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Magnetic Signatures of Radiation-Driven Double Ablation Fronts.
Campbell, P T; Walsh, C A; Russell, B K; Chittenden, J P; Crilly, A; Fiksel, G; Nilson, P M; Thomas, A G R; Krushelnick, K; Willingale, L.
Affiliation
  • Campbell PT; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
  • Walsh CA; Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom.
  • Russell BK; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
  • Chittenden JP; Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom.
  • Crilly A; Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom.
  • Fiksel G; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
  • Nilson PM; Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA.
  • Thomas AGR; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
  • Krushelnick K; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
  • Willingale L; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, 2200 Bonisteel Boulevard, Ann Arbor, Michigan 48109, USA.
Phys Rev Lett ; 125(14): 145001, 2020 Oct 02.
Article in En | MEDLINE | ID: mdl-33064539
ABSTRACT
In experiments performed with the OMEGA EP laser system, magnetic field generation in double ablation fronts was observed. Proton radiography measured the strength, spatial profile, and temporal dynamics of self-generated magnetic fields as the target material was varied between plastic, aluminum, copper, and gold. Two distinct regions of magnetic field are generated in mid-Z targets-one produced by gradients from electron thermal transport and the second from radiation-driven gradients. Extended magnetohydrodynamic simulations including radiation transport reproduced key aspects of the experiment, including field generation and double ablation front formation.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2020 Type: Article Affiliation country: United States
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2020 Type: Article Affiliation country: United States