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Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation

Enhancement of X-ray emission was observed from a micro-jet of a nano-colloidal gold suspension in air under double-pulse excitation of ultrashort (40 fs) near-IR laser pulses. Temporal and spatial overlaps between the pre-pulse and the main pulse were optimized for the highest X-ray emission. The m...

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Autores principales: Hsu, Wei-Hung, Masim, Frances Camille P, Balčytis, Armandas, Huang, Hsin-Hui, Yonezawa, Tetsu, Kuchmizhak, Aleksandr A, Juodkazis, Saulius, Hatanaka, Koji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6204784/
https://www.ncbi.nlm.nih.gov/pubmed/30416911
http://dx.doi.org/10.3762/bjnano.9.242
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author Hsu, Wei-Hung
Masim, Frances Camille P
Balčytis, Armandas
Huang, Hsin-Hui
Yonezawa, Tetsu
Kuchmizhak, Aleksandr A
Juodkazis, Saulius
Hatanaka, Koji
author_facet Hsu, Wei-Hung
Masim, Frances Camille P
Balčytis, Armandas
Huang, Hsin-Hui
Yonezawa, Tetsu
Kuchmizhak, Aleksandr A
Juodkazis, Saulius
Hatanaka, Koji
author_sort Hsu, Wei-Hung
collection PubMed
description Enhancement of X-ray emission was observed from a micro-jet of a nano-colloidal gold suspension in air under double-pulse excitation of ultrashort (40 fs) near-IR laser pulses. Temporal and spatial overlaps between the pre-pulse and the main pulse were optimized for the highest X-ray emission. The maximum X-ray intensity was obtained at a 1–7 ns delay of the main pulse irradiation after the pre-pulse irradiation with the micro-jet position shifted along the laser beam propagation. It was revealed that the volume around gold nanoparticles where the permittivity is near zero, ε ≈ 0, accounts for the strongest absorption, which leads to the effective enhancements of X-ray emission.
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spelling pubmed-62047842018-11-09 Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation Hsu, Wei-Hung Masim, Frances Camille P Balčytis, Armandas Huang, Hsin-Hui Yonezawa, Tetsu Kuchmizhak, Aleksandr A Juodkazis, Saulius Hatanaka, Koji Beilstein J Nanotechnol Full Research Paper Enhancement of X-ray emission was observed from a micro-jet of a nano-colloidal gold suspension in air under double-pulse excitation of ultrashort (40 fs) near-IR laser pulses. Temporal and spatial overlaps between the pre-pulse and the main pulse were optimized for the highest X-ray emission. The maximum X-ray intensity was obtained at a 1–7 ns delay of the main pulse irradiation after the pre-pulse irradiation with the micro-jet position shifted along the laser beam propagation. It was revealed that the volume around gold nanoparticles where the permittivity is near zero, ε ≈ 0, accounts for the strongest absorption, which leads to the effective enhancements of X-ray emission. Beilstein-Institut 2018-10-01 /pmc/articles/PMC6204784/ /pubmed/30416911 http://dx.doi.org/10.3762/bjnano.9.242 Text en Copyright © 2018, Hsu et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms)
spellingShingle Full Research Paper
Hsu, Wei-Hung
Masim, Frances Camille P
Balčytis, Armandas
Huang, Hsin-Hui
Yonezawa, Tetsu
Kuchmizhak, Aleksandr A
Juodkazis, Saulius
Hatanaka, Koji
Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation
title Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation
title_full Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation
title_fullStr Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation
title_full_unstemmed Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation
title_short Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation
title_sort enhancement of x-ray emission from nanocolloidal gold suspensions under double-pulse excitation
topic Full Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6204784/
https://www.ncbi.nlm.nih.gov/pubmed/30416911
http://dx.doi.org/10.3762/bjnano.9.242
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