Few-Body Systems

, Volume 54, Issue 7–10, pp 1599–1602

T–T Neutron Spectrum from Inertial Confinement Implosions

  • A. D. Bacher
  • D. T. Casey
  • J. A. Frenje
  • M. J. Gatu Johnson
  • M. Manuel
  • N. Sinenian
  • A. B. Zylstra
  • F. H. Séguin
  • C. K. Li
  • R. D. Petrasso
  • V. Yu Glebov
  • P. B. Radha
  • D. D. Meyerhofer
  • T. C. Sangster
  • D. P. McNabb
  • P. A. Amendt
  • R. N. Boyd
  • J. A. Caggiano
  • S. P. Hatchett
  • J. E. Pino
  • S. Quaglioni
  • J. R. Rygg
  • I. J. Thompson
  • H. W. Herrmann
  • Y. H. Kim
Article

Abstract

A new technique that uses inertial confinement implosions for measuring low-energy nuclear reactions important to nuclear astrophysics is described. Simultaneous measurements of n–D and n–T elastic scattering at 14.1 MeV using deuterium–tritium gas-filled capsules provide a proof of principle for this technique. Measurements have been made of D(d,p)T (dd) and T(t,2n)4He (tt) reaction yields relative to the D(t,n)4He (dt) reaction yield for deuterium–tritium mixtures with fT/fD between 0.62 and 0.75 and for a wide range of ion temperatures to test our understanding of the implosion processes. Measurements of the shape of the neutron spectrum from the T(t,2n)4He reaction have been made for each of these target configurations.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Boehly T.R. et al.: Initial performance results of the OMEGA laser system. Opt. Commun. 133, 495 (1997)ADSCrossRefGoogle Scholar
  2. 2.
    Moses E.I. et al.: The National Ignition Facility: Ushering in a new age for high energy density science. Phys. Plasmas 16, 041006 (2009)ADSCrossRefGoogle Scholar
  3. 3.
    Séguin F.H. et al.: Spectrometry of charged particles from inertial-confinement-fusion plasmas. Rev. Sci. Instrum. 74, 975 (2003)ADSCrossRefGoogle Scholar
  4. 4.
    Frenje J.A. et al.: First measurements of the absolute neutron spectrum using the magnetic recoil spectrometer at OMEGA. Rev. Sci. Instrum. 79, 10E502 (2008)CrossRefGoogle Scholar
  5. 5.
    Bradley P.A. et al.: Neutron reactions in the hohlraum at the LLNL National Ignition Facility. Phys. Rev. C 86, 014617 (2012)ADSCrossRefGoogle Scholar
  6. 6.
    Casey D.T. et al.: The coincidence counting technique for orders of magnitude background reduction in data obtained with the magnetic recoil spectrometer at OMEGA and the NIF. Rev. Sci. Instrum. 82, 073502 (2011)ADSCrossRefGoogle Scholar
  7. 7.
    Frenje J.A. et al.: Measurements of the differential cross sections for the elastic n–3H and n–2H scattering at 14.1 MeV by using an inertial confinement fusion facility. Phys. Rev. Lett. 107, 122502 (2011)ADSCrossRefGoogle Scholar
  8. 8.
    Epelbaum, E., et al.: Three-nucleon forces from chiral effective field theory. Phys. Rev. C 66, 064001 (2002, private communication)Google Scholar
  9. 9.
    Casey D.T. et al.: Evidence for stratification of deuterium–tritium fuel in inertial confinement fusion implosions. Phys. Rev. Lett. 108, 075002 (2012)ADSCrossRefGoogle Scholar
  10. 10.
    Casey D.T. et al.: Measurements of the T(t,2n)4He neutron spectrum at low reactant energies from inertial confinement implosions. Phys. Rev. Lett. 109, 025003 (2012)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Wien 2012

Authors and Affiliations

  • A. D. Bacher
    • 1
  • D. T. Casey
    • 2
  • J. A. Frenje
    • 2
  • M. J. Gatu Johnson
    • 2
  • M. Manuel
    • 2
  • N. Sinenian
    • 2
  • A. B. Zylstra
    • 2
  • F. H. Séguin
    • 2
  • C. K. Li
    • 2
  • R. D. Petrasso
    • 2
  • V. Yu Glebov
    • 3
  • P. B. Radha
    • 3
  • D. D. Meyerhofer
    • 3
  • T. C. Sangster
    • 3
  • D. P. McNabb
    • 4
  • P. A. Amendt
    • 4
  • R. N. Boyd
    • 4
  • J. A. Caggiano
    • 4
  • S. P. Hatchett
    • 4
  • J. E. Pino
    • 4
  • S. Quaglioni
    • 4
  • J. R. Rygg
    • 4
  • I. J. Thompson
    • 4
  • H. W. Herrmann
    • 5
  • Y. H. Kim
    • 5
  1. 1.Department of PhysicsIndiana UniversityBloomingtonUSA
  2. 2.Plasma Science and Fusion Center, MITCambridgeUSA
  3. 3.Laboratory for Laser EnergeticsUniversity of RochesterRochesterUSA
  4. 4.Lawrence Livermore National LaboratoryLivermoreUSA
  5. 5.Los Alamos National LaboratoryLos AlamosUSA

Personalised recommendations