Magnetic moments, lifetimes and γ-decay of the lowest 6− states in 64Cu and 66Cu

Bleck, J.; Butt, R.; Lindenberger, K. H.; Ribbe, Wolfgang; Zeitz, W.‐D.

doi:10.1016/0375-9474(72)91033-0

Cited by 27 publications

(5 citation statements)

References 16 publications

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“…If the single quasiparticle operators are additive within 0.2 to 0.3 n.m., as is suggested [7] from the moments of the 6-isomers in 64Cu and 66Cu, this may be taken as an indication that both the isomeric states in 62Cu are mixed states even in the quasi-particle scheme.…”

Section: The Magnetic Moments Of the Isomeric Statesmentioning

confidence: 94%

“…The Ge (Li) detectors were used to obtain, by means of the electronics described in Ref. [7], the energy spectra of the v-radiation during or delayed to the beam pulses, and energy spectra of those v-rays which were in coincidence, during the beam pulses or 12 to 115 nsec afterwards, with one of the v-ray seen in the delayed spectrum.…”

Section: The Experimental Arrangementmentioning

confidence: 99%

“…The corresponding data of the upper level have been published in an abstract [4] only, and no further information was available. The present study, which follows a similar investigation [7] of 64Cu and 66Cn, was aimed (i) at clearing the discrepancies connected with the 40.84 keV level, and (ii) at establishing independently the properties of the 390.19 keV level. Furthermore, the simple interpretation of the lifetimes and the magnetic moments of the 6-states of 64Cu and 66Cu in terms of the properties of the neighbouring odd mass nuclei [7] has raised the question, whether a similar explanation holds for lower spin states like those of 62Cu.…”

Section: Introductionmentioning

confidence: 99%

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Lifetimes and magnetic moments of two states in62Cu

et al. 1973

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The lifetimes and the magnetic moments of the two excited 62Cu states at 40.84 and 390.19 keV are investigated by time differential perturbed angular distribution measurements of the delayed y-rays following the nuclear reactions 61Ni(d, n) and 62Ni (p, n). The results are: r=6.7_ 0.5 nsec,/t= 1.32_ 0.03 n. m. for the 2 + state at 40.84 keV, and T= 16.0_ 0.3 nsec,/t=2.00+ 0.01 n. m. for the 3 + state at 390.19 keV.

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Section: The Magnetic Moments Of the Isomeric Statesmentioning

confidence: 94%

Section: The Experimental Arrangementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lifetimes and magnetic moments of two states in62Cu

et al. 1973

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“…In order to include systematic errors, mainly due to the distribution of the magnetic field over the beam spot, we have measured the Larmor precession under identical conditions for the 66 Cu isotope, using as target an annealed copper host. The R(t) function of the J π = 6 − isomer having a known g factor of g = +0.173(2) [24] has been done and B 0 = 0.630(12) T was extracted for the applied magnetic field. Both crystals have nonperturbative cubic structures, namely Centered Face Cubic for Cu and Centered Cubic for Mo.…”

Section: Experimental Measurementsmentioning

confidence: 99%

Magnetic moment of the 11/2− isomeric state in Mo99 and neutron spin g

et al. 2021

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The gyromagnetic factor of the low-lying Ex = 684.10(19) keV isomeric state of the nucleus 99 Mo was measured using the Time Dependent Perturbed Angular Distribution technique. This level is assigned a spin and parity of J π = 11/2 − , with a half-life of T 1/2 = 742(13) ns. The state of interest was populated and spin-aligned via a single-neutron transfer on an highly enriched 98 Mo target. A magnetic moment µexp. = −0.627(20)µN was obtained. This result is far from the Schmidt value expected for a pure single-particle νh 11/2 state. A comparison of experimental spectroscopic properties of this nucleus is made with results of multi-shell Interacting Boson-Fermion Model (IBFM-1) calculations. In this approach, the J π = 11/2 − isomeric state in 99 Mo has a pure νh 11/2 configuration. Its magnetic moment, as well as that of other two excited states could be reasonably well reproduced by reducing the free neutron spin g factor with a quenching factor of 0.45. This low value is not appropriate only for this case, similar values for the quenching factor being also required in order to describe magnetic moments in other nuclei from the same mass region.

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“…The last spectroscopic studies of the nucleus date back to 1970's and were carried out using light ion reactions along with modest detection setups, typically based on a small number of NaI(Tl) and/or Ge(Li) detectors. These early efforts by Chan et al [4], Green et al [5] and Bleck et al [6] could identify a limited excitation scheme of the nucleus upto a level energy of E x ∼ 4 MeV, with no or tentative spin-parity assignments for most of the states. A probe into the excitations of 64 Cu and the angular momentum generation mechanism therein, using the contemporary spectroscopy tools, is thus warranted.…”

Section: Introductionmentioning

confidence: 99%

Single-particle excitations in the level structure of Cu64

et al. 2018

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Excited states of the 64 Cu (Z = 29, N = 35) nucleus have been probed using heavy-ion induced fusion evaporation reaction and an array of Compton suppressed Clovers as detection system for the emitted γ rays. More than 50 new transitions have been identified and the level scheme of the nucleus has been established upto an excitation energy Ex ∼ 6 MeV and spin ∼ 10. The experimental results have been compared with those from large basis shell model calculations that facilitated an understanding of the single particle configurations underlying the level structure of the nucleus.

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Magnetic moments, lifetimes and γ-decay of the lowest 6− states in 64Cu and 66Cu

Cited by 27 publications

References 16 publications

Lifetimes and magnetic moments of two states in62Cu

Lifetimes and magnetic moments of two states in62Cu

Magnetic moment of the 11/2− isomeric state in Mo99 and neutron spin g

Single-particle excitations in the level structure of Cu64

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