Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Bertram N. Brockhouse"'
Autor:
Bertram N. Brockhouse
Publikováno v:
Reviews of Modern Physics. 67:735-751
This lecture was delivered 8 December 1994, on the occasion of the presentation of the 1994 Nobel Prize in Physics. This written version covers the same ground, though sometimes in different order, with a little additional material. (AIP)
Publikováno v:
Solid State Communications. 5:211-216
The frequency-wave vector dispersion relations of the lattice vibrations in the symmetry directions of body centred cubic iron at room temperature have been measured by means of neutron inelastic scattering. Most of the measurements were made with th
Publikováno v:
Physical Review. 98:1721-1727
Publikováno v:
Solid State Communications. 3:245-249
Using neutron scattering, we have studied the lattice vibrations of a Cu90.7 Au9.3 single crystal. The phonons are asym-metric, broader than, and lower in frequency than the corresponding pure Cu phonons. The experimental results are compared with th
Autor:
Bertram N. Brockhouse
Publikováno v:
Journal of Physics and Chemistry of Solids. 8:400-405
By study of the energy distribution of neutrons scattered by a single crystal it is possible to determine the frequency-wave number relation (ν ( q ) relation) of the normal modes of the crystal. In this paper the ideas involved are reviewed, and di
Autor:
Bertram N. Brockhouse
Publikováno v:
Canadian Journal of Physics. 31:432-452
A method is described for measurement, as a function of neutron energy, of the scattering cross section for slow neutrons of materials having high absorption. The necessary corrections are discussed. The results are normalized to a vanadium scatterin
Autor:
Bertram N. Brockhouse, E.D. Hallman
Publikováno v:
Canadian Journal of Physics. 47:1117-1131
Using inelastic scattering of slow neutrons, the frequency-wavevector dispersion relations for the lattice vibrations in the face-centered cubic alloys Ni3Fe, Ni0.5Fe0.5, Ni0.3Fe0.7, and Cu3Zn have been measured at 296 °K. Measurements were also mad
Autor:
Bertram N. Brockhouse, D. G. Hurst
Publikováno v:
Physical Review. 88:542-547
The sharp dependence on energy of the cadmium cross section for neutrons of energies near 0.35 ev has been used to investigate the energy distribution of 0.35-ev neutrons scattered through 90\ifmmode^\circ\else\textdegree\fi{} by lead, aluminum, diam
Publikováno v:
Canadian Journal of Physics. 50:2915-2927
The dispersion relations in platinum have been measured at 90 °K by the inelastic scattering of thermal neutrons. Born–von Kármán models of the force system have been calculated by fitting to the dispersion curves. Fourth-neighbor forces, with w
Autor:
Bertram N. Brockhouse
Publikováno v:
Canadian Journal of Physics. 31:339-355
In an attempt to resolve apparent discrepancies in the literature the initial susceptibility (χ) and Rayleigh constant (a) of pure nickel wire were measured between room temperature and the Curie point under various tensions (Z). For annealed nickel