Surface roughness-aided hard X-ray emission from carbon nanotubes

Bagchi, Suman ; Prem Kiran, P. ; Bhuyan, M. K. ; Krishnamurthy, M. ; Yang, K. ; Rao, A. M. ; Ravindra Kumar, G. (2010) Surface roughness-aided hard X-ray emission from carbon nanotubes Pramana - Journal of Physics, 75 (6). pp. 1197-1202. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/describe/article/pram/075/06/...

Related URL: http://dx.doi.org/10.1007/s12043-010-0206-5

Abstract

Efficient low debris hard X-ray source based on Multiwalled Carbon Nanotubes (MWNT) irradiated by intense, femtosecond laser over an intensity range of 1015–1017 W cm−2 μm2 is reported. The MWNT targets yield two orders of magnitude higher X-rays (indicating significant enhancement of laser coupling) and three orders of magnitude lower debris compared to conventional metallic targets under identical experimental conditions. The simple analytical model explains the basic experimental observations and also serves as a guide to design efficient targets to achieve low-debris laser plasma-based hard X-ray sources at low laser intensities suitable for multi-kHz operation.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Carbon Nanotubes Intense Femtosecond Lasers; X-rays; Local Field Enhancement
ID Code:102731
Deposited On:02 Feb 2018 04:36
Last Modified:02 Feb 2018 04:36

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