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Velocity map ion imaging and velocity-resolved action spectroscopy of H atom photofragments via Doppler-free multiphoton ionization.

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Title: Velocity map ion imaging and velocity-resolved action spectroscopy of H atom photofragments via Doppler-free multiphoton ionization.
Authors: Epshtein, Michael1, Monsa, Yaakov1, Portnov, Alexander1, Bar, Ilana1 ibar@bgu.ac.il
Source: Chemical Physics Letters. Jun2017, Vol. 677, p1-6. 6p.
Subjects: Hydrogen atom, Imaging systems, Photochemistry, Multiphoton ionization, Doppler broadening, Methylamines, Spectrum analysis
Abstract: Hydrogen atom photofragments with high velocities in the laboratory frame lead to strong Doppler broadening of the (2 + 1) resonance-enhanced multiphoton ionization transition. Here, an alternative setup for Doppler-free ion imaging is demonstrated and explored for predissociation of methylamine and probing of H photofragments, at close wavelengths. This approach enables measurement of the entire velocity distributions in each laser pulse, enhances sensitivity and consequently provides acquisition of high quality H images and action spectra. These results shed light on dissociation dynamics and can be foreseen to be useful in revealing the dynamics in other molecular systems. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Physics Letters is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 122645500
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Velocity map ion imaging and velocity-resolved action spectroscopy of H atom photofragments via Doppler-free multiphoton ionization.
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  Data: <searchLink fieldCode="AR" term="%22Epshtein%2C+Michael%22">Epshtein, Michael</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Monsa%2C+Yaakov%22">Monsa, Yaakov</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Portnov%2C+Alexander%22">Portnov, Alexander</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bar%2C+Ilana%22">Bar, Ilana</searchLink><relatesTo>1</relatesTo><i> ibar@bgu.ac.il</i>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Physics+Letters%22">Chemical Physics Letters</searchLink>. Jun2017, Vol. 677, p1-6. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Hydrogen+atom%22">Hydrogen atom</searchLink><br /><searchLink fieldCode="DE" term="%22Imaging+systems%22">Imaging systems</searchLink><br /><searchLink fieldCode="DE" term="%22Photochemistry%22">Photochemistry</searchLink><br /><searchLink fieldCode="DE" term="%22Multiphoton+ionization%22">Multiphoton ionization</searchLink><br /><searchLink fieldCode="DE" term="%22Doppler+broadening%22">Doppler broadening</searchLink><br /><searchLink fieldCode="DE" term="%22Methylamines%22">Methylamines</searchLink><br /><searchLink fieldCode="DE" term="%22Spectrum+analysis%22">Spectrum analysis</searchLink>
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  Data: Hydrogen atom photofragments with high velocities in the laboratory frame lead to strong Doppler broadening of the (2 + 1) resonance-enhanced multiphoton ionization transition. Here, an alternative setup for Doppler-free ion imaging is demonstrated and explored for predissociation of methylamine and probing of H photofragments, at close wavelengths. This approach enables measurement of the entire velocity distributions in each laser pulse, enhances sensitivity and consequently provides acquisition of high quality H images and action spectra. These results shed light on dissociation dynamics and can be foreseen to be useful in revealing the dynamics in other molecular systems. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Chemical Physics Letters is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.cplett.2017.03.075
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 6
        StartPage: 1
    Subjects:
      – SubjectFull: Hydrogen atom
        Type: general
      – SubjectFull: Imaging systems
        Type: general
      – SubjectFull: Photochemistry
        Type: general
      – SubjectFull: Multiphoton ionization
        Type: general
      – SubjectFull: Doppler broadening
        Type: general
      – SubjectFull: Methylamines
        Type: general
      – SubjectFull: Spectrum analysis
        Type: general
    Titles:
      – TitleFull: Velocity map ion imaging and velocity-resolved action spectroscopy of H atom photofragments via Doppler-free multiphoton ionization.
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            NameFull: Monsa, Yaakov
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            NameFull: Portnov, Alexander
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            NameFull: Bar, Ilana
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            – D: 01
              M: 06
              Text: Jun2017
              Type: published
              Y: 2017
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              Value: 677
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