High-resolution spectroscopy used to measure inertial confinement fusion neutron spectra on Omega (invited)
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623-1299 (United States)
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States)
- 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, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 83; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
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