Collisional alpha transport in a weakly rippled magnetic field
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'To properly treat the collisional transport of alpha particles due to a weakly rippled tokamak magnetic field the tangential magnetic drift due to its gradient (the ∇B drift) and pitch angle scatter must be retained. Their combination gives rise to a narrow boundary layer in which collisions are able to match the finite trapped response to the ripple to the vanishing passing response of the alphas. Away from this boundary layer collisions are ineffective. There the much stronger ∇B drift of the alphas easily balances the small radial drift of the trapped alphas caused by the ripple. As this balance does not vanish as the trapped-passing boundary is approached, a narrow collisional boundary layer is necessary. The solution of this boundary layer problem allows the alpha transport fluxes to be evaluated in a self-consistent manner to obtai' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["alpha losses","collisional transport","radial drift","trapped alphas","weakly rippled"]} <|eot_id|>
 Here is the Description of a dataset. Description:'To properly treat the collisional transport of alpha particles due to a weakly rippled tokamak magnetic field the tangential magnetic drift due to its gradient (the ∇B drift) and pitch angle scatter must be retained. Their combination gives rise to a narrow boundary layer in which collisions are able to match the finite trapped response to the ripple to the vanishing passing response of the alphas. Away from this boundary layer collisions are ineffective. There the much stronger ∇B drift of the alphas easily balances the small radial drift of the trapped alphas caused by the ripple. As this balance does not vanish as the trapped-passing boundary is approached, a narrow collisional boundary layer is necessary. The solution of this boundary layer problem allows the alpha transport fluxes to be evaluated in a self-consistent manner to obtai' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
To properly treat the collisional transport of alpha particles due to a weakly rippled tokamak magnetic field the tangential magnetic drift due to its gradient (the ∇B drift) and pitch angle scatter must be retained. Their combination gives rise to a narrow boundary layer in which collisions are able to match the finite trapped response to the ripple to the vanishing passing response of the alphas. Away from this boundary layer collisions are ineffective. There the much stronger ∇B drift of the alphas easily balances the small radial drift of the trapped alphas caused by the ripple. As this balance does not vanish as the trapped-passing boundary is approached, a narrow collisional boundary layer is necessary. The solution of this boundary layer problem allows the alpha transport fluxes to be evaluated in a self-consistent manner to obtai
alpha losses; collisional transport; radial drift; trapped alphas; weakly rippled