Fast resistive bolometry

Infrared lmaging Bolometry for Long Pulse Discharges on LHD

This diagnostic, known as the segmented mask infrared imaging bolometer (SIB), uses state-of-theart infrared (IR) imaging technology to measure the temperature rise of each pixel in a two dimensional array mask sandwiching the metal foil. We have designed, constructed, installed and calibrated a version of the SIB for the Large Helical Device (LHD). This diagnostic has a two dimensional view (t...

High Resolution Bolometry on the Alcator C-Mod Tokamak

1 Recent breakthroughs in silicon detector technology now permit measurement of radiated power over a wide range in photon energies. These detectors also known as AXUV photodiodes have a at spectral power response from ultraviolet to X-ray energies, and with a slightly reduced ef-ciency all the way d o wn to visible wavelengths. Since they can be made small, multi-channel detectors allow high s...

Inhibition in the propagation of fast electrons in plastic foams by resistive electric fields.

The propagation of relativistic electrons in foam and solid density targets has been studied by means of K-alpha spectroscopy. Experimental results point out the role of self-generated electric fields in propagation and the role of heating of matter induced by the passage of fast electrons. A simple analytical formulation has been given and Spitzer conductivity has been shown to be fairly compa...

Degenerate Resistive Switching and Ultrahigh Density Storage in Resistive Memory

We show that, in tantalum oxide resistive memories, activation power provides a multi-level variable for information storage that can be set and read separately from the resistance. These two state variables (resistance and activation power) can be precisely controlled in two steps: (1) the possible activation power states are selected by partially reducing resistance, then (2) a subsequent par...

Resistive wall feedback stabilization