The folding formalism for the nucleon-nucleus optical potential and inelastic form factor is applied to study elastic and inelastic proton scattering on 30−40S isotopes. A recently developed realistic density dependent M3Y interaction, well tested in the folding analysis of nucleus-nucleus elastic and inelastic scattering, is used as effective NN interaction. The nuclear ground state and transi...

We have studied the collective short wavelength dynamics in deuterated 1,2-dimyristoyl-sn-glycero-3-phoshatidylcholine (DMPC) bilayers by inelastic neutron scattering. The corresponding dispersion relation variant Planck's over 2pi omega(Q) is presented for the gel and the fluid phase of this model system. The temperature dependence of the inelastic excitations indicates a phase coexistence bet...

Computational tools for normal mode analysis, which are widely used in physics and materials science problems, are designed here in a single package called NMscatt (Normal Modes & scattering) that allows arbitrarily large systems to be handled. The package allows inelastic neutron and X-ray scattering observables to be calculated, allowing comparison with experimental data produced at large sca...

We show that in resonant inelastic x-ray scattering (RIXS) at the copper L and M edge direct spin-flip scattering is in principle allowed. We demonstrate how this possibility can be exploited to probe the dispersion of magnetic excitations, for instance magnons, of cuprates such as the high T(c) superconductors. We compute the relevant local and momentum dependent magnetic scattering amplitudes...

The authors use inelastic neutron scattering to show that the lattice anharmonicity in a single crystal of complex type-I clathrate structure depends on transverse versus longitudinal phonon polarizations.

Measurements and calculations of beam attenuation and background scattering for common materials placed in a neutron beam are presented over the temperature range of 300-700 K. Time-of-flight (TOF) measurements have also been made, to determine the fraction of the background that is either inelastic or quasi-elastic scattering as measured with a 3He detector. Other background sources considered...

A measurement of the nucleon spin asymmetries from deep inelastic scattering of polarized electrons by polarized 3He has been performed. The neutron spin structure function gy is extracted and used to test the Bjorken sum rule. The neutron integral assuming a simple Begge theory extrapolation at low x is Ji gy(x)dx = -0.022f 0.011. Combined with the EMC proton results, the Bjorken sum rule pred...

The inverted geometry time-of-flight spectrometer NERA designed for simultaneous investigation of elastic and inelastic neutron scattering was constructed on a 100 meter long flight path of the IBR-2 reactor at JINR, Dubna, Russia. Spectrometer parameters were optimized for the thermal neutron spectrum of a water moderator at 330 K. Recently, a new type of cold neutron source operating at 30 K ...

A brief review of antiproton–nucleus physics is presented. Some topics are related to early LEAR experiments, and others to more recent measurements or proposals. These include: exotic molecules, elastic and inelastic scattering, deep annihilation, strangeness production, neutron–antineutron oscillations, halo nu-clei, antiproton production in nuclear reactions etc.

We will study the magnetic correlations in the geometrically frustrated antiferromagnetic spinel CdCr2O4 using inelastic neutron scattering. In so doing, we will gain an an understanding of the principles of Triple-Axis Spectroscopy (TAS) and learn how to analyze the TAS data obtained to extract physical information about the system being studied.