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Title: Hot ion generation from nanostructured surfaces under intense femtosecond laser irradiation

Abstract

Studies of ion emission from nanostructured metallic surfaces excited by intense (0.5-6.3x10{sup 16} W cm{sup -2}) 50 fs laser demonstrate that ''hotter'' electrons need not to give rise hotter ions, contrary to conventional expectation. Such surfaces produce twice as many ions as planar surfaces in the moderate energy regime (16-75 keV), but their yield in the higher energy range (75-2000 keV) is substantially lower. Surface modulations also influence ion beam divergence.

Authors:
; ; ; ; ; ;  [1]
  1. Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Colaba, Mumbai 400005 (India)
Publication Date:
OSTI Identifier:
20960191
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 14; Other Information: DOI: 10.1063/1.2715108; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; ION BEAMS; ION EMISSION; ION SOURCES; KEV RANGE 10-100; KEV RANGE 100-1000; LASER RADIATION; LASERS; MEV RANGE 01-10; NANOSTRUCTURES

Citation Formats

Bagchi, S., Prem Kiran, P., Bhuyan, M. K., Bose, S., Ayyub, P., Krishnamurthy, M., and Ravindra Kumar, G.. Hot ion generation from nanostructured surfaces under intense femtosecond laser irradiation. United States: N. p., 2007. Web. doi:10.1063/1.2715108.
Bagchi, S., Prem Kiran, P., Bhuyan, M. K., Bose, S., Ayyub, P., Krishnamurthy, M., & Ravindra Kumar, G.. Hot ion generation from nanostructured surfaces under intense femtosecond laser irradiation. United States. doi:10.1063/1.2715108.
Bagchi, S., Prem Kiran, P., Bhuyan, M. K., Bose, S., Ayyub, P., Krishnamurthy, M., and Ravindra Kumar, G.. Mon . "Hot ion generation from nanostructured surfaces under intense femtosecond laser irradiation". United States. doi:10.1063/1.2715108.
@article{osti_20960191,
title = {Hot ion generation from nanostructured surfaces under intense femtosecond laser irradiation},
author = {Bagchi, S. and Prem Kiran, P. and Bhuyan, M. K. and Bose, S. and Ayyub, P. and Krishnamurthy, M. and Ravindra Kumar, G.},
abstractNote = {Studies of ion emission from nanostructured metallic surfaces excited by intense (0.5-6.3x10{sup 16} W cm{sup -2}) 50 fs laser demonstrate that ''hotter'' electrons need not to give rise hotter ions, contrary to conventional expectation. Such surfaces produce twice as many ions as planar surfaces in the moderate energy regime (16-75 keV), but their yield in the higher energy range (75-2000 keV) is substantially lower. Surface modulations also influence ion beam divergence.},
doi = {10.1063/1.2715108},
journal = {Applied Physics Letters},
number = 14,
volume = 90,
place = {United States},
year = {Mon Apr 02 00:00:00 EDT 2007},
month = {Mon Apr 02 00:00:00 EDT 2007}
}