Volumetric intensity dependence on the formation of molecular and atomic ions within a high intensity laser focus

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Volumetric intensity dependence on the formation of molecular and atomic ions within a high intensity laser focus. / Robson, L; Ledingham, K W D; McKenna, P; McCanny, T; Shimizu, S; Yang, J M; Wahlström, Claes-Göran; Lopez, Rodrigo; Varju, Katalin; Johnsson, Per; Mauritsson, Johan.

I: Journal of the American Society for Mass Spectrometry, Vol. 16, Nr. 1, 2005, s. 82-89.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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Author

Robson, L ; Ledingham, K W D ; McKenna, P ; McCanny, T ; Shimizu, S ; Yang, J M ; Wahlström, Claes-Göran ; Lopez, Rodrigo ; Varju, Katalin ; Johnsson, Per ; Mauritsson, Johan. / Volumetric intensity dependence on the formation of molecular and atomic ions within a high intensity laser focus. I: Journal of the American Society for Mass Spectrometry. 2005 ; Vol. 16, Nr. 1. s. 82-89.

RIS

TY - JOUR

T1 - Volumetric intensity dependence on the formation of molecular and atomic ions within a high intensity laser focus

AU - Robson, L

AU - Ledingham, K W D

AU - McKenna, P

AU - McCanny, T

AU - Shimizu, S

AU - Yang, J M

AU - Wahlström, Claes-Göran

AU - Lopez, Rodrigo

AU - Varju, Katalin

AU - Johnsson, Per

AU - Mauritsson, Johan

PY - 2005

Y1 - 2005

N2 - The mechanism of atomic and molecular ionization in intense, ultra-short laser fields is a subject which continues to receive considerable attention. An inherent difficulty with techniques involving the tight focus of a laser beam is the continuous distribution of intensities contained within the focus, which can vary over several orders of magnitude. The present study adopts time of flight mass spectrometry coupled with a high intensity (8 X 10(15) Wcm(-2)), ultra-short (20 fs) pulse laser in order to investigate the ionization and dissociation of the aromatic molecule benzene-d1 (C6H5D) as a function of intensity within a focused laser beam, by scanning the laser focus in the direction of propagation, while detecting ions produced only in a "thin" slice (400 and 800 mum) of the focus. The resultant TOF mass spectra varies significantly, highlighting the dependence on the range of specific intensities accessed and their volumetric weightings on the ionization/dissociation pathways accessed.

AB - The mechanism of atomic and molecular ionization in intense, ultra-short laser fields is a subject which continues to receive considerable attention. An inherent difficulty with techniques involving the tight focus of a laser beam is the continuous distribution of intensities contained within the focus, which can vary over several orders of magnitude. The present study adopts time of flight mass spectrometry coupled with a high intensity (8 X 10(15) Wcm(-2)), ultra-short (20 fs) pulse laser in order to investigate the ionization and dissociation of the aromatic molecule benzene-d1 (C6H5D) as a function of intensity within a focused laser beam, by scanning the laser focus in the direction of propagation, while detecting ions produced only in a "thin" slice (400 and 800 mum) of the focus. The resultant TOF mass spectra varies significantly, highlighting the dependence on the range of specific intensities accessed and their volumetric weightings on the ionization/dissociation pathways accessed.

U2 - 10.1016/j.jasms.2004.09.018

DO - 10.1016/j.jasms.2004.09.018

M3 - Article

VL - 16

SP - 82

EP - 89

JO - Journal of the American Society for Mass Spectrometry

JF - Journal of the American Society for Mass Spectrometry

SN - 1879-1123

IS - 1

ER -