Turbulence in Plasmas

Turbulence is an ubiquitous phenomenon that can be observed on a huge range of scales, from galaxy clusters down to micro- and nano-fluidics. It is observed mostly in neutral flows, but also in charged, magnetized flows such as astrophysical plasmas. The study of turbulence requires a multiple approach: theoretical, experimental, based on data analysis and on numerical simulations. All these aspects are exploited here, with particular focus on space and laboratory turbulent plasmas.

Most of the visible matter in the universe is in the state of plasma. Often times, astrophysical plasmas have highly turbulent dynamics, resulting in a large number of interesting processes such as: energy dissipation, particle acceleration, excitation of electromagnetic waves, particle heating, magnetic reconnection, formation of shocks. All these phenomena can be studied in-situ only in space plasma, where instruments on-board scientific space missions can take measurements. Data can be studied using specific diagnostic tools, which allow the validation of theories and models. A substantial use of numerical simulations is also necessary. The study of turbulence in the interplanetary space is therefore of broad interest for the understanding of the dynamics of astrophysical plasmas, but also for its implications on laboratory plasmas and for the Sun-Earth interaction.

The study of space plasmas turbulence is based on three main approaches: the analysis of data provided by the scientific mission; the development of theoretical models and novel data analysis techniques; the use of numerical simulations (massive computational resources are often required; these are provided by large facilities for high performance computing, such as CINECA, or the UNICAL HPCC. Examples are the full characterization of intermittency in solar wind turbulence [Sorriso-Valvo et al. 1999; 2015], and the validation of the theoretical prediction for the scaling law of the energy flux in solar wind turbulence [Sorriso-Valvo et al., 2007].

Facilities & Labs

S.Li.M. Lab @ Roma

People

Luca_Sorriso_valvoLuca

Sorriso-Valvo

CNR Researcher

Publications

  1. Bruno, D. Telloni, L. Primavera, E. Pietropaolo, R. D’Amicis, L. Sorriso-Valvo, V. Carbone, F. Malara and P. Veltri, Radial evolution of intermitency of density fluctuations in the fast solar wind, The Astrophysical Journal 786, 53 (2014), DOI: 10.1088/0004-637X/786/1/53.
  2. H. K. Chen, L. Sorriso-Valvo, J. Safrankova, Z. Nemecek, Intermittency of solar wind density fluctuations from ion to electron scales,  The Astrophysical Journal Letter 789, L8 (2014), DOI: 10.1088/2041-8205/789/1/L8.
  3. De Vita, L. Sorriso-Valvo, F. Valentini, S. Servidio, L. Primavera, V. Carbone and P. Veltri, Analysis of cancellation exponents in two-dimensional Vlasov turbulence, Physics of Plasmas 21, 072315 (2014), DOI: 10.1063/1.4891339.
  4. Sorriso-Valvo, G. De Vita, M. Kazachenko, S. Krucker, L. Primavera, S. Servidio, A. Vecchio, B. Welsch, G. Fisher, F. Lepreti, V. Carbone, Sign singularity and flares in solar active region NOAA 11158, The Astrophysical Journal 801, 36 (2015), DOI: 10.1063/1.4891339
  5. Yordanova, S. Perri, L. Sorriso-Valvo and V. Carbone, Multipoint observation of anisotropy and intermittency in solar-wind turbulence, EPL 110, 19001 (2015), DOI: 10.1209/0295-5075/110/19001.
  6. Chasapis, A. Retinò, F. Sahraoui, A. Vaivads, Y. Khotyaintsev, D. Sundkvist, A. Greco, L. Sorriso-Valvo, P. Canu, Thin current sheets and associated electron heating in turbulent space plasma, The Astrophysical Journal Letters 804, L1 (2015), DOI: 10.1088/2041-8205/804/1/L1.
  7. Sorriso-Valvo, R. Marino, L. Lijoi, S. Perri and V. Carbone, Self-consistent Castaing distribution of solar wind turbulent fluctuations, The Astrophysical Journal, 807, 86 (2015), DOI: 10.1088/0004-637X/807/1/86.
  8. De Vita, A. Vecchio, L. Sorriso-Valvo, C. Briand, L. Primavera, S. Servidio, F. Lepreti and V. Carbone, Journal of Space Weather and Space Climate, 5, A28 (2015), DOI: 10.1051/swsc/2015029.
  9. Rossi, F. Califano, A. Retinò, L. Sorriso-Valvo, P. Henri, S. Servidio, F. Valentini, A. Chasapis, and L. Rezeau, Two-fluid numerical simulations of turbulence inside Kelvin-Helmholtz vortices: intermittency and reconnecting current sheets, Physics of Plasmas, 22, 122303 (2015), DOI: 10.1063/1.4936795.
  10. Leonardis, L. Sorriso-Valvo, F. Valentini, S. Servidio, F. Carbone and P. Veltri, Multifractal scaling and intermittency in hybrid Vlasov-Maxwell simulations of plasma turbulence, Physics of Plasmas, 23, 022307 (2016), DOI: 10.1063/1.4942417.
  11. Pucci, F. Malara, S. Perri, G. Zimbardo, L. Sorriso-Valvo and F. Valentini, Energetic particle transport in the presence of magnetic turbulence: influence of spectral extension and intermittency, Month. Notes R. Astron. Soc. 459, 3395 (2016), DOI: 10.1093/mnras/stw877.
  12. Vaivads et al., Turbulence Heating ObserveR – satellite mission proposal, J. Plasma Phys. 82, 905820501 (2016), DOI: 10.1017/S0022377816000775.

Other selected publications

  1. Sorriso-Valvo, V. Carbone, P. Veltri, G. Consolini, R. Bruno, Intermittency in the solar wind turbulence through probability distribution functions of fluctuations, Geophysical Research Letters 26, 1801-1804 (1999), DOI: 10.1029/1999GL900270.
  2. Carbone, L. Sorriso-Valvo, E. Martines, V. Antoni, P. Veltri, Intermittency and turbulence in a magnetically confined fusion plasma, Physical Review E 62, R49-R52 (2000), DOI: 10.1103/PhysRevE.62.R49.
  3. Sorriso-Valvo, R. Marino, V. Carbone, A. Noullez, F. Lepreti., P. Veltri, R. Bruno, B. Bavassano, Pietropaolo E., Observation of Inertial Energy Cascade in Interplanetary Space Plasma, Physical Review Letters 99, 115001-1-115001-4 (2007), DOI:             10.1103/PhysRevLett.99.115001.
  4. Alexandrova, V. Carbone, P. Veltri, L. Sorriso-Valvo, Small-scale energy cascade of the solar wind turbulence, The Astrophysical Journal 674, 1153-1157 (2008), DOI: 10.1086/524056.
  5. Carbone, R. Marino, L. Sorriso-Valvo, A. Noullez, R. Bruno, Scaling laws of turbulence and heating of fast solar wind: the role of density fluctuations, Physical Review Letters 103, 061102 (2009), DOI: 10.1103/PhysRevLett.103.061102.
  6. Zimbardo, A. Greco, L. Sorriso-Valvo, S. Perri, Z. Voros, G. Aburjania, K. Chargazia, O. Alexandrova, Magnetic Turbulence in the Geospace Environment, Space Science Reviews 156, 89 (2010), DOI: 10.1007/s11214-010-9692-5.
  7. Perri, V. Carbone, A. Vecchio, R. Bruno, H. Korth, T. H. Zurbuchen, L. Sorriso-Valvo, Phase-ynchronization, Energy Cascade, and Intermittency in Solar-Wind Turbulence, Physical Review Letters 109, 245004 (2012), DOI: 10.1103/PhysRevLett.109.245004
  8. Dudok de Wit, O. Alexandrova, I. Furno, L. Sorriso-Valvo, G. Zimbardo, Methods for Characterising Microphysical Processes in Plasmas, Space Science Reviews 178, 693 (2013), DOI: 10.1007/978-1-4899-7413-6_21
  9. Alexandrova, C. H. K. Chen, L. Sorriso-Valvo, T. Horbury, S. D. Bale,    Solar Wind Turbulence and the Role of Ion Instabilities, Space Science Reviews 178, 101, (2013), DOI: 10.1007/s11214-013-0004-8
  10. Maruca, S. D. Bale, L. Sorriso-Valvo, J. C. Kasper, M. L. Stevens, Collisional Thermalization of Hydrogen and Helium in Solar-Wind Plasma, Physical Review Letters 111, 241101 (2013), DOI: 10.1103/PhysRevLett.111.241101.

Project

Turboplasmas: FP7 European Marie Curie IRSES 2010-269297 , (2011-2014)

Anisotropy and intermittency in solar wind turbulence: ISSI Team, (2014-2015)

Kinetic Turbulence and Heating in the Solar Wind: ISSI Team (2013-2014)

Latest News

Technology Trasfer in Nanotechnology

Technology Transfer in Nanotechnology: Challenges and Opportunity

Lecce, 18/19 ottobre 2018

CNR NANOTEC c/o Campus Ecotekne

JRC in collaboration with the National Research Council (Cnr) is organising a workshop on Technology Transfer in Nanotechnology,

which will take place in CNR Nanotec (Lecce, Italy) on 18 and 19 October. This workshop is organised in the framework of the TTO-CIRCLE initiatives.   The aim of this event is to explore how technology transfer activities can be used as a mechanism to help EU industry, particularly Start-ups and SMEs, and Government in deploying and adopting Nano-technology. Practical examples will be presented to illustrate the potential of technology transfer in this area.   The workshop will gather technology providers, industry executives, technology transfer officers, policy makers and financial intermediaries to share experiences and lessons learned. One of the key objectives is to discuss policy implications at all levels that could help accelerating the adoption of Nanotechnology by the European manufacturing industry. More informations: https://ec.europa.eu/jrc/communities/community/european-tto-circle/event/technology-transfer-nanotechnology Download Locandina

Nanotechnology Transfer Day

26 Luglio 2018 - Lecce

CNR NANOTEC c/o Campus Ecotekne Siglato l’accordo lo scorso maggio tra CNR NANOTEC e Pairstech Capital Management, ha preso il via la collaborazione con PhD TT per la valutazione della ricerca

E’partita la collaborazione con PhD TT per la valorizzazione della ricerca sulla base dell’accordo siglato lo scorso Maggio tra CNR NANOTEC e Pairstech Capital Management, società di gestione patrimoniale che fornisce agli investitori istituzionali e privati un insieme di veicoli di investimento, al fine di valorizzare i risultati della ricerca svolta all'interno dell'Istituto.

Giovedì 19 Luglio dalle ore 11 alle ore 14 nella sede del CNR Nanotec di Lecce si è tenuto un incontro sul trasferimento tecnologico nel settore delle nanotecnologie applicate al settore biomedicale.

L’evento è stato organizzato dall’ufficio di Trasferimento Tecnologico del CNR Nanotec che ha inaugurato con questa giornata un ciclo di eventi mirato a presentare agli attori dell’ecosistema dell’innovazione nel settore delle nanotecnologie i vari modelli e alcune best practice di trasferimento tecnologico. In questa prima giornata il dott. Heber Verri e la dott.ssa Paola Urbani hanno presentato il nuovo modello di trasferimento tecnologico PhD TTãIndex Model.

PhD TT è una realtà italiana completamente indipendente specializzata in trasferimento tecnologico, è un acceleratore organizzato per il Go to Venture Practice, orientata al mondo delle Lifes Sciences.

PhD TT ha sviluppato un nuovo modello di trasferimento tecnologico: il PhD TT©INDEX MODEL dedicato alla generazione di valore dell'innovazione, focalizzato alla riduzione dei rischi delle opportunità di investimento a sostegno della ricerca.

I ricercatori intervengono attivamente nell'analisi iniziale di fattibilità e nella costituzione della futura società (start-up), con l'obiettivo di attrarre capitale di rischio utile a sostenere la fase del trasferimento tecnologico nella visione della "Research for go-to-market".

Il modello PhD TT nasce da un bisogno del mercato, quello di far dialogare due mondi estremamente diversi tra loro: il mondo della ricerca e il mondo degli investimenti.

PhD TT supporta tutte le attività in collaborazione con il TTO - CNR Nanotec con un team di lavoro esperto e grazie a un comitato scientifico-economico qualificato.

In occasione dell'evento del 19/7 u.s. al CNR Nanotec di Lecce, PHD TT ha presentato il proprio track record, dove si sono potuti valutare in dettaglio i casi di successo di intervento del PhD TT©INDEX MODEL.

  Comunicato Stampa Photo Gallery

Disordered serendipity: a glassy path to discovery

A workshop in honour of Giorgio Parisi’s 70th birthday

September 19-21, 2018 - Roma

Sapienza University

With the occasion of celebrating Giorgio Parisi 70th birthday, the conference "Disordered serendipity: a glassy path to discovery" brings to Rome many among the world-leading experts in the field of complex systems. In order to properly represent the many fields of research where Giorgio Parisi gave a relevant contribution in his studies of disordered systems, the conference covers a broad spectrum of topics: from  fundamental and rigorous analysis of the statistical mechanics of disorder systems to applications in biology and computer science. These subjects are deeply interconnected since they are characterized by the presence of glassy behavior.

 

https://sites.google.com/site/disorderedserendipity/