Hyperfine interactions of light Ir, Re isotopes in iron

The technique of On-line Nuclear Orientation has been applied to light Ir and Re isotopes. Using both192IrFe and54MnNi thermometers, orientation as a function of temperature was measured over the range 10–100 mK. Pulsed implantation methods were used to obtain spectra with gamma transitions well identified and clear of contaminant activities. Magnetic moment/oriented state spin combinations were obtained for180,182,183Ir and for180,179Re. The results are briefly discussed.