Imperial College London
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DrBrianAppelbe

Faculty of Natural Sciences, Department of Physics

Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 7651b.appelbe07 Website

 
 
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Location

 

740Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Crilly:2020:10.1063/1.5128830,
author = {Crilly, AJ and Appelbe, BD and Mannion, OM and Forrest, CJ and Gopalaswamy, V and Walsh, CA and Chittenden, JP},
doi = {10.1063/1.5128830},
journal = {Physics of Plasmas},
pages = {012701--1--012701--11},
title = {Neutron backscatter edge: A measure of the hydrodynamic properties of the dense DT fuel at stagnation in ICF experiments},
url = {http://dx.doi.org/10.1063/1.5128830},
volume = {27},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The kinematic lower bound for the single scattering of neutrons produced in deuterium-tritium (DT) fusion reactions produces a backscatter edge in the measured neutron spectrum. The energy spectrum of backscattered neutrons is dependent on the scattering ion velocity distribution. As the neutrons preferentially scatter in the densest regions of the capsule, the neutron backscatter edge presents a unique measurement of the hydrodynamic conditions in the dense DT fuel. It is shown that the spectral shape of the edge is determined by the scattering rate weighted fluid velocity and temperature of the dense DT fuel layer during neutron production. In order to fit the neutron spectrum, a model for the various backgrounds around the backscatter edge is developed and tested on synthetic data produced from hydrodynamic simulations of OMEGA implosions. It is determined that the analysis could be utilized on current inertial confinement fusion experiments in order to measure the dense fuel properties.
AU  - Crilly,AJ
AU  - Appelbe,BD
AU  - Mannion,OM
AU  - Forrest,CJ
AU  - Gopalaswamy,V
AU  - Walsh,CA
AU  - Chittenden,JP
DO  - 10.1063/1.5128830
EP  - 1
PY  - 2020///
SN  - 1070-664X
SP  - 012701
TI  - Neutron backscatter edge: A measure of the hydrodynamic properties of the dense DT fuel at stagnation in ICF experiments
T2  - Physics of Plasmas
UR  - http://dx.doi.org/10.1063/1.5128830
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000505505200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://aip.scitation.org/doi/10.1063/1.5128830
UR  - http://hdl.handle.net/10044/1/76123
VL  - 27
ER  -
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