Decays of 185m + gHg: Low-spin levels of 185Au as a test of nuclear models

Decay of 185Tl, 185m+gHg, 189m+gPb and energy location of the 13/2+ isomeric states in 185Hg, 189Pb, 193Po and 197Rn

“…Two of them were unambiguously identified as an E3 65.3(1) keV and an M 1 + E2 26.1(1) keV isomeric transitions [24]. A slightly smaller energy, 26.02(10) keV, has been found for the second transition in our analysis of the electron spectrum (table 3).…”

“…In addition to this, some transition energies belonging to 185 Au had been precisely determined using the same spectrograph but without high voltage applied to the source [24], conversion electron lines of two of them, also observed in the spectrum, served the internal energy calibration: namely L III , M III conversion electron lines of the 17.17(3) keV transition and L I , L II , L III lines of the 35.75(5) keV transition. The electron energies, E electron , electron intensities, I e , transition multipolarities and total transition intensities, I total , obtained for six low-energy transitions (four in Au and two in Hg) are listed in table 3.…”

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“…The values not connected by lines correspond to isomeric states. 183,185 Au, the h 9/2 proton is decoupled from the core under the Coriolis force [71][72][73].…”

Very converted transitions and particle-core coupling in neutron-deficient odd-mass au isotopes

“…Lab., EG and G Idaho, Inc., P.O. Box 1625, Idaho Falls, ID 83415, USA as anomalous M 1 by Bourgeois et al [6] are, in fact, consistent with E0 + M 1 + E2 mixed multipoles.…”

“…The systematic pattern of transitions with E0 components in ~85,1aTAu bears a close resemblance to E0 and E0 admixed transitions in the neighboring doubly-even Pt and Hg isotopes which are considered cores for certain configurations in the odd-mass Au isotopes. Bourgeois et al, however, have suggested [6] that the occurrence of c~K(expt ) >~K(M1) might be due to abnormalities in the M1 internal-conversion process. The data presented below will show that transitions in a85Au designated * Present address: Dynetics Inc., P.O.…”