Abstract
The isotope effect on intrinsic rotation was studied at the Joint European Torus (JET) tokamak. With the unique capability of JET to operate with tritium (T), for the first time, experiments in hydrogen (H), deuterium (D) and T in Ohmic plasmas were compared. Two rotation reversals per isotope type are observed in plasma density scans spanning the linear and the saturated Ohmic confinement regimes. A clear isotope mass dependence is observed at the higher densities. The magnitude of the core rotation was found to depend on isotope mass, with stronger co-current rotation observed in H. Change on intrinsic rotation characteristics coexist with a stronger thermal energy confinement in T.
| Original language | English |
|---|---|
| Article number | 044002 |
| Journal | Nuclear Fusion |
| Volume | 63 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2023 |
Funding
This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No.101052200—EUROfusion). Views and opinions expressed are however those of the authors only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them. In addition, this work has received financial support from ‘Fundação para a Ciência e Tecnologia’ through contracts UID/FIS/50010/2013, IF/00483/2014/ CP1214/CT0008 and grant PD/BD/105877/2014.
Keywords
- Ohmic confinement
- intrinsic rotation
- isotope mass
- tritium plasmas
