Levels of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Ge</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>68</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>excited by the (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mo>,</mml:mo><mml:mi> </mml:mi><mml:mi>t</mml:mi></mml:math>) reaction

Guilbault, F.; Ardouin, D.; Tamisier, R.; Avignon, P.; Vergnes, M.; Rotbard, G.; Berrier, G.; Seltz, R.

doi:10.1103/physrevc.15.894

Cited by 23 publications

(4 citation statements)

References 11 publications

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“…Raman et al [24] deduce |Q| = 1.20(9) from the measured B(E2; 0 + 1 → 2 + 1 ), closer to the FPD6(4) result. Early shell model calculations by de Vries et al [19] and Guilbault et al [25] were similar to ours but less successful in reproducing the experimental data. This may have been due to the use of a simpler interaction, nucleon configuration truncations, and/or the extension to higher excitation energies.…”

Section: Resultssupporting

confidence: 72%

Nuclear structure of the first2+state in radioactiveGe68based ongfactor and lifetime measur

et al. 2005

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The g factor of the 2 + 1 state of radioactive 68 Ge (T 1/2 = 270 d) has been measured for the first time. The technique used is based on α transfer from a 12 C target to energetic 64 Zn projectiles that incorporates the favorable conditions of inverse kinematics as in projectile Coulomb excitation. It also includes features of the transient field technique applied to nuclear spin precessions. Because the reaction cross section is large the method is a significant alternative to Coulomb excitation of low-intensity radioactive ion beams. In addition, we have remeasured the lifetimes of several excited states using the Doppler-shift-attenuation method. In these measurements, the inherent focusing nature of the reaction in the forward direction was optimally exploited for the resulting fast-moving nuclei. The g factor value obtained, g(2 + 1 ) = +0.55 (14), is in good agreement with the collective value, g = Z/A = 0.47, and is also consistent with the precise data of the stable even-A Ge isotopes. The newly determined lifetimes partially agree with those quoted in the literature and are of comparable accuracy. The deduced B(E2) values and the new measured g factor are well reproduced by some fp shell model calculations in which excitations from the f 7/2 orbital play an important role.

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Section: Resultssupporting

confidence: 72%

Nuclear structure of the first2+state in radioactiveGe68based ongfactor and lifetime measur

et al. 2005

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“…Three experimental levels around 1.2 MeV are rather difficult to explain, if they have negative parity. The level structure of 68Ge became clear recently through the V~ 68Ge work [52] and the study of the beta decay of 6SAs [53]. The results of the present calculation are compared with those of the two works in Figure 6.…”

Section: The Ga Isotopesmentioning

confidence: 82%

“…A tentative assignment of J~=6 + was given to a level observed at 3.70MeV [54]. Guilbault et al [52] did not excited this level. Instead, they gave a tentative assignment of J'=6 + to a level observed at 4.46 MeV.…”

Section: The Ga Isotopesmentioning

confidence: 99%

Calculations of the energy spectra of Zn, Ga, and Ge isotopes by the shell model

1979

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The effective Hamiltonian which was determined empirically by Koops and Glaudemans is tested in shell model calculations for the nuclei in the full(1 P3/2,0]5/2, 1 Pl/J space. The resulting energy spectra are compared with the experimental spectra and results of previous calculations. The overall agreement with experiment is as satisfactory for these nuclei as for the Ni and Cu isotopes, by which the Hamiltonian was determined. It is noticed that the spectra of 67Zn and 67'69Ga calculated in this work are similar to those provided by the Alaga model.

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“…Both the coexistence of a shape transition from spherical to weakly deformed and a coexistence of different types of deformation are expected in these nuclei [23 -25]. Qualitatively these features can be explained with the help of the Nilsson model calculation [26], shell model calculation [27], constrained Hartree-Fock calculation [28], twoquasiparticle plus-rotor calculation [13],and IBA model calculation [13].…”

Section: Introductionmentioning

confidence: 99%

Negative parity states and octupole collectivity of even Ge isotopes

1993

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The negative parity energy levels of the even-even Ge isotopes with mass number between 64 and 76 are studied systematically by enlarging the model space of the interacting boson approximation model to include both collective and noncollective basis states. The basis states consist of N&-1 sd-boson plus a f-boson configuration and Ns-1 sd boson plus a fermion pair configuration. The fermions are allowed to occupy the f,iz and g9/p single-particle orbitals, respectively. It was found that the negative parity energy levels of Ge nuclei can be described reasonably well. The intensities of the collective configuration in 3 states increase when going from nucleus Ge to nucleus ' Ge and decrease from nucleus Ge to nucleus Ge. The B(E3;3&~0&+) values are calculated and compared with the available observed data.

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Levels ofGe68excited by the (p, t) reaction

Cited by 23 publications

References 11 publications

Nuclear structure of the first2+state in radioactiveGe68based ongfactor and lifetime measur

Nuclear structure of the first2+state in radioactiveGe68based ongfactor and lifetime measur

Calculations of the energy spectra of Zn, Ga, and Ge isotopes by the shell model

Negative parity states and octupole collectivity of even Ge isotopes

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