title: Core electrostatic fluctuations and particle transport in a reversed-field pinch.
abstract: Potential and electron-density fluctuation profiles, phi(r) and ñ(e)(r)/n(e), are measured for the first time in the core of a reversed-field pinch using a heavy ion beam probe. It is found that the fluctuations are broadband and correlated with the core resonant m/n=1/6 tearing mode. The electrostatic-fluctuation-induced particle transport in the core of standard RFP plasmas, estimated from measured <ñ(e)phi>, is small compared to the total particle flux. Measurements of fluctuations and estimates of fluctuation induced particle transport in improved confinement RFP discharges are also presented.
authors.affiliation: ECSE Department, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
authors.forename: J
authors.initials: J
authors.lastname: Lei
authors.forename: P M
authors.initials: PM
authors.lastname: Schoch
authors.forename: D R
authors.initials: DR
authors.lastname: Demers
authors.forename: U
authors.initials: U
authors.lastname: Shah
authors.forename: K A
authors.initials: KA
authors.lastname: Connor
authors.forename: J K
authors.initials: JK
authors.lastname: Anderson
authors.forename: T P
authors.initials: TP
authors.lastname: Crowley