Fast electron confinement during lower hybrid experiments in ASDEX
A detailed analysis is presented of experimental data on the energy content in the fast electron population created by lower hybrid waves in the ASDEX tokamak. It is shown that in most circumstances direct losses due to diffusion of these electrons can be neglected. The value of the diffusion coefficient of fast electrons is inferred from the time behaviour of hard X-ray emission during power modulation experiments. It is shown that fast electrons are better confined than the thermal ones. This experimental result is compared with prediction of theories based on transport driven by electrostatic or magnetic turbulence.
Bibliographic Reference: Report: RT/NUCL/92/35 EN (1993) 24 pp.
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 199311248 / Last updated on: 1994-11-29
Original language: en
Available languages: en