Fast ignition requires a precise knowledge of fast electron propagation in a dense hydrogen plasma. In this context, a dedicated HiPER (High Power laser Energy Research) experiment was performed on the VULCAN laser facility where the propagation of relativistic electron beams through cylindrically compressed plastic targets was studied. In this paper, we characterize the plasma parameters such as temperature and density during the compression of cylindrical polyimide shells filled with CH foams at three different initial densities. X-ray and proton radiography were used to measure the cylinder radius at different stages of the compression. By comparing both diagnostics results with 2D hydrodynamic simulations, we could infer densities from 2 to 11 g/cm(3) and temperatures from 30 to 120 eV at maximum compression at the center of targets. According to the initial foam density, kinetic, coupled (sometimes degenerated) plasmas were obtained. The temporal and spatial evolution of the resulting areal densities and electrical conductivities allow for testing electron transport in a wide range of configurations. (C) 2011 American Institute of Physics. {[doi: 10.1063/1.3578346]}

Vauzour, B., Perez, F., Volpe, L., Lancaster, K., Nicolai, P., Batani, D., et al. (2011). Laser-driven cylindrical compression of targets for fast electron transport study in warm and dense plasmas. PHYSICS OF PLASMAS, 18(4), 43108-43116 [10.1063/1.3578346].

Laser-driven cylindrical compression of targets for fast electron transport study in warm and dense plasmas

RICHETTA, MARIA;
2011-04-28

Abstract

Fast ignition requires a precise knowledge of fast electron propagation in a dense hydrogen plasma. In this context, a dedicated HiPER (High Power laser Energy Research) experiment was performed on the VULCAN laser facility where the propagation of relativistic electron beams through cylindrically compressed plastic targets was studied. In this paper, we characterize the plasma parameters such as temperature and density during the compression of cylindrical polyimide shells filled with CH foams at three different initial densities. X-ray and proton radiography were used to measure the cylinder radius at different stages of the compression. By comparing both diagnostics results with 2D hydrodynamic simulations, we could infer densities from 2 to 11 g/cm(3) and temperatures from 30 to 120 eV at maximum compression at the center of targets. According to the initial foam density, kinetic, coupled (sometimes degenerated) plasmas were obtained. The temporal and spatial evolution of the resulting areal densities and electrical conductivities allow for testing electron transport in a wide range of configurations. (C) 2011 American Institute of Physics. {[doi: 10.1063/1.3578346]}
28-apr-2011
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/01 - FISICA SPERIMENTALE
English
Con Impact Factor ISI
ignition; plasma density; plasma diagnostics; plasma light propagation; plasma temperature; plasma transport processes; relativistic plasmas
scitation.aip.org/content/aip/journal/pop/18/4/10.../1.3578346
Vauzour, B., Perez, F., Volpe, L., Lancaster, K., Nicolai, P., Batani, D., et al. (2011). Laser-driven cylindrical compression of targets for fast electron transport study in warm and dense plasmas. PHYSICS OF PLASMAS, 18(4), 43108-43116 [10.1063/1.3578346].
Vauzour, B; Perez, F; Volpe, L; Lancaster, K; Nicolai, P; Batani, D; Baton, S; Beg, F; Benedetti, C; Brambrink, E; Chawla, S; Dorchies, F; Fourment, C...espandi
Articolo su rivista
File in questo prodotto:
File Dimensione Formato  
Laser-driven_cylindrical_compression_of_targets_for_fast_electron_transport__study_in_warm_and_dense.pdf

solo utenti autorizzati

Descrizione: Articolo principale
Licenza: Non specificato
Dimensione 3.84 MB
Formato Adobe PDF
3.84 MB 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/2108/34150
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 21
social impact