Pii: S0022-3697(99)00337-6
نویسندگان
چکیده
We describe the design of an instrument for the investigation of sample dynamics: the SPring-8 High Resolution Beamline (BL35XU). The primary purpose of the beamline is high resolution (,meV) inelastic X-ray scattering measurements. The secondary purpose is nuclear resonant scattering measurements. Construction of the beamline will begin in the summer of 1999 and commissioning will start in the spring of 2000. q 2000 Elsevier Science Ltd. All rights reserved.
منابع مشابه
Pii: S0022-3697(99)00313-3
A variational method for many-electron system is applied to momentum distribution calculations. The method uses a generating two-electron geminal and the amplitudes of the occupancies of one particle natural orbitals as variational parameters. It introduces correlation effects beyond the free fermion nodal structure. q 2000 Elsevier Science Ltd. All rights reserved.
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A summary of some recent results of neutron scattering studies of high temperature superconductors is given, with a focus on resonant spin excitations in the superconducting states of YBa2Cu3O61x and Bi2Sr2CaCu2O81d . The opportunities offered by advances in neutron scattering instrumentation, such as focusing and polarization techniques, for these experiments are discussed. q 1999 Published by...
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A method is presented for solving the Bloch equation for Morse potential, based on the application of Fourier transformation of the density matrix. The results obtained agree completely with the results obtained by other methods, however its advantage lies in its elegance and intuitivity of the approach. q 2000 Elsevier Science Ltd. All rights reserved.
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Periodic intensity variations in the measured Compton profile anisotropies of ordinary ice Ih correspond to distances of 1.8 and 3.0 Å, which are close to the hydrogen bond length and the nearest-neighbor O–O distance, respectively. We interpret this result as direct evidence for the covalent nature of the hydrogen bond. Very good quantitative agreement between the data and a fully quantum mech...
متن کاملPii: S0022-3697(99)00300-5
The “virtual crystal” (VC) approach is a tractable way of studying configurationally disordered systems; the potentials which represent atoms of two or more elements are averaged into a composite atomic potential. This approach has the advantage that a single configuration with a smaller unit cell represents the disordered system. However, due to the different local environment of the virtual a...
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