Richard H. Howell

TL;DR: In this article, Positron annihilation spectroscopy was employed to study free volume in a Zr-Ti-Ni-Cu-Be bulk metallic glass following plastic straining and cathodic charging with atomic hydrogen.

TL;DR: High-resolution neutron time-of-flight spectroscopy on deuterium clusters shows that they yield fast bursts of nearly monochromatic fusion neutrons with temporal duration as short as a few hundred picoseconds, opening up the unique possibility of using these bright neutron pulses, either as a pump or a probe, to conduct ultrafast studies with neutrons.

TL;DR: In this article, a 35 fs laser pulse was used to irradiate deuterium clusters with van der Waals bonded clusters, and it was found that the fusion neutron yield is strongly dependent on such factors as cluster size, laser focal geometry, and gas jet parameters.

TL;DR: In this article, a high-precision measurement of the basalplane electron-positron momentum density in well oxygenated, twin-free, single crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus delta}} was performed.

TL;DR: The cleaved surfaces of untwinned, single-crystal YBa{sub 2}Cu{sub 3}O{sub 6.9} have been probed with synchrotron-radiation photoemission, utilizing both high energy and angular resolution, and acute spectral structure was observed.