Band structure of 78Kr

Hellmeister, H.P.; Kaup, U.; Keinonen, J.; Lieb, Klaus; Rascher, R.; Ballini, Rosângela; Delaunay, Jacques; Dumont, H.

doi:10.1016/0370-2693(79)90771-8

Cited by 48 publications

(12 citation statements)

References 15 publications

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“…1. The analysis of the R(D) decay functions was performed according to the methods described previously [3,12,13]. The feeding intensities on which the deduced lifetime of a state depends most crucially, were determined in art independent measurement at beam energies of 42, 45, 48 and 52MeV.…”

Section: Experimental Procedures and Resultsmentioning

confidence: 99%

“…In the present case, however, the energy and long lifetime of the 6 + state indicate that the mixing of the crossing bands is much stronger and/or the alignment occurs at the lower spin value U=6 +. The ratios of E2 strengths of the 8+46 + , 6+-,4 + and 2+-,0 + yrast transitions have been reported to be 1.3:1.5:1.0 in 7SKr [3] and S4Sr are plotted versus the rotational frequency co; in analogy to [20], it has been assumed that the 4.61 and 4.82 MeV states both have U=10 +. The similarity of the band structures in the isotones S4Sr and 82Kr is obvious.…”

Section: Inrettretation With the Cranked Shell Modelmentioning

confidence: 99%

“…Recent extensive studies of the level structures of the krypton, rubidium and strontium isotopes have revealed rapid changes of the quadrupole deformation as a function of neutron holes in the N=50 shell closure at the isotopes *6Kr, 87Rb and 88Sr [1][2][3]. In the even krypton isotopes 74-80, level energies and v-transition strengths of the ground state, gamma and octupole bands have been established up to rather high spin values (I~14+).…”

Section: Introductionmentioning

confidence: 97%

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Recoil distance lifetime measurements in82Kr

et al. 1982

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+4The lifetimes z = 124 _+ 12, 6 _ 2 and 3 80 • 100 ps of the E~ (U) = 3.46(8 +), 2.92(6 +) and 3.04(6-) MeV states, respectively, populated by the reaction 76Ge(12C, ~2n) were measured with the recoil distance method. In addition upper lifetime limits were obtained for nine states. The measured lifetimes and energies indicate a band crossing at about U = 8 +, probably arising from the alignment of two g9/2 neutrons. For the 3.04 MeV 6-state as a second member of a band built on the 2.65 MeV 4-state, the measured lifetime points to a two-quasiparticle configuration. The positive-parity states have been discussed in the frame of the interacting boson approximation, nuclear field theory and the cranked shell model.Nuclear Reactions: 76Ge(12C,~2n), E=42-52MeV; measured Er, ty, recoil distance Doppler shift. 82Kr levels deduced z. Enriched targets.

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Section: Experimental Procedures and Resultsmentioning

confidence: 99%

Section: Inrettretation With the Cranked Shell Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Recoil distance lifetime measurements in82Kr

et al. 1982

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“…The even-even isotopes of Krypton (Z = 36) have been investigated by means of in-beam gamma-ray spectroscopy in the last fewyears [1][2][3][4][5]13]. In this letter we will discuss in detail collective states of the transition nuclei v'*-82Kr which are situated in the shell 28_<N_<50.…”

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confidence: 99%

Description of even-even Krypton isotopes by the Interacting Boson Approximation

Kaup

Gelberg

1979

Z Physik A

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“…Hellmeister, Keinonen (1979) studied the energy levels and electric transition probability and compared with experimental data.., Meyer et al (1984) investigated the nuclear structure of the 82 Kr isotope , using in-beam spectroscopy studies and compare the experimental data with the results of IBM-2.…”

Section: Introductionmentioning

confidence: 99%

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2013

GJPNS

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The Interacting Boson Model is applied to the even Kr 90 76− isotopes. Excitation energies, electromagnetic transition strengths, quadrupole and magnetic dipole moments, and δ (E2/M1) multiple mixing ratios, monopole transitions and mixed symmetry states have been described systematically. It is seen that the properties of low-lying levels in these isotopes, for which the comparison between experiment and IBM-2 calculations is possible, can be satisfactorily characterized by the Interacting Boson Model-2 (IBM-2).

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Band structure of 78Kr

Cited by 48 publications

References 15 publications

Recoil distance lifetime measurements in82Kr

Recoil distance lifetime measurements in82Kr

Description of even-even Krypton isotopes by the Interacting Boson Approximation

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