One-sided imaging of large, dense objects using 511-keV photons from induced-pair production

Autor:	Luis M. N. Tavora, M. Rawool-Sullivan, R.E. Morgado, Edward James Morton, R.J. Estep, W.B. Gilboy
Rok vydání:	1998
Předmět:	Nuclear physics Physics Nuclear and High Energy Physics Electron pair Annihilation Photon Pair production Nuclear Energy and Engineering Monte Carlo method Gamma ray Electron Electrical and Electronic Engineering Particle detector
Zdroj:	IEEE Transactions on Nuclear Science. 45:970-975
ISSN:	1558-1578 0018-9499
DOI:	10.1109/23.682689
Popis:	This work investigates the use of annihilation photons from gamma-ray-induced electron-positron pair production to inspect objects when only one side is accessible. The Z/sup 2/-dependence of the pair-production cross section and the high penetration of 511-keV photons allow this method to differentiate high-Z materials in low-Z matrices. The experimental results for the dependence of the back-streaming photon yield on Z shows a factor of 20 increase for elements over the range 4
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3afa35b565e9d144ace1c07f120c3a34 https://doi.org/10.1109/23.682689 Zobrazit plný text záznamu