In this paper we report on the radiography of a shock-compressed target using laser produced proton beams. A low-density carbon foam target was shock compressed by long pulse high-energy laser beams. The shock front was transversally probed with a proton beam produced in the interaction of a high intensity laser beam with a gold foil. We show that from radiography data, the density profile in the shocked target can be deduced using Monte Carlo simulations. By changing the delay between long and short pulse beams, we could probe different plasma conditions and structures, demonstrating that the details of the steep density gradient can be resolved. This technique is validated as a diagnostic for the investigation of warm dense plasmas, allowing an in situ characterization of high-density contrasted plasmas.
Proton radiography of a shock-compressed target / A., Ravasio; L., Romagnani; S., Le Pape; A., Benuzzi Mounaix; C., Cecchetti; D., Batani; T., Boehly; M., Borghesi; R., Dezulian; L., Gremillet; E., Henry; D., Hicks; B., Loupias; A., Mackinnon; N., Ozaki; H. S., Park; P., Patel; Schiavi, Angelo; T., Vinci; R., Clarke; M., Notley; S., Bandyopadhyay; M., Koenig. - In: PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS. - ISSN 1539-3755. - STAMPA. - 82:1(2010), p. 016407. [10.1103/physreve.82.016407]
Proton radiography of a shock-compressed target
SCHIAVI, ANGELO;
2010
Abstract
In this paper we report on the radiography of a shock-compressed target using laser produced proton beams. A low-density carbon foam target was shock compressed by long pulse high-energy laser beams. The shock front was transversally probed with a proton beam produced in the interaction of a high intensity laser beam with a gold foil. We show that from radiography data, the density profile in the shocked target can be deduced using Monte Carlo simulations. By changing the delay between long and short pulse beams, we could probe different plasma conditions and structures, demonstrating that the details of the steep density gradient can be resolved. This technique is validated as a diagnostic for the investigation of warm dense plasmas, allowing an in situ characterization of high-density contrasted plasmas.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
