Prompt gamma rays from fast neutron inelastic scattering on aluminum, titanium and copper

Ultrahigh Energy Cosmic Rays and Prompt TeV Gamma Rays from Gamma Ray Bursts

Gamma Ray Bursts (GRBs) have been proposed as one possible class of sources of the Ultrahigh Energy Cosmic Ray (UHECR) events observed up to energies >∼ 10 eV. The synchrotron radiation of the highest energy protons accelerated within the GRB source should produce gamma rays up to TeV energies. Here we briefly discuss the implications on the energetics of the GRB from the point of view of the d...

Neutron Capture Gamma Rays ( Thermal Neutron

Detection of landmines using nuclear techniques has been studied extensively since the late 1940s. Nuclear techniques look at either a return radiation, which is characteristic of explosive components that are infrequently found in soil (e.g., nitrogen or carbon), or an intensity change of a noncharacteristic scattered radiation, which is a function of a parameter that differs between soil and ...

Inelastic neutron scattering from the spin ladder compound (VO)2P2O7.

Molecular Dynamics Calculation of Neutron Inelastic Scattering from Water*

The data generated by a molecular dynamics calculation on liquid water at 1 gm CM-3 and 10 °C have been used to simulate a neutron inelastic scattering experiment on water. It is shown that already at K '' 1 A-i the function w 2Snc(K, w)/K 2 i5 a good replica of the spectrum of proton velocity autocorrelation . It is emphasized that the separation of (K, o) into quasielastic and inelastic parts...

Phonons in aluminum at high temperatures studied by inelastic neutron scattering

Inelastic neutron scattering measurements on aluminum metal were performed at temperatures of 10, 150, 300, 525, and 775 K using direct-geometry Fermi chopper spectrometers. The temperature dependent phonon density of states DOS was determined from the scattering, and was used to fit Born–von Kármán models of lattice dynamics. The shifts in the phonon frequencies with increasing temperature wer...