Charged-particle stopping powers in inertial confinement fusion plasmas

摘要: The effects of large-angle scattering, important for plasmas which the Coulomb logarithm is order 1, have been properly treated in calculating range (R) and \ensuremath{\rho}R (the fuel-areal density) inertial confinement fusion plasmas. This new calculation, also includes plasma ion stopping, collective oscillations, quantum effects, leads to an accurate estimate, not just upper limit \ensuremath{\rho}R. For example, 3.5 MeV \ensuremath{\alpha}'s from D-T reactions are found directly deposit \ensuremath{\simeq}47% their energy into 20 keV deuterons tritons. Consequently \ensuremath{\alpha} reduced by about 60% case pure electron stopping.