Measurements of fuel and ablator ρR in Symmetry-Capsule implosions with the Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility

Author(s)
Bionta, R. M.; Casey, D. T.; Caggiano, J. A.; Hatarik, R.; Khater, H. Y.; ... Show more
Thumbnail
DownloadMeasurements of fuel and ablator.pdf (524.9Kb)
PUBLISHER_POLICY
Terms of use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Metadata
Show full item record
Abstract
The Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility (NIF) measures the neutron spectrum in the energy range of 4–20 MeV. This paper describes MRS measurements of DT-fuel and CH-ablator ρR in DT gas-filled symmetry-capsule implosions at the NIF. DT-fuel ρR's of 80–140 mg/cm² and CH-ablator ρR's of 400–680 mg/cm² are inferred from MRS data. The measurements were facilitated by an improved correction of neutron-induced background in the low-energy part of the MRS spectrum. This work demonstrates the accurate utilization of the complete MRS-measured neutron spectrum for diagnosing NIF DT implosions.
Date issued
2014-07
URI
http://hdl.handle.net/1721.1/111163
Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
Journal
Review of Scientific Instruments
Publisher
American Institute of Physics (AIP)
Citation
Gatu Johnson, M. et al. “Measurements of Fuel and Ablator ρR in Symmetry-Capsule Implosions with the Magnetic Recoil Neutron Spectrometer (MRS) on the National Ignition Facility.” Review of Scientific Instruments 85, 11 (November 2014): 11E104 © 2014 American Institute of Physics (AIP)
Version: Author's final manuscript
ISSN
0034-6748
1089-7623
Collections