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Two-phonon 1- state in Sn-112 observed in resonant photon scattering

I. Pysmenetska
(
- Darmstadt, Tech. Hochsch. and
- Stuttgart U.
)
,
S. Walter
(
- Darmstadt, Tech. Hochsch. and
- Stuttgart U.
)
,
J. Enders
(
- Darmstadt, Tech. Hochsch. and
- Stuttgart U.
)
,
H. von Garrel
(
- Darmstadt, Tech. Hochsch. and
- Stuttgart U.
)
,
O. Karg
(
- Darmstadt, Tech. Hochsch. and
- Stuttgart U.
)

Dec, 2005

10 pages

Published in:

Phys.Rev.C 73 (2006) 017302

e-Print:

nucl-ex/0512013 [nucl-ex]

DOI:

10.1103/PhysRevC.73.017302

Report number:

IKDA-05-19-SFB-634-05-19

View in:

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Abstract:

Results of a photon scattering experiment on 112Sn using bremsstrahlung with an endpoint energy of E_0 = 3.8 MeV are reported. A J = 1 state at E_x = 3434(1) keV has been excited. Its decay width into the ground state amounts to Gamma_0 = 151(17) meV, making it a candidate for a [2+ x 3-]1- two-phonon state. The results for 112Sn are compared with quasiparticle-phonon model calculations as well as the systematics of the lowest-lying 1- states established in other even-mass tin isotopes. Contrary to findings in the heavier stable even-mass Sn isotopes, no 2+ states between 2 and 3.5 MeV excitation energy have been detected in the present experiment.

27.60.+j
25.20.Dc
23.20.-g
21.10.-k

References(27)

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