Coulomb excitation of neutron-rich Cd isotopes at REX-ISOLDE

The Advanced Time-Delayed βγ γ (t) method was used to measure lifetimes of selected high-spin states in 122 Cd populated from β − decay of the J π = (9 − ) isomer in 122 Ag. From the γ γ coincidences, a new energy level was established at 2616.6 keV with a suggested spin-parity assignment of 8 − . Lifetimes were determined for the high-spin states at 2616.6 and 2502.7 keV as T 1/2 = 1.35(29) ns and 0.24(6) ns, respectively. The transition rates for γ rays de-exciting the 7 − states in the N = 74 isotones of 122 Cd, 124 Sn, and 126 Te were found to be very similar.

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Electric quadrupole moments of the21+states inCd100,102
Ekström¹,
Cederkäll²,
DiJulio³
et al. 2009
Phys. Rev. C
41
9
45
0
View full text Add to dashboard Cite

Using the REX-ISOLDE facility at CERN the Coulomb excitation cross sections for the 0 + gs → 2 + 1 transition in the β-unstable isotopes 100,102,104 Cd have been measured for the first time. Two different targets were used, which allows for the first extraction of the static electric quadrupole moments Q(2 + 1 ) in 102,104 Cd. In addition to the B(E2) values in 102,104 Cd, a first experimental limit for the B(E2) value in 100 Cd is presented. The data was analyzed using the maximum likelihood method. The provided probability distributions impose a test for theoretical predictions of the static and dynamic moments. The data are interpreted within the shell-model using realistic matrix elements obtained from a G-matrix renormalized CD-Bonn interaction. In view of recent results for the light Sn isotopes the data are discussed in the context of a renormalization of the neutron effective charge. This study is the first to use the reorientation effect for post-accelerated short-lived radioactive isotopes to simultaneously determine the B(E2) and the Q(2 + 1 ) values.

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Coulomb excitation of neutron-rich Cd isotopes at REX-ISOLDE

Cited by 3 publications

References 4 publications

New results from MINIBALL

New results from MINIBALL

Lifetime measurements of the negative-parity7−and8−states in
Smith
¹
,
Mach
²
,
Penttilä
³

et al. 2008
Phys. Rev. C
17
0
3
0
View full text Add to dashboard Cite

Electric quadrupole moments of the21+states inCd100,102
Ekström¹,
Cederkäll²,
DiJulio³
et al. 2009
Phys. Rev. C
41
9
45
0
View full text Add to dashboard Cite

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Coulomb excitation of neutron-rich Cd isotopes at REX-ISOLDE

Cited by 3 publications

References 4 publications

New results from MINIBALL

New results from MINIBALL

Lifetime measurements of the negative-parity7−and8−states inSmith1, Mach2, Penttilä3 et al. 2008Phys. Rev. C17030View full textAdd to dashboardCite

Electric quadrupole moments of the21+states inCd100,102Ekström1, Cederkäll2, DiJulio3 et al. 2009Phys. Rev. C419450View full textAdd to dashboardCite

Contact Info

Product

Resources

About

Lifetime measurements of the negative-parity7−and8−states in
Smith
¹
,
Mach
²
,
Penttilä
³

et al. 2008
Phys. Rev. C
17
0
3
0
View full text Add to dashboard Cite

Electric quadrupole moments of the21+states inCd100,102
Ekström¹,
Cederkäll²,
DiJulio³
et al. 2009
Phys. Rev. C
41
9
45
0
View full text Add to dashboard Cite