Test of a phenomenological model of odd-odd deformed nuclei: An ARC study of 176Lu

Hoff, R. W.; Casten, R. F.; Bergoffen, M.; Warner, D.D.

doi:10.1016/s0375-9474(85)90090-9

Cited by 10 publications

(28 citation statements)

References 14 publications

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“…The corresponding reduction of the level energies of Hoff et al [26] by 3.6 keV results in a remaining average systematic difFerence of 0.3 keV compared to the present level energies. This difFerence, which is comparable to the statistical uncertainties quoted by Hoff' et al [26], was corrected for as well so that the energies in Table III are 3.9 keV lower than given in Ref. [26].…”

Section: B Principlescontrasting

confidence: 47%

“…This difFerence, which is comparable to the statistical uncertainties quoted by Hoff' et al [26], was corrected for as well so that the energies in Table III are 3.9 keV lower than given in Ref. [26]. In comparing the present level energies with those of Balodis et al [19], a similar shift of AE= -3.645 keV must be considered due to the revised energy of the isomeric state.…”

Section: B Principlesmentioning

confidence: 69%

“…The ten strongest lines observed in the ARC measurements [26] spond to one third of the neutron energy spread. This result is significantly smaller than the value of 6289.5 keV given by Browne [41].…”

Section: B Principlesmentioning

confidence: 90%

“…Relevant information was also adopted from an investigation of primary gamma transitions following capture of epithermal neutrons [26]. The results from these average resonance capture (ARC) studies allowed the assignment of various levels in a we11-defined spin and parity window, i.e.…”

Section: Construction Of the Level Schemementioning

confidence: 99%

“…For the construction and interpretation of the level scheme, the data from the ARC measurement of HofT' et al [26] and from the (t, a) study of Dewberry et al [20] are repeatedly cited. For easier comparison, these data are compiled in Table III together with the present (d, p ) results and all the levels discussed in this work.…”

Section: B Principlesmentioning

confidence: 99%

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Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme of
Klay¹,
Käppeler²,
Beer³
et al. 1991
Phys. Rev. C

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Excited states of the deformed odd-odd nucleus ' Lu have been investigated by the following experiments: measurement of the ' 'Lu(n, y)' Lu reaction with high resolution crystal spectrometers and of the ' 'Lu(n, e )' Lu reaction with a double focusing magnet-spectrometer.In total, 509 gamma transitions could be identified in ' Lu, and multipolarities were determined for 228 of these transitions. Additionally, a measurement of y-y coincidences after neutron capture and an investigation of the Lu(d, p)' Lu transfer reaction were also performed. Information on the lifetimes of relevant levels was obtained by the technique of delayed coincidences, and, in one case, by the Doppler shift attenuation method. %'ith these results, a level scheme was established, comprising 97 energy levels connected by 270 gamma transitions. About 30 Nilsson configurations and corresponding rotational bands were identified. The comparison with model calculations indicates that the level scheme comprises all excited states with spins 1 & I (8 up to 900 keV. In particular, this scheme contains transitions that connect the I"=7 ground state with the 1 isomer via mediating levels at higher excitation energy. From this coupling, the excitation energy of the isomer was precisely defined to 122.855+0.009 keV. Accordingly, the neutron separation energy of ' Lu could be revised to 6287.91+0.15 keV. Based on the fact that more than 90% of the observed intensities could be placed in the level scheme, an isomeric ratio, 0.~( i)/o. ", =0.870+0.025, was deduced for the fractional population of the isomer by thermal neutron captures.

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Section: B Principlescontrasting

confidence: 47%

Section: B Principlesmentioning

confidence: 69%

Section: B Principlesmentioning

confidence: 90%

Section: Construction Of the Level Schemementioning

confidence: 99%

Section: B Principlesmentioning

confidence: 99%

See 3 more Smart Citations

Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme of
Klay¹,
Käppeler²,
Beer³
et al. 1991
Phys. Rev. C

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Microscopic description of vibrational degrees of freedom in odd-odd isotopes of Ho

Kvasil

Sheline

Nesterenko

et al. 1992

Z. Physik A - Hadrons and Nuclei

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The microscopic approach for the description of low-lying intrinsic states in deformed odd-odd nuclei is formulated as a generalization of the quasiparticle-phonon model. In comparison with other models used for deformed odd-odd nuclei, the approach proposed in this paper involves vibrational degrees of freedom of the doubly-even core, their coupling to quasiparticle degrees of freedom and the n-p interaction between the odd particles. Our model treats all of these modes of nuclear motion on the same microscopic footing. This proposed model is applied to calculate the energies and phononquasiparticle structure of the intrinsic states of the oddodd Ho isotopes with A = 160, 162, 164, 166 and 168. It is found that the low-lying intrinsic states in the odd-odd Ho isotopes have only small vibrational components. In general the vibrational states are fragmented over many intrinsic states.

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Description of low-lying states in odd-odd deformed nuclei taking account of the coupling with core rotations and vibrations I. Theory

1991

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Test of a phenomenological model of odd-odd deformed nuclei: An ARC study of 176Lu

Cited by 10 publications

References 14 publications

Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme of
Klay¹,
Käppeler²,
Beer³
et al. 1991
Phys. Rev. C

Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme of
Klay¹,
Käppeler²,
Beer³
et al. 1991
Phys. Rev. C

Microscopic description of vibrational degrees of freedom in odd-odd isotopes of Ho

Description of low-lying states in odd-odd deformed nuclei taking account of the coupling with core rotations and vibrations I. Theory

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Test of a phenomenological model of odd-odd deformed nuclei: An ARC study of 176Lu

Cited by 10 publications

References 14 publications

Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme ofKlay1, Käppeler2, Beer3 et al. 1991Phys. Rev. C

Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme ofKlay1, Käppeler2, Beer3 et al. 1991Phys. Rev. C

Microscopic description of vibrational degrees of freedom in odd-odd isotopes of Ho

Description of low-lying states in odd-odd deformed nuclei taking account of the coupling with core rotations and vibrations I. Theory

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Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme of
Klay¹,
Käppeler²,
Beer³
et al. 1991
Phys. Rev. C

Nuclear structure ofLu176and its astrophysical consequences. I. Level scheme of
Klay¹,
Käppeler²,
Beer³
et al. 1991
Phys. Rev. C