Lower resolution Laue neutron data yield correct nanocluster formulations

Crystals of trp repressor suitable for high-resolution neutron Laue diffraction studies.

Crystallization and preliminary neutron-diffraction measurements of wild-type variant Val58-->Ile of the Escherichia coli trp repressor are reported. A vapor-diffusion chamber suitable for initial protein-solution Volumes in the range 0.2-0.5 ml was used to grow cube-shaped crystals with edge dimensions in the range 0.8-1.4 mm. Neutron Laue measurements to a nominal resolution of 2.1 A were rec...

High-resolution Laue-type DuMond curved crystal spectrometer.

We report on a high-resolution transmission-type curved crystal spectrometer based on the modified DuMond slit geometry. The spectrometer was developed at the University of Fribourg for the study of photoinduced X-ray spectra. K and L X-ray transitions with energies above about 10 keV can be measured with an instrumental resolution comparable to their natural linewidths. Construction details an...

Resolution effects and analysis of small-angle neutron scattering data

High-Yield D-T Neutron Generator

A high-yield D-T neutron generator has been developed for neutron interrogation in homeland security applications such as cargo screening. The generator has been designed as a sealed tube with a performance goal of producing 5·10 n/s over a long lifetime. The key generator components developed are a radio-frequency (RF) driven ion source and a beamloaded neutron production target that can handl...

High-Yield Z-Pinch Thermonuclear Neutron Source

Introduction: Neutron beams are useful for many applications, from noninvasive imaging and characterization of materials to producing medical isotopes and detecting hidden explosive devices. Some applications require high-energy neutrons created in fusion nuclear reactions between deuterium (D) and tritium (T). To achieve thermal fusion, deuterium or DT plasma must be heated to about 10 8 K, wh...