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Measurements of fuel and ablator ρR in Symmetry-Capsule implosions with the Magnetic Recoil neutron Spectrometer (MRS) on the National Ignition Facility.
Gatu Johnson, M; Frenje, J A; Li, C K; Séguin, F H; Petrasso, R D; Bionta, R M; Casey, D T; Caggiano, J A; Hatarik, R; Khater, H Y; Sayre, D B; Knauer, J P; Sangster, T C; Herrmann, H W; Kilkenny, J D.
  • Gatu Johnson M; Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Frenje JA; Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Li CK; Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Séguin FH; Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Petrasso RD; Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Bionta RM; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Casey DT; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Caggiano JA; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hatarik R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Khater HY; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Sayre DB; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Knauer JP; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
  • Sangster TC; Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA.
  • Herrmann HW; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Kilkenny JD; General Atomics, San Diego, California 92186, USA.
Rev Sci Instrum ; 85(11): 11E104, 2014 Nov.
Article en En | MEDLINE | ID: mdl-25430283
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/cm(2) and CH-ablator ρR's of 400-680 mg/cm(2) 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.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2014 Tipo del documento: Article
Texto completo
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2014 Tipo del documento: Article