this paper investigates axial compression process of multi-layered tubes with circular cross-section under the axial loading in the quasi-static condition using experimental method. some specimens are prepared in seven different groups, namely; empty carbon/epoxy composite tubes, solid carbon/epoxy composite rods, empty copper tubes, composite tubes with silicon sealant filler, concentrically s...

The present work aims to develop a semi-analytical method to calculate the absorbed dose delivered by alpha particles in a cylindrical geometry. This method will be employed to reproduce the dose conversion coefficients or absorbed fraction of alpha particles in sensitive cells of the tracheobronchial tree obtained by NRC and ICRP, respectively. The difference caused by using water stopping pow...

In Tore Supra detailed radial-poloidal mapping of antenna-SOL interaction zones are made in a single shot using a retarding field analyzer (RFA) or Mach probe. A retarding field analyzer was used during LH current drive experiments to provide direct measurements of the particle and power fluxes of suprathermal electrons emanating from the region in front of the LH grill. When one of the active ...

Thermal electron transport plays an important role in the performance of direct-drive inertial-confinement-fusion targets. The laser energy absorbed in the corona is carried into the dense target through thermal electron transport and is converted into kinetic energy through the ablation process. The efficiency of the target drive and of the absorption of the laser light depend to a large exten...

The fraction of photosynthetically active radiation (FPAR) absorbed by vegetation – a key parameter in crop biomass and yields as well as net primary productivity models – is critical to guiding crop management activities. However, accurate and reliable estimation of FPAR is often hindered by a paucity of good field-based spectral data, especially for corn crops. Here, we investigate the relati...