Macroscopic Transport of Mega-ampere Electron Currents in Aligned Carbon-Nanotube Arrays

Chatterjee, Gourab and Singh, Prashant Kumar and Ahmed, Saima and Robinson, APL and Lad, AmitD and Mondal, Sudipta and Narayanan, V and Srivastava, Iti and Koratkar, Nikhil and Pasley, John and Sood, AK and Kumar, RavindraG (2012) Macroscopic Transport of Mega-ampere Electron Currents in Aligned Carbon-Nanotube Arrays. In: PHYSICAL REVIEW LETTERS, 108 (23).

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Abstract

We demonstrate that aligned carbon-nanotube arrays are efficient transporters of laser-generated megaampere electron currents over distances as large as a millimeter. A direct polarimetric measurement of the temporal and the spatial evolution of the megagauss magnetic fields (as high as 120 MG) at the target rear at an intensity of (10(18)-10(19)) W/cm(2) was corroborated by the rear-side hot electron spectra. Simulations show that such high magnetic flux densities can only be generated by a very well collimated fast electron bunch.

Item Type:	Journal Article
Publication:	PHYSICAL REVIEW LETTERS
Publisher:	AMER PHYSICAL SOC
Additional Information:	Copyright for this article belongs to American Physical Society
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	07 Jul 2012 08:16
Last Modified:	07 Jul 2012 08:18
URI:	http://eprints.iisc.ac.in/id/eprint/44758

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