TY - JOUR
T1 - Short Intense Laser Pulse Collapse in Near-Critical Plasma
AU - Sylla, F.
AU - Flacco, A.
AU - Kahaly, S.
AU - Veltcheva, M.
AU - Lifschitz, A.
AU - Malka, V.
AU - d'Humieres, E.
AU - Andriyash, I.
AU - Tikhonchuk, V.
N1 - The authors acknowledge the support of OSEO Project No. I0901001W-SAPHIR, the support of the European Research Council through the PARIS ERC project (Contract No. 226424), and the National research Grant No. ANR-08-NT08-1-38025-1. This work was partially supported by EURATOM within the “Keep-in-Touch” activities and the Aquitaine Region Council. Also, we were granted access to the HPC resources of CINES under allocations 2011-056129 and 2012-056129 made by GENCI (Grand Equipement National de Calcul Intensif).
PY - 2013/2/19
Y1 - 2013/2/19
N2 - It is observed that the interaction of an intense ultrashort laser pulse with a near-critical gas jet results in the pulse collapse and the deposition of a significant fraction of the energy. This deposition happens in a small and well-localized volume in the rising part of the gas jet, where the electrons are efficiently accelerated and heated. A collisionless plasma expansion over similar to 150 mu m at a subrelativistic velocity (similar to c/3) has been optically monitored in time and space, and attributed to the quasistatic field ionization of the gas associated with the hot electron current. Numerical simulations in good agreement with the observations suggest the acceleration in the collapse region of relativistic electrons, along with the excitation of a sizable magnetic dipole that sustains the electron current over several picoseconds. DOI: 10.1103/PhysRevLett.110.085001
AB - It is observed that the interaction of an intense ultrashort laser pulse with a near-critical gas jet results in the pulse collapse and the deposition of a significant fraction of the energy. This deposition happens in a small and well-localized volume in the rising part of the gas jet, where the electrons are efficiently accelerated and heated. A collisionless plasma expansion over similar to 150 mu m at a subrelativistic velocity (similar to c/3) has been optically monitored in time and space, and attributed to the quasistatic field ionization of the gas associated with the hot electron current. Numerical simulations in good agreement with the observations suggest the acceleration in the collapse region of relativistic electrons, along with the excitation of a sizable magnetic dipole that sustains the electron current over several picoseconds. DOI: 10.1103/PhysRevLett.110.085001
UR - http://www.scopus.com/inward/record.url?scp=84874159185&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.110.085001
DO - 10.1103/PhysRevLett.110.085001
M3 - مقالة
SN - 0031-9007
VL - 110
JO - Physical review letters
JF - Physical review letters
IS - 8
M1 - 085001
ER -