Abstract
With a recording photoelectric Fabry-Perot spectrometer and an atomic-beam light source the hyperfine structure of the Mn I-resonance linesλ=4031 Å,λ=4033 Å,λ=4034 Å (3d 54s 2 a 6 S 5/2−3d 54s4p z 6 P 7/2,5/2,3/2 0)and of the inter-combination linesλ=5395 Å andλ=5433 Å (3d 54s 2 a 6 S 5/2−3d 54s4p z 8 P 7/2,5/2 0) was measured. Furthermore the resonance lines have been measured with a pulsed atomic-beam in absorption. In this case the quotient (I 0(ν)−I(ν))/I 0(ν) was recorded, whereI(ν)=I 0(ν) exp(−α(ν)d) is the observed intensity with absorption andI 0(ν) the intensity of the light source. From the hyperfine structure splitting the value of the electric quadrupole moment of Mn55 was derived to be:Q(Mn55)=+(0.35±0.05)·10−24 cm2.
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Herrn Professor Dr. H.Kopfermann danke ich vielmals für die Anregung zu dieser Arbeit und für sein förderndes Interesse an ihrem Fortgang.
Herrn Professor Dr. A.Steudel und Herrn Dr. G.Nöldeke danke ich für viele anregende Diskussionen und Hinweise.
Herrn Feinmechanikermeister E.Ehrbar danke ich für den Bau der Apparatur.
Der Deutschen Forschungsgemeinschaft sei für die Bereitstellung der benötigten Geräte gedankt.
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Walther, H. Das Kernquadrupolmoment des Mn55 . Z. Physik 170, 507–525 (1962). https://doi.org/10.1007/BF01378187
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DOI: https://doi.org/10.1007/BF01378187