Direct measurement of the inelastic neutron acceleration by177mLu

The Cross Section of Inelastic Neutron Acceleration for Indium Isomers

The cross sections of inelastic neutron acceleration have been obtained from the excitation curves for ’ * %r’ and ’ ’ 5mIn using the principle of detailed balance, and have been calculated theoretically. The average energy transferred to the neutron in a single collision is positive below 0.25 MeV and both isomers are not the usual moderators, but are the “accelerators” of neutrons. If a neutr...

Direct Measurement of Neutron - Star Recoil in the Oxygen - Rich

A sequence of three Chandra X-ray Observatory High Resolution Camera images taken over a span of five years reveals arc-second-scale displacement of RX J0822–4300, the stellar remnant (presumably a neutron star) near the center of the Puppis A supernova remnant. We measure its proper motion to be 0.159 ± 0.017 arcsec yr −1 toward the west-southwest. At a distance of 2 kpc, this corresponds to a...

DIRECT MEASUREMENT OF ko FOR MONITOR NEUTRON ACTIVATION ANALYSIS

This paper inlroduces the thermal column or the cold neutron guide beam of the 20 MW NBSR at the National Institute of Standards and Technology as a direct k o measurement facility. Measurement of k o at this facility not only produces accurate values, but avoids the additional correction factors needed in other measurement methods. The ko of Sb, Ag and Cr with respect to Sc as monitor have bee...

Inelastic Neutron Scattering Study of Mn12-Acetate

We report zero-field inelastic neutron scattering experiments on a deuterated powder sample of Mn12-Acetate consisting of a large number of nominally identical spin-10 magnetic clusters. Our resolution enables us to see a series of peaks corresponding to transitions between the anisotropy levels within the spin-10 manifold. A fit to the spin Hamiltonian H = −DS z − μBB · g · S −

Inelastic neutron scattering selection rules of αHgI2