Uniform properties of Jpi=1- two-phonon states in the semimagic even-even tin isotopes 116, 118, 120, 122, Sn-124 - INSPIRE

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Uniform properties of Jpi=1- two-phonon states in the semimagic even-even tin isotopes 116, 118, 120, 122, Sn-124

J. Bryssinck
(
- Gent U.
)
,
L. Govor
(
- Kurchatov Inst., Moscow
)
,
D. Belic
(
- Stuttgart U.
)
,
F. Bauwens
(
- Gent U.
)
,
O. Beck
(
- Stuttgart U.
)

Apr, 1999

4 pages

Published in:

Phys.Rev.C 59 (1999) 1930-1934

DOI:

10.1103/PhysRevC.59.1930

View in:

Nuclear Science References

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Abstract: (APS)

Systematic nuclear resonance fluorescence experiments including model-independent parity determinations provided clear evidence for strong, isolated E1 excitations at excitation energies of 3.3–3.5 MeV in the spherical, semimagic nuclei 116,118,120,122,124Sn. The corresponding Jπ=1− states are interpreted as two-phonon excitations (2+⊗3−). The excitation energies Ex(1−) and reduced excitation probabilities B(E1)↑ are nearly constant in the entire isotopic chain A=116–124. The results are described in the framework of quasiparticle-phonon-model calculations.

27.60.+j
23.20.Lv
21.10.Re
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