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Title: Inertial confinement fusion neutron images

Abstract

At the OMEGA laser facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)], 14-MeV neutron images are acquired with a 20-{mu}m resolution and a large signal-to-noise ratio (SNR) using penumbral and ring apertures. The two aperture types produce coded images of the source that are unfolded using a similar autocorrelation method. The techniques provide comparable images for various deuterium-tritium filled target implosions, with glass and plastic (CH) shells. SNR analysis reveals that the annular (ring) technique will achieve a good image quality at the 10-{mu}m resolution level with the planned upgrade of our novel detector. The detector is an array of 85-{mu}m-diam capillary tubes filled with a liquid scintillator. Its resolution is limited to 650 {mu}m by the track length of the elastically scattered recoil protons. Replacing the hydrogen in the scintillator with deuterium improves detector spatial resolution to 325 {mu}m, and makes high source resolution achievable. The readout design provides an efficient light collection of the scintillation photons by relaying the image through a fiber optic taper. Improved efficiency produces images with better SNR. Also, the increased detector sensitivity allows single event recording of 2.45-MeV neutron interactions. For the first time ever, we show neutron images ofmore » deuterium filled, warm, and cryogenic target implosions.« less

Authors:
; ; ; ; ; ; ;  [1]
  1. CEA-DAM Ile de France, BP 12, 91680 Bruyeres Le Chatel (France)
Publication Date:
OSTI Identifier:
20783165
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 13; Journal Issue: 5; Other Information: DOI: 10.1063/1.2174828; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APERTURES; CAPILLARIES; DEUTERIUM; HYDROGEN; ICF DEVICES; IMAGES; INERTIAL CONFINEMENT; LASER IMPLOSIONS; LASERS; LIQUID SCINTILLATION DETECTORS; MEV RANGE; NEUTRON DETECTION; NEUTRONS; PHOTONS; PLASMA DIAGNOSTICS; PLASTICS; PROTONS; SIGNAL-TO-NOISE RATIO; SPATIAL RESOLUTION; TRITIUM

Citation Formats

Disdier, L, Rouyer, A, Lantuejoul, I, Landoas, O, Bourgade, J L, Sangster, T C, Glebov, V Yu, Lerche, R A, Laboratory for Laser Energetics, Rochester, New York 14623-1299, and Lawrence Livermore National Laboratory, Livermore, California 94551. Inertial confinement fusion neutron images. United States: N. p., 2006. Web. doi:10.1063/1.2174828.
Disdier, L, Rouyer, A, Lantuejoul, I, Landoas, O, Bourgade, J L, Sangster, T C, Glebov, V Yu, Lerche, R A, Laboratory for Laser Energetics, Rochester, New York 14623-1299, & Lawrence Livermore National Laboratory, Livermore, California 94551. Inertial confinement fusion neutron images. United States. https://doi.org/10.1063/1.2174828
Disdier, L, Rouyer, A, Lantuejoul, I, Landoas, O, Bourgade, J L, Sangster, T C, Glebov, V Yu, Lerche, R A, Laboratory for Laser Energetics, Rochester, New York 14623-1299, and Lawrence Livermore National Laboratory, Livermore, California 94551. 2006. "Inertial confinement fusion neutron images". United States. https://doi.org/10.1063/1.2174828.
@article{osti_20783165,
title = {Inertial confinement fusion neutron images},
author = {Disdier, L and Rouyer, A and Lantuejoul, I and Landoas, O and Bourgade, J L and Sangster, T C and Glebov, V Yu and Lerche, R A and Laboratory for Laser Energetics, Rochester, New York 14623-1299 and Lawrence Livermore National Laboratory, Livermore, California 94551},
abstractNote = {At the OMEGA laser facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)], 14-MeV neutron images are acquired with a 20-{mu}m resolution and a large signal-to-noise ratio (SNR) using penumbral and ring apertures. The two aperture types produce coded images of the source that are unfolded using a similar autocorrelation method. The techniques provide comparable images for various deuterium-tritium filled target implosions, with glass and plastic (CH) shells. SNR analysis reveals that the annular (ring) technique will achieve a good image quality at the 10-{mu}m resolution level with the planned upgrade of our novel detector. The detector is an array of 85-{mu}m-diam capillary tubes filled with a liquid scintillator. Its resolution is limited to 650 {mu}m by the track length of the elastically scattered recoil protons. Replacing the hydrogen in the scintillator with deuterium improves detector spatial resolution to 325 {mu}m, and makes high source resolution achievable. The readout design provides an efficient light collection of the scintillation photons by relaying the image through a fiber optic taper. Improved efficiency produces images with better SNR. Also, the increased detector sensitivity allows single event recording of 2.45-MeV neutron interactions. For the first time ever, we show neutron images of deuterium filled, warm, and cryogenic target implosions.},
doi = {10.1063/1.2174828},
url = {https://www.osti.gov/biblio/20783165}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 13,
place = {United States},
year = {2006},
month = {5}
}