Laser-driven strong magnetostatic fields with applications to charged beam transport and magnetized high energy-density physics

TY - JOUR

T1 - Laser-driven strong magnetostatic fields with applications to charged beam transport and magnetized high energy-density physics

AU - Santos, J. J.

AU - Bailly-Grandvaux, M.

AU - Ehret, M.

AU - Arefiev, A. V.

AU - Batani, D.

AU - Beg, F N

AU - Calisti, A

AU - Ferri, S

AU - Florido, R.

AU - Forestier-Colleoni, P.

AU - Fujioka, S.

AU - Gigosos, M. A.

AU - Giuffrida, L.

AU - Gremillet, L.

AU - Honrubia, J. J.

AU - Kojima, S.

AU - Korneev, Ph

AU - Law, K. F.F.

AU - Marquès, J. R.

AU - Morace, A.

AU - Mossé, C.

AU - Peyrusse, O.

AU - Rose, S.

AU - Roth, M.

AU - Sakata, S.

AU - Schaumann, G.

AU - Suzuki-Vidal, F.

AU - Tikhonchuk, V. T.

AU - Toncian, T.

AU - Woolsey, N.

AU - Zhang, Z.

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Powerful nanosecond laser-plasma processes are explored to generate discharge currents of a few 100 kA in coil targets, yielding magnetostatic fields (B-fields) in excess of 0.5 kT. The quasi-static currents are provided from hot electron ejection from the laser-irradiated surface. According to our model, which describes the evolution of the discharge current, the major control parameter is the laser irradiance Ilasλlas2. The space-time evolution of the B-fields is experimentally characterized by high-frequency bandwidth B-dot probes and proton-deflectometry measurements. The magnetic pulses, of ns-scale, are long enough to magnetize secondary targets through resistive diffusion. We applied it in experiments of laser-generated relativistic electron transport through solid dielectric targets, yielding an unprecedented 5-fold enhancement of the energy-density flux at 60 μm depth, compared to unmagnetized transport conditions. These studies pave the ground for magnetized high-energy density physics investigations, related to laser-generated secondary sources of radiation and/or high-energy particles and their transport, to high-gain fusion energy schemes, and to laboratory astrophysics.

AB - Powerful nanosecond laser-plasma processes are explored to generate discharge currents of a few 100 kA in coil targets, yielding magnetostatic fields (B-fields) in excess of 0.5 kT. The quasi-static currents are provided from hot electron ejection from the laser-irradiated surface. According to our model, which describes the evolution of the discharge current, the major control parameter is the laser irradiance Ilasλlas2. The space-time evolution of the B-fields is experimentally characterized by high-frequency bandwidth B-dot probes and proton-deflectometry measurements. The magnetic pulses, of ns-scale, are long enough to magnetize secondary targets through resistive diffusion. We applied it in experiments of laser-generated relativistic electron transport through solid dielectric targets, yielding an unprecedented 5-fold enhancement of the energy-density flux at 60 μm depth, compared to unmagnetized transport conditions. These studies pave the ground for magnetized high-energy density physics investigations, related to laser-generated secondary sources of radiation and/or high-energy particles and their transport, to high-gain fusion energy schemes, and to laboratory astrophysics.

UR - http://www.scopus.com/inward/record.url?scp=85047012227&partnerID=8YFLogxK

U2 - 10.1063/1.5018735

DO - 10.1063/1.5018735

M3 - Article

AN - SCOPUS:85047012227

SN - 1070-664X

VL - 25

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 5

M1 - 056705

ER -