Tunable mega-ampere electron current propagation in solids by dynamic control of lattice melt.
The influence of lattice-melt-induced resistivity gradients on the transport of mega-ampere currents of fast electrons in solids is investigated numerically and experimentally using laser-accelerated protons to induce isochoric heating. Tailoring the heating profile enables the resistive magnetic fields which strongly influence the current propagation to be manipulated. This tunable laser-driven process enables important fast electron beam properties, including the beam divergence, profile, and symmetry to be actively tailored, and without recourse to complex target manufacture.
SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
D A
DA
MacLellan
SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
D C
DC
Carroll
SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
R J
RJ
Gray
Central Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, United Kingdom.
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Booth
Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden.
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M
Burza
Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185, USA.
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MP
Desjarlais
Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
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F
Du
Central Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, United Kingdom.
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D
Neely
SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
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HW
Powell
Central Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, United Kingdom.
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Robinson
SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom and Central Laser Facility, STFC Rutherford Appleton Laboratory, Oxfordshire OX11 0QX, United Kingdom.
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Scott
Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
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Yuan
Department of Physics, Lund University, P.O. Box 118, S-22100 Lund, Sweden.
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CG
Wahlström
SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG, United Kingdom.
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McKenna