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  • PACS. 52.38.Ph X-ray, γ-ray and particle generation – 52.50.Jm Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) – 36.40.Vz Optical properties of clusters  (1)
  • PACS: 82.40.Js; 82.50.Gw  (1)
  • 2000-2004  (2)
Collection
Keywords
  • PACS. 52.38.Ph X-ray, γ-ray and particle generation – 52.50.Jm Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) – 36.40.Vz Optical properties of clusters  (1)
  • PACS: 82.40.Js; 82.50.Gw  (1)
Publisher
Years
  • 2000-2004  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Femtosecond photodissociation dynamics of HNO3 after exitation of the S3-state at 200 nm (2000)
    Springer
    Applied physics 71 (2000), S. 385-390 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 82.40.Js; 82.50.Gw
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The photodissociation dynamics of HNO3 in the electronic S3 (2 1 A ′ ) state leading to the fragments OH and NO2 was investigated in real time. HNO3 was prepared either in a fluorescence cell at room temperature (LIF probing of OH) or rotationally cold in a molecular beam (probing of NO2 by three-photon ionization). A 2 1 A ′ lifetime of 60–80 fs could be obtained from the experimental results, indicating essentially barrierless dissociation. In addition, secondary dissociation of internally excited nascent fragments NO2  * leading to products NO(X 2 Π) and O(3 P) with a characteristic dissociation time of 2.3 ps was observed. This time is surprisingly long when compared with dissociation lifetimes of NO2 from the literature, obtained after direct photoexcitation. The discrepancy is explained by differences in the preparation conditions of the dissociative state of NO2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400000357
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of laser pulse width on absolute EUV-yield from Xe-clusters (2001)
    Springer
    The European physical journal 14 (2001), S. 331-335 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 52.38.Ph X-ray, γ-ray and particle generation – 52.50.Jm Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) – 36.40.Vz Optical properties of clusters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Using 50 fs ( ∼ 2×1018 W/cm2) and 2 ps ( ∼ 5×1016 W/cm2) pulses from a Ti:Sa multi-TW laser at 800 nm wavelength large Xe-clusters ( 105...106 atoms per cluster) have been excited. Absolute yield measurements of EUV-emission in a wavelength range between 10 nm and 15 nm in combination with cluster target variation were carried out. The ps-laser pulse has resulted in about 30% enhanced and spatially more uniform EUV-emission compared to fs-laser excitation. Circularly polarized laser light instead of linear polarization results in enhanced emission which is probably caused by electrons gaining higher energies by the polarization dependent optical field ionization process. An absolute emission efficiency at 13.4 nm of up to 0.8% in 2π sr and 2.2% bandwidth has been obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170200
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    Paper (German National Licenses)
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