Direct observation of ultrafast surface transport of laser-driven fast electrons in a solid target
Abstract
We demonstrate rapid spread of surface ionization on a glass target excited by an intense, ultrashort laser pulse at an intensity of 3 × 10{sup 17} W cm{sup −2}. Time- and space-resolved reflectivity of the target surface indicates that the initial plasma region created by the pump pulse expands at c/7. The measured quasi-static megagauss magnetic field is found to expand in a manner very similar to that of surface ionization. Two-dimensional particle-in-cell simulations reproduce measurements of surface ionization and magnetic fields. Both the experiment and simulation convincingly demonstrate the role of self-induced electric and magnetic fields in confining fast electrons along the target-vacuum interface.
- Authors:
-
- Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Mumbai 400005 (India)
- Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)
- Publication Date:
- OSTI Identifier:
- 22218399
- Resource Type:
- Journal Article
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 20; Journal Issue: 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRONS; EXCITED STATES; INTERFACES; LASER TARGETS; LASER-PRODUCED PLASMA; LASERS; MAGNETIC FIELDS; PLASMA DIAGNOSTICS; PLASMA PRODUCTION; PLASMA SIMULATION; REFLECTIVITY; SURFACE IONIZATION; SURFACES; TWO-DIMENSIONAL CALCULATIONS
Citation Formats
Singh, Prashant Kumar, Chatterjee, Gourab, Adak, Amitava, Ahmed, Saima, Lad, Amit D., Ravindra Kumar, G., Cui, Y. Q., Wang, W. M., Sheng, Z. M., and Key Laboratory for Laser Plasmas. Direct observation of ultrafast surface transport of laser-driven fast electrons in a solid target. United States: N. p., 2013.
Web. doi:10.1063/1.4830101.
Singh, Prashant Kumar, Chatterjee, Gourab, Adak, Amitava, Ahmed, Saima, Lad, Amit D., Ravindra Kumar, G., Cui, Y. Q., Wang, W. M., Sheng, Z. M., & Key Laboratory for Laser Plasmas. Direct observation of ultrafast surface transport of laser-driven fast electrons in a solid target. United States. https://doi.org/10.1063/1.4830101
Singh, Prashant Kumar, Chatterjee, Gourab, Adak, Amitava, Ahmed, Saima, Lad, Amit D., Ravindra Kumar, G., Cui, Y. Q., Wang, W. M., Sheng, Z. M., and Key Laboratory for Laser Plasmas. 2013.
"Direct observation of ultrafast surface transport of laser-driven fast electrons in a solid target". United States. https://doi.org/10.1063/1.4830101.
@article{osti_22218399,
title = {Direct observation of ultrafast surface transport of laser-driven fast electrons in a solid target},
author = {Singh, Prashant Kumar and Chatterjee, Gourab and Adak, Amitava and Ahmed, Saima and Lad, Amit D. and Ravindra Kumar, G. and Cui, Y. Q. and Wang, W. M. and Sheng, Z. M. and Key Laboratory for Laser Plasmas},
abstractNote = {We demonstrate rapid spread of surface ionization on a glass target excited by an intense, ultrashort laser pulse at an intensity of 3 × 10{sup 17} W cm{sup −2}. Time- and space-resolved reflectivity of the target surface indicates that the initial plasma region created by the pump pulse expands at c/7. The measured quasi-static megagauss magnetic field is found to expand in a manner very similar to that of surface ionization. Two-dimensional particle-in-cell simulations reproduce measurements of surface ionization and magnetic fields. Both the experiment and simulation convincingly demonstrate the role of self-induced electric and magnetic fields in confining fast electrons along the target-vacuum interface.},
doi = {10.1063/1.4830101},
url = {https://www.osti.gov/biblio/22218399},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 20,
place = {United States},
year = {Fri Nov 15 00:00:00 EST 2013},
month = {Fri Nov 15 00:00:00 EST 2013}
}
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