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Title: High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited)

Abstract

The areal density ({rho}R) of cryogenic DT implosions on Omega is inferred by measuring the spectrum of neutrons that elastically scatter off the dense deuterium (D) and tritium (T) fuel. Neutron time-of-flight (nTOF) techniques are used to measure the energy spectrum with high resolution. High signal-to-background data has been recorded on cryogenic DT implosions using a well-collimated 13.4-m line of sight and an nTOF detector with an advanced liquid scintillator compound. An innovative method to analyze the elastically scattered neutron spectra was developed using well-known cross sections of the DT nuclear reactions. The estimated areal densities are consistent with alternative {rho}R measurements and 1-D simulations.

Authors:
; ; ; ; ; ; ; ; ;  [1]; ;  [2];  [3]
  1. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (United States)
  2. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States)
  3. Constellation Energy Nuclear Group, Ontario, New York 14519 (United States)
Publication Date:
OSTI Identifier:
22093886
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 83; Journal Issue: 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CROSS SECTIONS; DEUTERIUM; ENERGY SPECTRA; INERTIAL CONFINEMENT; LIQUID SCINTILLATION DETECTORS; NEUTRON DETECTION; NEUTRON SPECTRA; NEUTRON SPECTROMETERS; NEUTRONS; NUCLEAR REACTIONS; PLASMA DENSITY; PLASMA DIAGNOSTICS; SIMULATION; SPECTROSCOPY; THERMONUCLEAR REACTORS; TIME-OF-FLIGHT METHOD; TIME-OF-FLIGHT SPECTROMETERS; TRITIUM

Citation Formats

Forrest, C. J., Radha, P. B., Glebov, V. Yu., Goncharov, V. N., Knauer, J. P., Pruyne, A., Romanofsky, M., Sangster, T. C., Shoup, M. J. III, Stoeckl, C., Casey, D. T., Gatu-Johnson, M., and Gardner, S. High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited). United States: N. p., 2012. Web. doi:10.1063/1.4742926.
Forrest, C. J., Radha, P. B., Glebov, V. Yu., Goncharov, V. N., Knauer, J. P., Pruyne, A., Romanofsky, M., Sangster, T. C., Shoup, M. J. III, Stoeckl, C., Casey, D. T., Gatu-Johnson, M., & Gardner, S. High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited). United States. doi:10.1063/1.4742926.
Forrest, C. J., Radha, P. B., Glebov, V. Yu., Goncharov, V. N., Knauer, J. P., Pruyne, A., Romanofsky, M., Sangster, T. C., Shoup, M. J. III, Stoeckl, C., Casey, D. T., Gatu-Johnson, M., and Gardner, S. Mon . "High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited)". United States. doi:10.1063/1.4742926.
@article{osti_22093886,
title = {High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited)},
author = {Forrest, C. J. and Radha, P. B. and Glebov, V. Yu. and Goncharov, V. N. and Knauer, J. P. and Pruyne, A. and Romanofsky, M. and Sangster, T. C. and Shoup, M. J. III and Stoeckl, C. and Casey, D. T. and Gatu-Johnson, M. and Gardner, S.},
abstractNote = {The areal density ({rho}R) of cryogenic DT implosions on Omega is inferred by measuring the spectrum of neutrons that elastically scatter off the dense deuterium (D) and tritium (T) fuel. Neutron time-of-flight (nTOF) techniques are used to measure the energy spectrum with high resolution. High signal-to-background data has been recorded on cryogenic DT implosions using a well-collimated 13.4-m line of sight and an nTOF detector with an advanced liquid scintillator compound. An innovative method to analyze the elastically scattered neutron spectra was developed using well-known cross sections of the DT nuclear reactions. The estimated areal densities are consistent with alternative {rho}R measurements and 1-D simulations.},
doi = {10.1063/1.4742926},
journal = {Review of Scientific Instruments},
number = 10,
volume = 83,
place = {United States},
year = {Mon Oct 15 00:00:00 EDT 2012},
month = {Mon Oct 15 00:00:00 EDT 2012}
}