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  • 1990-1994  (2)
  • 33.00  (1)
  • 33.80.Wz  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Cross section of supercooled238UF6 in multiphoton absorption induced by 16 micrometer Raman-laser radiation (1994)
    Springer
    Applied physics 59 (1994), S. 475-477 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 33.00
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Measurements of multiphoton absorption of 16 µm Raman-laser radiation in supercooled238UF6 at 90 K were performed by using a pulsed Laval nozzle with an optical path length of 50 cm. The laser fluence was varied between 50 and 500 mJ/cm2 for four frequencies in the range from 625 to 629 cm−1. The energy absorbed by238UF6 molecules was investigated as a function of laser frequency or fluence, and highly accurate results were obtained with the use of the nozzle whose optical path length is much greater than that of nozzles used before. The results indicated that the absorption cross section at the peak absorption frequency (627.8cm−1) was proportional to the −1/3 power of the fluence.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081071
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    IR multiple-photon dissociation by a focused uniform beam (1991)
    Springer
    Applied physics 53 (1991), S. 268-270 
    Details
    ISSN: 1432-0649
    Keywords: 82.20.Wt ; 33.80.Wz ; 42.60.Kg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An improved analytical method is presented in which the reaction yield in the IR multiple-photon dissociation by a focused uniform beam is expressed in a generalized form as a function of fluence. The analytical solution is derived for a real focusing geometry by assuming the cumulative log-normal distribution (CLND) for the functional form of the dissociation probability vs. fluence. Also presented is a shortcut analytical method with simple and convenient algebraic expressions which approximate the exact analytical solution, thereby speeding up the analysis of experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357149
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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