Abstract
The techniques of nuclear orientation and nuclear magnetic resonance on oriented nuclei were applied to after recoil implantation into Fe and Ni. Combining the results of nuclear orientation and nuclear magnetic resonance on oriented nuclei, which are sensitive to the magnetic moment and the g factor, respectively, the spin of was determined to be I=1, in contradiction to I=2 adopted previously. In addition, the splitting of the nuclear magnetic resonance on oriented nuclei resonance into two subresonances due to quadrupole interaction was observed, which proves again I=1.
The magnetic and electric hyperfine splitting frequencies, =‖g and =qQ/h, were determined for , =315.8(3) MHz and for , =104.8(1) MHz, =-1.98(4) MHz. Taking into account a 3% uncertainty arising from hyperfine anomalies, the magnetic moment of is deduced to be ‖μ‖=0.302(10) .
With the electric field gradients of Ir in Fe and Ni, recalculated to be -0.283(6)× V/ and -0.151(4)× V/, respectively, the spectroscopic quadrupole moment of is deduced to be +0.543(8) b. The β decay of to the 2214 keV level in takes place to about 88% with tensor rank 0. Assuming the validity of the ξ approximation, the ratio of the remaining matrix elements is ‖V/Y‖=5.3(1.5). Our measurements show further that nuclear orientation experiments, from which γ-decay properties in have been derived, will have to be reinterpreted. In addition, the spectroscopic quadrupole moments of and were redetermined to be +2.28(6) b and +0.339(12) b, respectively.
- Received 28 February 1985
DOI:https://doi.org/10.1103/PhysRevC.32.582
©1985 American Physical Society