Seeding the Electrothermal Instability through a Three-Dimensional, Nonlinear Perturbation
Journal Article
·
· Physical Review Letters
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Univ. of New Mexico, Albuquerque, NM (United States)
- Univ. of Nevada, Reno, NV (United States)
- General Atomics, San Diego, CA (United States)
Electrothermal instability plays an important role in applications of current-driven metal, creating striations (which seed the magneto–Rayleigh-Taylor instability) and filaments (which provide a more rapid path to plasma formation). However, the initial formation of both structures is not well understood. Here, simulations show for the first time how a commonly occurring isolated defect transforms into the larger striation and filament, through a feedback loop connecting current and electrical conductivity. Simulations have been experimentally validated using defect-driven self-emission patterns.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344; NA0003525
- OSTI ID:
- 2008175
- Alternate ID(s):
- OSTI ID: 2311433
OSTI ID: 2311641
- Report Number(s):
- LLNL--JRNL-831407; SAND--2023-05781J; SAND--2023-06015J; 1043407
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 130; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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