147Sm(n, α) Cross Section Measurements from 3 eV to 500 keV: Resonance Neutrons

Scattering of 64 eV to 3 keV neutrons from polyethylene and graphite and the coherence length problem.

We measured the neutron scattering intensity ratios from polyethylene (CH2) relative to graphite (C) at several discrete final energies, of narrow widths (approximately 3 eV) between 64 eV and 3 keV. The final energies were selected using a 238U filter. This experiment was carried out to search for any anomaly in the n-p scattered intensities from CH2 caused by the neutron coherence length. The...

The non-resonant magnetic X-ray scattering cross-section for photon energies up to 500 keV

– Results of high-energy magnetic X-ray diffraction for photon energies up to 500 keV are presented and the form of the magnetic scattering cross-section for relativistic energies is discussed. At 300 keV we experimentally proved that the scattering from the spin component perpendicular to the scattering plane is dominant. Within our statistical and systematic errors, the magnetic scattering am...

Measurements of the neutron - proton and neutron - carbon total cross section from 150 to 800 keV

Cross Section for “Ultracold” Neutrons

Very cold neutrons (typical wavelengths are about 102 Ä) are available by recently developed techniques 2. The features of the scattering of these “ultracold” neutrons are investigated in the present paper discussing a few examples of magnetic scattering. The diffraction of neutrons by the vortex lattice in superconductors is treated as an example of elastic scattering, while in most other case...

Electron Scattering from Disilane (si 2 H 6 ) Molecules. Absolute Total Cross Section Measurements from 1 to 370 Ev Electron Scattering from Disilane (si 2 H 6 ) Molecules. Absolute Total Cross Section Measurements from 1 to 370 Ev

Absolute grand total cross sections (TCSs) for electron–disilane (Si2H6) scattering have been measured over the energy range from 1 to 370 eV in a linear transmission experiment. The low-energy TCS is dominated by a broad resonant-like enhancement. In the region of the maximum the present grand TCS values appeared to be distinctly lower than previously reported integral elastic cross section da...