Your browser doesn't support javascript.
loading
Neutron Time-of-Flight Measurements of Charged-Particle Energy Loss in Inertial Confinement Fusion Plasmas.
Sayre, D B; Cerjan, C J; Sepke, S M; Gericke, D O; Caggiano, J A; Divol, L; Eckart, M J; Graziani, F R; Grim, G P; Hansen, S B; Hartouni, E P; Hatarik, R; Hatchett, S P; Hayes, A K; Hopkins, L F Berzak; Johnson, M Gatu; Khan, S F; Knauer, J P; Le Pape, S; MacKinnon, A J; McNaney, J M; Meezan, N B; Rinderknecht, H G; Shaughnessy, D A; Stoeffl, W; Yeamans, C B; Zylstra, A B; Schneider, D H.
Afiliação
  • Sayre DB; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Cerjan CJ; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Sepke SM; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Gericke DO; Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom.
  • Caggiano JA; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Divol L; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Eckart MJ; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Graziani FR; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Grim GP; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hansen SB; Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
  • Hartouni EP; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hatarik R; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hatchett SP; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Hayes AK; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Hopkins LFB; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Johnson MG; Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
  • Khan SF; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Knauer JP; University of Rochester, Rochester, New York 14623, USA.
  • Le Pape S; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • MacKinnon AJ; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • McNaney JM; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Meezan NB; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Rinderknecht HG; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Shaughnessy DA; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Stoeffl W; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Yeamans CB; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Zylstra AB; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
  • Schneider DH; Lawrence Livermore National Laboratory, Livermore, California 94550, USA.
Phys Rev Lett ; 123(16): 165001, 2019 Oct 18.
Article em En | MEDLINE | ID: mdl-31702328
ABSTRACT
Neutron spectra from secondary ^{3}H(d,n)α reactions produced by an implosion of a deuterium-gas capsule at the National Ignition Facility have been measured with order-of-magnitude improvements in statistics and resolution over past experiments. These new data and their sensitivity to the energy loss of fast tritons emitted from thermal ^{2}H(d,p)^{3}H reactions enable the first statistically significant investigation of charged-particle stopping via the emitted neutron spectrum. Radiation-hydrodynamic simulations, constrained to match a number of observables from the implosion, were used to predict the neutron spectra while employing two different energy loss models. This analysis represents the first test of stopping models under inertial confinement fusion conditions, covering plasma temperatures of k_{B}T≈1-4 keV and particle densities of n≈(12-2)×10^{24} cm^{-3}. Under these conditions, we find significant deviations of our data from a theory employing classical collisions whereas the theory including quantum diffraction agrees with our data.
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Estados Unidos
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Phys Rev Lett Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Estados Unidos