Profile consistency
Profile consistency (or profile resilience) is the observation that profiles (of temperature, density, and pressure) often tend to adopt roughly the same shape (in tokamaks), regardless of the applied heating and fueling profiles. [1] [2] The resulting (stiff) profiles are known as canonical profiles. [3] This phenomenology is due to plasma self-organisation, [4] i.e., the feedback mechanism regulating the profiles (by turbulence) is often dominant over the various source terms. [5]
Recently, some indication of profile consistency has also been obtained for stellarators. [6]
References
- ↑ B. Coppi, Nonclassical Transport and the "Principle of Profile Consistency", Comments Plasma Phys. Cont. Fusion 5, 6 (1980) 261-270
- ↑ Yu.N. Dnestrovsky et al, Sov. J. Plasma Phys. 16 (1990) 120
- ↑ Yu.N. Dnestrovsky et al, Canonical profiles in tokamak plasmas with an arbitrary cross section, Plasma Physics Reports 28, 11 (2002) 887-899
- ↑ Yu.N. Dnestrovsky et al, Self-organization of plasma in tokamaks, Plasma Physics Reports 31, 7 (2005) 529-553
- ↑ F. Jenko et al, Critical gradient formula for toroidal electron temperature gradient modes, Phys. Plasmas 8 (2001) 4096
- ↑ Yu.N. Dnestrovsky et al, IAEA Fusion Energy Conference, Geneva (2008) TH/P8-24