Ultrahigh resolution study of collective modes in Gd-158 - INSPIRE

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Ultrahigh resolution study of collective modes in Gd-158

H.G. Borner
(
- Laue-Langevin Inst.
)
,
M. Jentschel
(
- Laue-Langevin Inst.
)
,
N.V. Zamfir
(
- Yale U. and
- Clark U.
)
,
R.F. Casten
(
- Yale U.
)
,
M. Krticka
(
- Charles U.
)

May, 1999

7 pages

Published in:

Phys.Rev.C 59 (1999) 2432-2439

DOI:

10.1103/PhysRevC.59.2432

View in:

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Abstract: (APS)

Ultraprecise energies and absolute B(E2) values associated with K=0+ excitations in 158Gd, measured with the GRID technique, reveal significant information relating to the possible existence or absence of two-phonon vibrational excitations in deformed nuclei. A strong B(E2:K=02+→γ) is observed but reflects band mixing rather than a γγ mode. For the K=03+ band, measurement of precise γ transition energies shows that suggested existing placements of strong deexcitation transitions are incorrect and that there is, again, no evidence for γγ-phonon character in this band either. A weak B(E1:K=1−→K=01+) value is interpreted in terms of the microscopic structure of K=0− and K=1− excitations.

29.30.Kv
27.70.+q
23.20.Lv
23.20.Js

References(21)

Figures(0)

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