Radiative shocking and acceleration of polycrystalline slabs for investigation of ablative Rayleigh-Taylor instability triggered by ablator microstructure
- Nelson M.
- David L.
- Damian C.
- James A.
- Thomas
It is vital to identify and control all perturbation sources that could trigger ablative Rayleigh-Taylor instability One obvious perturbation 'seed' is surface roughness computed perturbation growth, validated by experiments - Specification for allowable roughness of NIF ignition capsule' is based on But what about infernal microstructure of shell materials? - Beryllium shells are composed of individual crystalline grains with - Polymer shells are composed of long molecular chains that might 'stack like an isotropic elastic/plastic properties logs' with a preferred orientation What happens when shock waves transit anisotropic material? What happens when such material is accelerated by radiation drive? We need a specification for allowable internal anisotropy.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 976441
- Report Number(s):
- LA-UR-02-7034; TRN: US201018%%1263
- Resource Relation:
- Conference: Submitted to: 44th Annual APS Division of Plasma Physics Meeting, Orlando, FL, 11-15 November, 2002
- Country of Publication:
- United States
- Language:
- English
Similar Records
Rayleigh{endash}Taylor instability evolution in ablatively driven cylindrical implosions
Observation of the stabilizing effect of a laminated ablator on the ablative Rayleigh-Taylor instability