Atomic Energy of Canada Limited

About: Atomic Energy of Canada Limited is a company organization based out in Ottawa, Ontario, Canada. It is known for research contribution in the topics: Neutron & Zirconium alloy. The organization has 4845 authors who have published 4826 publications receiving 102951 citations.

Ising-like spin-½ quasi-one-dimensional antiferromagnets: Spin-wave response in CsCo X 3 salts

Abstract: The spin-wave response of the $S=\frac{1}{2}$ Ising-like antiferromagnetic chain compounds CsCo${\mathrm{Br}}_{3}$ and CsCo${\mathrm{Cl}}_{3}$ has been studied by inelastic neutron scattering. The asymmetry at low temperatures of the line shape of the spin-wave continuum is not correctly predicted by the existing theory of isolated chains to first order in the transverse exchange interaction. The effective spin Hamiltonian for a chain has been rederived and shown to include a slow internal staggered field from exchange mixing that influences the rapid spin fluctuations. Three-dimensional correlations are shown to be important above but close to N\'eel temperature. The first-order calculation of Ishimura and Shiba has been extended to include these effects and numerical calculations made for $0lTl\frac{J}{{k}_{B}}$. A good account is obtained of the spin-wave continuum and its temperature dependence. The results show that the highly asymmetric line shape arises from local staggered fields which vary on a much slower time scale than the transverse spin motion, and whose effect decreases with increasing temperature in the manner expected for the decay of the intrachain and interchain correlations. An improved and simplified account of the Zeeman ladder as seen in the Raman scattering at low temperatures has also been obtained.

g Factors of High-Spin Yrast Traps in Gd 1 4 6 , 1 4 7

Abstract: Pulsed beams of $^{28}\mathrm{Si}$ and $^{4}\mathrm{He}$ were used to determine $g$ factors of eight isomeric states in $^{144,146,147,148}\mathrm{Gd}$ by the time-differential spin-rotation method. The results show that proton and neutron configurations contribute about equally to the generation of angular momenta of two high-spin yrast isomers in $^{146,147}\mathrm{Gd}$ ($I\ensuremath{\sim}19 \mathrm{and} \frac{49}{2}$) whose detailed quasiparticle structure is suggested.

The Transport of Radioactive Corrosion Products in High-Temperature Water II. The Activation of Isothermal Steel Surfaces

Abstract: A mathematical model to describe the contamination of steel surfaces by 60Co in high-temperature water is developed. The model assumes that 60Co is incorporated into the growing oxide film on the s...