7 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Nondestructive Analysis"  
Results: 1 - 7
open access

Spatially resolved x-ray laser spectra and demonstration of gain in nickel-like systems

Description: A recent series of experiments have provided spatially resolved near field images of several candidate x-ray lasing transition in neon-like, nickel-like, and hydrogen-like ions from laser-produced plasmas. From these time-gated, spatially, and spectrally resolved measurements the source size for the J = 0 - 1 and the J = 2 - 1 transitions in Ne-like selenium have been determined. Source regions as small as 50 ..mu..m have been observed on transitions with gain-length products >9. In addition, w… more
Date: September 25, 1987
Creator: Whelan, D. A.; Keane, C. J.; MacGowan, B. J.; Matthews, D. L.; Trebes, J. E. & Eckart, M. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nondestructive assay instrumentation for a Savannah River Plant upgrade project

Description: We have designed and are developing three different computer-based spectrometer systems. Two will measure the concentration of Pu solutions by gamma-ray and by stimulated x-ray fluorescence emissions of solid samples in closed containers. All systems are coupled to remote terminals and bar code readers, and also to mini-computer based multichannel analyzers, which in turn are linked to another computer to provide a state-of-the-art nondestructive assay capability. Installation at the Savannah R… more
Date: October 25, 1984
Creator: Camp, D.; Eckels, D.; Gunnink, R.; Prindle, A. & Ruhter, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Gamma-ray isotopic ratio measurements for the plutonium inventory verification program

Description: The Plutonium Inventory Verification Program at Mound Laboratory provides a nondestructive means of assaying bulk plutonium-bearing material. The assay is performed by combining the calorimetrically determined heat output of the sample and the relative abundances of the heat-producing isotopes. This report describes the method used for the nondestructive determination of plutonium-238, -240, -241 and americium-241 relative to plutonium-239 using gamma-ray spectroscopy for 93 percent plutonium-2… more
Date: August 25, 1976
Creator: Lemming, J. F.; Haas, F. X. & Jarvis, J. Y.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Acoustic resonance spectroscopy (ARS): ARS300 operations manual, software version 2.01

Description: Acoustic Resonance Spectroscopy (ARS) is a nondestructive evaluation technology developed at the Los Alamos National Laboratory. The ARS technique is a fast, safe, and nonintrusive technique that is particularly useful when a large number of objects need to be tested. Any physical object, whether solid, hollow, or fluid filled, has many modes of vibration. These modes of vibration, commonly referred to as the natural resonant modes or resonant frequencies, are determined by the object`s shape, … more
Date: July 25, 1996
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Portable X-Ray, K-Edge Heavy Metal Detector

Description: The X-Ray, K-Edge Heavy Metal Detection System was designed and built by Ames Laboratory and the Center for Nondestructive Evaluation at Iowa State University. The system uses a C-frame inspection head with an X-ray tube mounted on one side of the frame and an imaging unit and a high purity germanium detector on the other side. the inspection head is portable and can be easily positioned around ventilation ducts and pipes up to 36 inches in diameter. Wide angle and narrow beam X-ray shots are u… more
Date: October 25, 1999
Creator: Fricke, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Three-dimensional position-sensitive germanium detectors]. Annual report for EMSP Project Number 65015

Description: This study focuses on the radioactive materials characterization needs of DOE's decontamination and decommissioning effort. Gamma-ray imaging and spectroscopy together form a potentially powerful tool for the passive, non-destructive and non-intrusive identification and spatial mapping of contaminated structures. Germanium position-sensitive gamma-ray detectors offer the advantage of excellent energy resolution required for clear isotopic identification combined with potentially high spatial re… more
Date: February 25, 2000
Creator: Amman, Mark & Luke, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen