2
IRUS Total
Downloads
  Altmetric

The effect of areal density asymmetries on scattered neutron spectra in ICF implosions

File Description SizeFormat 
5.0038752.pdfPublished version1.36 MBAdobe PDFView/Open
Title: The effect of areal density asymmetries on scattered neutron spectra in ICF implosions
Authors: Crilly, AJ
Appelbe, BD
Mannion, OM
Forrest, CJ
Chittenden, JP
Item Type: Journal Article
Abstract: Scattered neutron spectroscopy is a diagnostic technique commonly used to measure areal density in inertial confinement fusion experiments. Deleterious areal density asymmetries modify the shape of the scattered neutron spectrum. In this work, a novel analysis is developed, which can be used to fit the shape change. This will allow experimental scattered neutron spectroscopy to directly infer the amplitude and mode of the areal density asymmetries, with little sensitivity to confounding factors that affect other diagnostics for areal density. The model is tested on spectra produced by a neutron transport calculation with both isotropic and anisotropic primary fusion neutron sources. Multiple lines of sight are required to infer the areal density distribution over the whole sphere—we investigate the error propagation and optimal detector arrangement associated with the inference of mode 1 asymmetries.
Issue Date: 1-Feb-2021
Date of Acceptance: 30-Jan-2021
URI: http://hdl.handle.net/10044/1/94098
DOI: 10.1063/5.0038752
ISSN: 1070-664X
Publisher: American Institute of Physics
Start Page: 1
End Page: 9
Journal / Book Title: Physics of Plasmas
Volume: 28
Issue: 2
Copyright Statement: © 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). https://doi.org/10.1063/5.0038752
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Lawrence Livermore National Laboratory
AWE Plc
Funder's Grant Number: EP/P010288/1
B618573
30469588
Keywords: Science & Technology
Physical Sciences
Physics, Fluids & Plasmas
Physics
Science & Technology
Physical Sciences
Physics, Fluids & Plasmas
Physics
physics.plasm-ph
physics.plasm-ph
Fluids & Plasmas
0201 Astronomical and Space Sciences
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0203 Classical Physics
Publication Status: Published
Article Number: ARTN 022710
Online Publication Date: 2021-02-24
Appears in Collections:Physics
Plasma Physics
Faculty of Natural Sciences



This item is licensed under a Creative Commons License Creative Commons