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  • 1
    Electronic Resource
    Electronic Resource
    On the effect of backscattering of γ quanta and statistics in positron-annihilation lifetime measurements (1981)
    Springer
    Applied physics 26 (1981), S. 255-259 
    Details
    ISSN: 1432-0630
    Keywords: 29 ; 78.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The contribution of backscattered, 1.27-MeVγ quanta to the coincidence counts in positron-annihilation lifetime measurements has been investigated. Depending on the energy window settings and geometry, as much as 20% of the coincidence counts was found to arise from backscattered events. Computer analysis of such spectra leads to erroneous results. Analysis of computer-generated lifetime spectra shows that good statistics is more important than good resolution power for the quality of the analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00617847
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