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Summary form only given: The study of characteristics of hard x-rays and generation of electron beams is very important for high energy density physics (HEDP).The illustration of such a study is performed by using Z-pinch plasma. Specifically, we are studying implosions of different types wire array loads and materials that produce hard X-rays (HXRs) and e-beams. We analyze characteristics of HXR...
Summary form only given. K-shell X-rays have been studied with various materials at the 20-MA (pre-refurbished) Z accelerator. This paper presents results obtained for the ablation dynamics and stagnation physics of single and nested copper z-pinches with varying initial load diameters. Monochromatic imaging and shadowgraphy provide detailed information regarding the ablation of the wires and the...
To increase memory bandwidth with minimum area overhead, the new concept of 3D-stacked memory structure consisting of a small sense amplifier shared with a few 3D memory cells has been presented. The 16 bit 3D-stacked TiO2 memory chip was fabricated and demonstrated. The estimated bandwidth per unit area of 3D-stacked memory in sub-65 nm CMOS technology indicates that the 3D-stacked memory has potential...
Electrical explosion of wires in a water medium is a promising method for generation of strong shock waves (SSW) and non-ideal plasma. Here we report on underwater electrical wire explosions (UEWE) that were investigated experimentally and using computer modeling. Micro- and nano-second time scale generators for UEWE of Cu wire and Cu wire cylindrical arrays were employed. A microsecond time scale...
We present the use of swept wavelength interferometry for distributed fiber-optic temperature measurements in a nuclear reactor. The sensors consisted of 2-m segments of commercially available, single mode optical fibers. The interrogation technique is based on measuring the spectral shift of the intrinsic Rayleigh backscatter signal along the optical fiber and converting the spectral shift to temperature.
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