LLE-LLNL progress report on studies in nonlocal heat transport in spherical plasmas using the Fokker-Planck code SPARK

Technical Report · Wed Apr 22 00:00:00 EDT 1992

OSTI ID:10144524

Epperlein, E M ^[1]; Amendt, P; Powers, L; Suter, L J ^[2]

---

1. Rochester Univ., NY (United States). Lab. for Laser Energetics
2. Lawrence Livermore National Lab., CA (United States)

Preliminary 1-D studies of nonlocal heat transport in spherical plasmas based on the Fokker-Planck code SPARK indicate significant levels of electron preheat and radial heat flux across a spherical heat sink surface kept at fixed temperature. However, the diffusive approximation to the Fokker-Planck equation is shown to be particularly sensitive to the nature of the inner surface boundary condition chosen. A suggested remedy is the inclusion of a target capsule in future simulations studies with SPARK.

• Research Organization: Lawrence Livermore National Lab., CA (United States); Rochester Univ., NY (United States). Lab. for Laser Energetics
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC03-85DP40200; W-7405-ENG-48
• OSTI ID: 10144524
• Report Number(s): UCRL-ID-110314; ON: DE92014093
• Resource Relation: Other Information: PBD: 22 Apr 1992
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
LASER-PRODUCED PLASMA
HEAT TRANSFER
FOKKER-PLANCK EQUATION
PROGRESS REPORT
S CODES
BOUNDARY CONDITIONS
DISTRIBUTION FUNCTIONS
INERTIAL CONFINEMENT
SPHERICAL CONFIGURATION
700330
700411
PLASMA KINETICS, TRANSPORT, AND IMPURITIES
INERTIAL CONFINEMENT DEVICES