Neutron source reconstruction using a generalized expectation-maximization algorithm on one-dimensional neutron images from the Z facility

Magnetized Liner Inertial Fusion experiments have been performed at the Z facility at Sandia National Laboratories. These experiments use deuterium fuel, which produces 2.45 MeV neutrons on reaching thermonuclear conditions. To study the spatial structure of neutron production, the one-dimensional i...

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Podrobná bibliografie
Vydáno v:	Review of scientific instruments Ročník 95; číslo 3
Hlavní autoři:	Ricketts, S A, Mangan, M A, Volegov, P, Fittinghoff, D N, Lewis, W E, Mannion, O M, Morel, J E, Adams, M L, Ampleford, D J
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States 01.03.2024
ISSN:	1089-7623, 1089-7623
On-line přístup:	Zjistit podrobnosti o přístupu
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Popis
Shrnutí:	Magnetized Liner Inertial Fusion experiments have been performed at the Z facility at Sandia National Laboratories. These experiments use deuterium fuel, which produces 2.45 MeV neutrons on reaching thermonuclear conditions. To study the spatial structure of neutron production, the one-dimensional imager of neutrons diagnostic was fielded to record axial resolved neutron images. In this diagnostic, neutrons passing through a rolled edge aperture form an image on a CR-39-based solid state nuclear track detector. Here, we present a modified generalized expectation-maximization algorithm to reconstruct an axial neutron emission profile of the stagnated fusion plasma. We validate the approach by comparing the reconstructed neutron emission profile to an x-ray emission profile provided by a time-integrated pinhole camera.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1089-7623 1089-7623
DOI:	10.1063/5.0176152