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Scalar and quadrupolar intensity contributions in two-photon hyperfine structure transitions in europium (1992)

Kronfeldt, H. -D. ; Loa, I.

Springer

The European physical journal 24 (1992), S. 211-214

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ISSN: 1434-6079

Keywords: 32.30.J ; 32.70.J

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract Two-photon transitions from the Eu I ground state 4f 7 6s 2 a 8 S 7/2 to odd levels with alsoJ=7/2 in the energy range of 34,000 – 36,700 cm−1 were analysed due to their scalar and quadrupolar contributions. Their ratioR (g, e) were determined experimentally. In most cases the quadrupole contributions are dominant, i.e. 0〈R (g, e) exp 〈20·10−3. In the two-photon transition to the level 4f 7 5d 2 8 F 7/2 the ratio is remarkably strong:R (g, e) exp =134 (4)·10−3. A theoretical estimation ofR (g, e) is not yet satisfying, due to strong configuration mixing in Eu.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01425744

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