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

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4742926· OSTI ID:22093886

Forrest, C. J.; Radha, P. B.; Glebov, V. Yu.; Goncharov, V. N.; Knauer, J. P.; Pruyne, A.; Romanofsky, M.; Sangster, T. C.; Shoup, III, M. J.; Stoeckl, C. ^[1]; Casey, D. T.; Gatu-Johnson, M. ^[2]; Gardner, S. ^[3]

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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)

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.

• OSTI ID: 22093886
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

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