Nuclear-spectroscopy based, first-generation, computerized tomography scanners

Author

Martz, H.E. ; Roberson, G.P. ; Schneberk, D.J. ; Azevedo, S.G.

Author_Institution

Lawrence Livermore Nat. Lab., CA, USA

Volume

38

Issue

2

fYear

1991

fDate

4/1/1991 12:00:00 AM

Firstpage

623

Lastpage

635

Abstract

A number of inexpensive, nuclear-spectroscopy-based, first-generation, computerized tomography (CT) scanners have been built to satisfy most Lawrence Livermore National Laboratory (LLNL) CT inspection requirements. The authors describe these CT scanners in detail and discuss their advantages and disadvantages when compared to the more common and more recent current-integration-based scanners. The major advantage of nuclear-spectroscopy-based scanners is that they can be used to determine all internal, spatially distributed, effective-atomic-number and density map within the object. It is also shown, how these scanners can be used to acquire meaningful chemical information for nondestructive characterization of materials and dimensional information for evaluating assembled components

Keywords

computerised tomography; inspection; nondestructive testing; radiography; spectroscopy computing; chemical information; computerized tomography scanners; current-integration-based scanners; density map; dimensional information; effective-atomic-number; first-generation; inspection requirements; nondestructive characterization; nuclear-spectroscopy-based; Assembly; Attenuation measurement; Chemicals; Computed tomography; Image reconstruction; Inspection; Laboratories; Nuclear power generation; Sensor arrays; Spatial resolution;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.289366

Filename

289366