X-ray spectroscopy is used on the National Ignition Facility (NIF) to diagnose the plasma conditions in the hot spot and the compressed shell of ignition-scale inertial confinement fusion (ICF) implosions. Ignition of an ICF target depends on the formation of a central hot spot with sufficient temperature and areal density. The concentric spherical layers of current NIF ignition targets consist...

First-principles calculations are performed to identify the pristine and Si doped 3D metallic T6 carbon structure (having both sp2 and sp3 type hybridization) as a new carbon based anode material. The π electron of C2 atoms (sp2 bonded) forms an out of plane network that helps to capture the Li atom. The highest Li storage capacity of Si doped T6 structure with conformation Li1.7Si1C5 produces ...

Electromigration in Ge2Sb2Te5 and N-doped line cell structures has been studied by mapping out electric field/current-induced composition changes using x-ray energy dispersive spectroscopy. Both materials exhibit pronounced segregation a molten state, with Te moving toward the anode Ge Sb cathode. The width of transition region from over 90% to Ge–Sb was 500 nm for an field 1.1 × 107 V/m. In Ge...

Investigation of the Structural and Optical Properties of Ge-doped SbTe Films with Various Sb:Te Ratios Tae Dong Kang, Andrei Sirenko, Jun-Woo Park, Hyun Seok Lee, Suyoun Lee, Jeung-hyun Jeong, Byung-ki Cheong, and Hosun Lee Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA Department of Applied Physics, Kyung Hee University, Yong-In 446-701, Korea Electro...

The role of rotational alignment during grating writing is comprehensively examined by the measurement of core luminescence from a Ge-doped 12 ring photonic crystal fibre, computer simulation of transmission and, definitively, by inscription of gratings at three angles– 0°, 30° and the optimum luminescent angle for this fibre, 21.5°. All experimental results were in accordance with each other a...