Gamma radiography

From CAMEO
Revision as of 11:25, 18 August 2013 by JLBoutaine (talk | contribs) (Created page with "== Description == A radiographic technique for the nondestructive examination of cultural heritage artefacts (mainly metal or stone statues). The radiation source is a sealed...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Description

A radiographic technique for the nondestructive examination of cultural heritage artefacts (mainly metal or stone statues). The radiation source is a sealed radioactive source (iridium 192 or cobalt 60) set in a gamma radiography projector. The gamma rays will penetrate different composition/density materials to varying degrees. The resulting variations of transmission of these radiations are recorded by a detector, generaly a radiographic film, thus characterizing the internal compositional structure of an object. object The resulting gamma radiograph shows the differential absorption pattern, useful for examining an object internal structure : homogeneity of the constitutive material, voids, cracks, inserts, mechanical assembly processes, previous restoration or modification...

Synonyms and related terms

Radiographie gamma, gammagraphie (Fr.);