Stopping of directed energetic electrons in high-temperature hydrogenic plasmas

Journal Article · Wed Dec 01 00:00:00 EST 2004 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

DOI:https://doi.org/10.1103/PhysRevE.70.067401· OSTI ID:20636918

Li, C K; Petrasso, R D ^[1]

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1. Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

From fundamental principles, the interaction of directed energetic electrons with a high-temperature hydrogenic plasma is analytically modeled. The randomizing effect of scattering off both plasma ions and electrons is treated from a unified point of view. For electron energies less than 3 MeV, electron scattering is equally important. The net effect of multiple scattering is to reduce the penetration from 0.54 to 0.41 g/cm{sup 2} for 1 MeV electrons in a 300 g/cm{sup 3} plasma at 5 keV. These considerations are relevant to 'fast ignition' and to fuel preheat for inertial confinement fusion.

• OSTI ID: 20636918
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, Vol. 70, Issue 6; Other Information: DOI: 10.1103/PhysRevE.70.067401; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
INERTIAL CONFINEMENT
IONS
KEV RANGE 01-10
MEV RANGE 01-10
MULTIPLE SCATTERING
PLASMA
PLASMA HEATING
TAIL ELECTRONS
THERMONUCLEAR IGNITION