Compilation of giant electric dipole resonances built on excited states

Schiller, A.; Thoennessen, M.

doi:10.1016/j.adt.2006.12.002

Cited by 52 publications

(55 citation statements)

References 128 publications

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“…This is based on the generalized Brink hypothesis [35], which states that any collective decay mode has the same properties whether it is built on the ground state or on excited states. The Brink hypothesis has been proven incorrect for nuclear reactions involving high temperatures and/or spins [36]. However, in the present work the reached spin range and temperature are rather low, so it is reasonable to assume that the Brink hypothesis holds, as demonstrated in Refs.…”

Section: Experimental Details and Data Analysismentioning

confidence: 61%

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the
Campo
¹
,
Garrote
²
,
Eriksen
³

et al. 2016
Phys. Rev. C

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Particle-γ coincidence data have been analyzed to obtain the nuclear level density and the γ -strength function of 64 Ni by means of the Oslo method. The level density found in this work is in very good agreement with known energy levels at low excitation energies as well as with data deduced from particle-evaporation measurements at excitation energies above E x ≈ 5.5 MeV. The experimental γ -strength function presents an enhancement at γ energies below E γ ≈ 3 MeV and possibly a resonancelike structure centered at E γ ≈ 9.2 MeV. The obtained nuclear level density and γ -strength function have been used to estimate the (n,γ ) cross section for the s-process branch-point nucleus 63 Ni, of particular interest for astrophysical calculations of elemental abundances.

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Section: Experimental Details and Data Analysismentioning

confidence: 61%

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the
Campo
¹
,
Garrote
²
,
Eriksen
³

et al. 2016
Phys. Rev. C

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show abstract

“…This assumption is proven to be incorrect for nuclear reactions involving high temperatures and/or spins, see for example Ref. [23]. However, in the present work, neither high-spin states nor high temperatures are reached (T f ∝ √ E f , and the populated spin range is centered within J ∼ 2 − 8h).…”

Section: Experimental Details and Data Analysismentioning

confidence: 66%

Transitionalγstrength in Cd isotopes

et al. 2013

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The level densities and γ-ray strength functions of 105,106,111,112 Cd have been extracted from particle-γ coincidence data using the Oslo method. The level densities are in very good agreement with known levels at low excitation energy. The γ-ray strength functions display no strong enhancement for low γ energies. However, more low-energy strength is apparent for 105,106 Cd than for 111,112 Cd. For γ energies above ≈ 4 MeV, there is evidence for some extra strength, similar to what has been previously observed for the Sn isotopes. The origin of this extra strength is unclear; it might be due to E1 and M1 transitions originating from neutron skin oscillations or the spin-flip resonance, respectively.

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“…[10] and references therein. However, in the present Oslo experiment, the temperature reached is low (T ∼ 1.5 MeV) and is assumed to be rather constant.…”

Section: Resultsmentioning

confidence: 99%

Fermi’s golden rule applied to theγdecay in the quasicontinuum ofTi46

et al. 2011

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Particle-γ coincidences from the 46 Ti(p, p γ) 46 Ti inelastic scattering reaction with 15-MeV protons are utilized to obtain γ-ray spectra as a function of excitation energy. The rich data set allows analysis of the coincidence data with various gates on excitation energy. For many independent data sets, this enables a simultaneous extraction of level density and radiative strength function (RSF). The results are consistent with one common level density. The data seem to exhibit a universal RSF as the deduced RSFs from different excitation energies show only small fluctuations provided that only excitation energies above 3 MeV are taken into account. If transitions to well-separated low-energy levels are included, the deduced RSF may change by a factor of 2 − 3, which might be expected because the involved Porter-Thomas fluctuations.

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Compilation of giant electric dipole resonances built on excited states

Cited by 52 publications

References 128 publications

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the
Campo
¹
,
Garrote
²
,
Eriksen
³

et al. 2016
Phys. Rev. C

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the
Campo
¹
,
Garrote
²
,
Eriksen
³

et al. 2016
Phys. Rev. C

Transitionalγstrength in Cd isotopes

Fermi’s golden rule applied to theγdecay in the quasicontinuum ofTi46

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Compilation of giant electric dipole resonances built on excited states

Cited by 52 publications

References 128 publications

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the Campo1, Garrote2, Eriksen3 et al. 2016Phys. Rev. C

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the Campo1, Garrote2, Eriksen3 et al. 2016Phys. Rev. C

Transitionalγstrength in Cd isotopes

Fermi’s golden rule applied to theγdecay in the quasicontinuum ofTi46

Contact Info

Product

Resources

About

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the
Campo
¹
,
Garrote
²
,
Eriksen
³

et al. 2016
Phys. Rev. C

Statistical γ -decay properties of Ni64 and deduced ( n,γ ) cross section of the
Campo
¹
,
Garrote
²
,
Eriksen
³

et al. 2016
Phys. Rev. C