It has recently been shown that a Yaglom law for electrostatic turbulence, that is, a relation for the third-order mixed moment involving the particle number density as a passive scalar and the E×B drift velocity, can be deduced from a simple model of electrostatic fluctuations, which describes bursty turbulence in plasmas. In this letter, the existence of the Yaglom law for electrostatic turbulence in laboratory magnetized plasmas is reported for the first time. Using measurements of intermittent transport at the edge of the RFX-mod reversed field pinch plasma device, we found that the above scaling relation is nicely verified at intermediate scales of few centimeters. In this range of scales, that unambiguously represents the inertial range of electrostatic turbulence, we also analyze the intermittency properties of electrostatic turbulence by measuring anomalous scaling exponents of density and velocity structure functions. © EPLA, 2009.

Lepreti, F., Carbone, V., Spolaore, M., Antoni, V., Cavazzana, R., Martines, E., et al. (2009). Yaglom law for electrostatic turbulence in laboratory magnetized plasmas. EUROPHYSICS LETTERS, 86(2) [10.1209/0295-5075/86/25001].

Yaglom law for electrostatic turbulence in laboratory magnetized plasmas

Martines E;
2009

Abstract

It has recently been shown that a Yaglom law for electrostatic turbulence, that is, a relation for the third-order mixed moment involving the particle number density as a passive scalar and the E×B drift velocity, can be deduced from a simple model of electrostatic fluctuations, which describes bursty turbulence in plasmas. In this letter, the existence of the Yaglom law for electrostatic turbulence in laboratory magnetized plasmas is reported for the first time. Using measurements of intermittent transport at the edge of the RFX-mod reversed field pinch plasma device, we found that the above scaling relation is nicely verified at intermediate scales of few centimeters. In this range of scales, that unambiguously represents the inertial range of electrostatic turbulence, we also analyze the intermittency properties of electrostatic turbulence by measuring anomalous scaling exponents of density and velocity structure functions. © EPLA, 2009.
Articolo in rivista - Articolo scientifico
plasma turbulence; Yaglom law;
English
5
Lepreti, F., Carbone, V., Spolaore, M., Antoni, V., Cavazzana, R., Martines, E., et al. (2009). Yaglom law for electrostatic turbulence in laboratory magnetized plasmas. EUROPHYSICS LETTERS, 86(2) [10.1209/0295-5075/86/25001].
Lepreti, F; Carbone, V; Spolaore, M; Antoni, V; Cavazzana, R; Martines, E; Serianni, G; Veltri, P; Vianello, N; Zuin, M
File in questo prodotto:
File Dimensione Formato  
088 - EPL 09 Yaglom.pdf

Solo gestori archivio

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 508.56 kB
Formato Adobe PDF
508.56 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/355828
Citazioni
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 3
Social impact