Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry

Abstract Secondary ion mass spectrometry is an excellent technique of analytical chemistry, where primary ions sputter a solid sample generating the secondary ions which are determined. Although the ion yield is inherently low, it can be enhanced by using a post-ionization of sputtered neutral speci...

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Autores principales:	Dusan Lorenc, Monika Jerigova, Monika Stupavska, Dusan Velic
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/839e5dea7a92408ea53176c22da618c1
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id	oai:doaj.org-article:839e5dea7a92408ea53176c22da618c1
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spelling	oai:doaj.org-article:839e5dea7a92408ea53176c22da618c12021-12-02T12:30:12ZAdaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry10.1038/s41598-017-06562-92045-2322https://doaj.org/article/839e5dea7a92408ea53176c22da618c12017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06562-9https://doaj.org/toc/2045-2322Abstract Secondary ion mass spectrometry is an excellent technique of analytical chemistry, where primary ions sputter a solid sample generating the secondary ions which are determined. Although the ion yield is inherently low, it can be enhanced by using a post-ionization of sputtered neutral species. Our novel approach integrates this technique with a near infrared femtosecond laser post-ionization based on an adaptive control through a laser pulse shaper. The shaping of the laser pulse provides adaptive control to select a mass peak of interest and to enhance this peak intensity. Versatility is confirmed by optimizing the ion yield for different molecules (tryptophan, anthracene, polyethylene, and oxalic acid) with focus on parent ion enhancement, fragmentation process, sublimation effect, and excited secondary species. This proof-of-concept experiment provides not only a nonspecific increase of the overall ion yield, but also the selection of specific secondary species and the adaptive enhancement of their intensities on the order of 100, potentially simplifying data interpretation. Such tailored spectra might advance the (secondary ion) mass spectrometry to new capabilities.Dusan LorencMonika JerigovaMonika StupavskaDusan VelicNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dusan Lorenc Monika Jerigova Monika Stupavska Dusan Velic Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry
description	Abstract Secondary ion mass spectrometry is an excellent technique of analytical chemistry, where primary ions sputter a solid sample generating the secondary ions which are determined. Although the ion yield is inherently low, it can be enhanced by using a post-ionization of sputtered neutral species. Our novel approach integrates this technique with a near infrared femtosecond laser post-ionization based on an adaptive control through a laser pulse shaper. The shaping of the laser pulse provides adaptive control to select a mass peak of interest and to enhance this peak intensity. Versatility is confirmed by optimizing the ion yield for different molecules (tryptophan, anthracene, polyethylene, and oxalic acid) with focus on parent ion enhancement, fragmentation process, sublimation effect, and excited secondary species. This proof-of-concept experiment provides not only a nonspecific increase of the overall ion yield, but also the selection of specific secondary species and the adaptive enhancement of their intensities on the order of 100, potentially simplifying data interpretation. Such tailored spectra might advance the (secondary ion) mass spectrometry to new capabilities.
format	article
author	Dusan Lorenc Monika Jerigova Monika Stupavska Dusan Velic
author_facet	Dusan Lorenc Monika Jerigova Monika Stupavska Dusan Velic
author_sort	Dusan Lorenc
title	Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry
title_short	Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry
title_full	Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry
title_fullStr	Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry
title_full_unstemmed	Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry
title_sort	adaptive control of ion yield in femtosecond laser post-ionization for secondary ion mass spectrometry
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/839e5dea7a92408ea53176c22da618c1
work_keys_str_mv	AT dusanlorenc adaptivecontrolofionyieldinfemtosecondlaserpostionizationforsecondaryionmassspectrometry AT monikajerigova adaptivecontrolofionyieldinfemtosecondlaserpostionizationforsecondaryionmassspectrometry AT monikastupavska adaptivecontrolofionyieldinfemtosecondlaserpostionizationforsecondaryionmassspectrometry AT dusanvelic adaptivecontrolofionyieldinfemtosecondlaserpostionizationforsecondaryionmassspectrometry
_version_	1718394407428816896

Adaptive Control of Ion Yield in Femtosecond Laser Post-ionization for Secondary Ion Mass Spectrometry

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