Improved nondestructive determination of two-dimensional radial isotopic distributions in irradiated fuel pins

Journal Article · Sun Feb 01 04:00:00 EST 1976 · Nucl. Technol., v. 28, no. 2, pp. 282-290

OSTI ID:4000887

Phillips, J R

The method for the nondestructive determination of two-dimensional radial isotopic distributions of fission and activation products of irradiated fuel pins was improved. In this method the fuel pins are gamma-scanned diametrally at two or more angular orientations, and the diametral isotopic scans are unfolded into two-dimensional radial isotopic distributions. The computer code for processing the data was improved so that it calculates the individual diametral volume segments, the source self-attenuation factors, and the source intensity matrices. The two-dimensional source intensity matrices are presented as radial isotopic distributions, density plots, contour plots, and isometric projections. The new computer code improves the precision and reduces the analysis time as shown in the examination of more than 10 experimental fast- reactor fuel pins.

• Research Organization: Los Alamos Scientific Lab., NM
• NSA Number: NSA-33-032537
• OSTI ID: 4000887
• Journal Information: Nucl. Technol., v. 28, no. 2, pp. 282-290, Journal Name: Nucl. Technol., v. 28, no. 2, pp. 282-290; ISSN NUTYB
• Country of Publication: United States
• Language: English

Related Subjects

*FUEL PINS-- NONDESTRUCTIVE ANALYSIS
220300* --Nuclear Reactor Technology--Fuel Elements
DISTRIBUTION
FISSION PRODUCTS
GAMMA FUEL SCANNING
ISOTOPE RATIO
N42400 --Engineering-- Materials Testing
N79300* --Reactors--Reactor Fuels