| Title: |
Neutron source reconstruction using a generalized expectation–maximization algorithm on one-dimensional neutron images from the Z facility |
| Authors: |
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. |
| Contributors: |
National Nuclear Security Administration |
| Source: |
Review of Scientific Instruments ; volume 95, issue 3 ; ISSN 0034-6748 1089-7623 |
| Publisher Information: |
AIP Publishing |
| Publication Year: |
2024 |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1063/5.0176152 |
| DOI: |
10.1063/5.0176152/19707787/033501_1_5.0176152.pdf |
| Availability: |
https://doi.org/10.1063/5.0176152; https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0176152/19707787/033501_1_5.0176152.pdf |
| Accession Number: |
edsbas.A8E21347 |
| Database: |
BASE |