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  • 1
    Electronic Resource
    Electronic Resource
    Absolute X-ray yields of light muonic atoms (1999)
    Springer
    Hyperfine interactions 119 (1999), S. 71-76 
    Details
    ISSN: 1572-9540
    Keywords: exotic atom ; cascade ; X-ray spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The intensities of X-rays from muonic atoms formed in low pressure Ne, O2, N2, He, and H2 gas was measured. For the pressure chosen external electron refilling can be neglected. Absolute yields were extracted and compared to results of cascade calculations. Knowledge of the yields of the circular X-ray transitions allows an in situ efficiency calibration of X-ray detectors down to energies of 1.5 keV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012654518455
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Kinetic energies of exotic H atoms at formation and cascade (1999)
    Springer
    Hyperfine interactions 119 (1999), S. 3-10 
    Details
    ISSN: 1572-9540
    Keywords: exotic atom ; cascade
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The complex balance of processes occurring at the cascade of exotic H-atoms is usually described by the so-called standard cascade model, but this model neglects variations of the kinetic energy T of the exotic atom during the cascade which are crucial for the analysis of several important experiments. New experimental results on T µp at H2 pressures between 0.063 and 4 hPa demonstrate the importance of acceleration due to Coulomb de-excitation processes at highly excited µp levels n 〉 9. The data at the lowest density are sensitive to the initial values of the kinetic energy and n-levels at the moment of atomic capture. From the measured low-energy tail of the T µp-distribution it can be concluded that a considerable part of the µp(2s) atoms is metastable at pressures of a few hPa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012651231659
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Molecular effects in light muonic atoms (1999)
    Springer
    Hyperfine interactions 119 (1999), S. 83-88 
    Details
    ISSN: 1572-9540
    Keywords: muonic atoms ; cascades ; molecular effects ; X-ray spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Muonic X-ray cascades in B, C, N, O and Ne following muonic atom formation in B2H6, CH4, C2H6, C4H10, N2, O2 and Ne were investigated. The densities of the different target gases were low enough to prevent any contact of the atom or molecule on which the formation takes place with surrounding atoms or molecules during the cascade. Molecular effects of the capturing molecule are clearly seen. The observed transition yields could be reproduced by variation of only two parameters in a cascade calculation: the number of initially available electrons and the muon angular momentum distribution at the starting point of the calculation. By varying the number of electrons, the molecular effects could be described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012658619364
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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