energies up to 720 MeV. The angle and momentum of the deuterons were measured using ...
Density Distribution Measurements in Rarefied Gases Contained between Parallel Plates at High Temperature Differences
(The American Institute of Physics, 1971-03)
Density distributions were experimentally determined in rarefied gases at rest contained between two parallel plates maintained at widely different temperatures. The temperatures of the hot and cold plates were ∼ 79°K∼79°K ...
SPACE‐CHARGE RECOMBINATION OSCILLATIONS IN DOUBLE‐INJECTION STRUCTURES
(The American Institute of Physics, 1971-03-15)
The small‐signal impedance is derived for a double‐injection structure operating in the low‐injection square‐law regime. Space‐charge effects are found to be essential. Spontaneous voltage oscillations are found to occur ...
Metastable Atom Probe for Measurement of Electron Beam Density Profiles
(The American Institute of Physics, 1971-03)
A well collimated thermal beam of argon atoms, moving in the z direction, crosses the electron beam that is to be studied. Those argon atoms that are excited by impact to a metastable state proceed, with very little change ...