NUCLEAR ORIENTATION AND NMR-ON ON IMPLANTED IN-114M IN FE AND CO

Nuclear orientation and NMR/ON of114mIn implanted into Fe at an energy of 80 keV and dose of 3-5×1014 cm-2 is reported. The zero applied field resonance frequency v0=203.65(6) MHz is combined with the recently determined Bhf(In Fe) of 286.8(3) kG to yield μ(114mIn)=+4.658(14) nm. The nuclear spin-lattice relaxation time for114mIn in iron is measured to be 88(18) s at 18 mK and the applied field dependence of the NMR/ON resonance frequency gives the Knight shift for the system as -2.4(6)%. The absence of measurable nuclear orientation in similarly prepared114mIn Co sources is discussed. © 1979 North-Holland Publishing Company.