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Multiple monoenergetic gamma radiography (MMGR) with a compact superconducting cyclotron.
- Source :
-
Journal of Applied Physics . 9/21/2020, Vol. 128 Issue 11, p1-7. 7p. - Publication Year :
- 2020
-
Abstract
- Smuggling of special nuclear materials and nuclear devices through borders and ports of entry constitutes a major risk to global security. Technologies are needed to reliably screen the flow of commerce for the presence of high- Z materials such as uranium and plutonium. Here, we present an experimental proof-of-concept of a technique that uses inelastic (p , p ′) nuclear reactions to generate monoenergetic photons, which provide means to measure the areal density and the effective- Z (Z eff ) of an object with an accuracy surpassing that achieved by current methods. We use an ION-12 SC superconducting 12 MeV proton cyclotron to produce 4.4, 6.1, 6.9, and 7.1 MeV photons from a variety of nuclear reactions. Using these photons in a transmission mode, we show that we are able to accurately reconstruct the areal densities and Z eff of a test object. This methodology could enable mobile applications to screen commercial cargoes with high material specificity, providing a means of distinguishing common cargo materials from high-Z materials that include uranium and plutonium. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 128
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 145991268
- Full Text :
- https://doi.org/10.1063/5.0002201