Precision mass difference measurements in light rubidium and krypton isotopes utilizing beta-endpoints

Moltz, D. M.; Toth, K.S.; Avignone, F. T.; Noma, Hiroshi; Ritchie, B. G.; Kern, B.D.

doi:10.1016/0370-2693(82)90099-5

Cited by 19 publications

(3 citation statements)

References 14 publications

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“…Data of beta decay to 76Kr suggest a negative parity [37,38]. If we interpret the first two excited levels at 101 and 246 keV as the first members of a rotational band in analogy to V4Br and 76Br we deduce the slightly higher inertia parameter A =24.6 keV.…”

Section: Discussionmentioning

confidence: 96%

“…This is the only long lived one (T1/2 = 39.1 s) observed in fl decay experiments [24,31,35,37,38] and is expected to be the ground state.…”

Section: Proposed Decay Scheme Of V6mrbmentioning

confidence: 90%

“…In an atomic beam experiment a spin of I= 1 [35], magnetic moment of /z = -0.376 (9) n.m., and a spectroscopic quadrupole moment of Qs = 0.38 (15) b were determined [36]. Beta decay data suggest a negative parity [37,38]. In a recent publication [22] on 75Kr new 7 lines have been observed and assigned to 76Rb, but have not been ordered into a level scheme.…”

Section: Introductionmentioning

confidence: 99%

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Identification of a 3.2?s isomer in76Rb

Hofmann

Zychor

Heßberger

et al. 1986

Z. Physik A - Atomic Nuclei

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Fusion evaporation reactions were investigated to search for short lived isomeric states of nuclei near the proton drip line. Gamma spectra were measured, both singles and in delayed coincidence with evaporation residues implanted into a silicon detector after a velocity separation. A short lived activity was measured in the 4~176 ~ 8~ reaction at excitation energies between 55 and 79 MeV. A half-life of 3.20(10) gs was determined from delayed coincidences between evaporation residues and gamma rays. At E*= 55 MeV the cross section is 9 mb. The activity was assigned to an isomeric state in 76Rb by investigation of excitation functions. The isomer decays by emission of four gamma rays with energies of 70.55(5), 101.30(4), 145.11 (5), and 246.32(10) keV. A first level scheme is proposed assigning to the isomeric state an energy of 316.94(7) keV above the ground state. The isomer decaying into the low spin 1 (-) ground state band is explained from systematics as a band head of a high spin (4 +) (7"cg9/2, vg9/2) structure.A high hindrance factor of 3 x 106 for E1 radiation compared to a single particle transition is due possibly to a change of the core particle structure in the transition.

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Section: Discussionmentioning

confidence: 96%

“…This is the only long lived one (T1/2 = 39.1 s) observed in fl decay experiments [24,31,35,37,38] and is expected to be the ground state.…”

Section: Proposed Decay Scheme Of V6mrbmentioning

confidence: 90%