ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Angular distributions have been measured forγ-rays emitted following the decays of97, 103, 105Ru oriented in an iron matrix at temperatures down to 2.8mK. From the temperature dependence of theγ-anisotropies the magnetic hyperfine splitting frequenciesν M =|gμ N B HF/h| of97, 103, 105RuFe were found to be 110(7), 57(15) and 80 −50 +17 MHz, respectively. With the known hyperfine fieldB HF=−489.6(4.0) kG the nuclearg-factors are derived as ∣g(97Ru;j π=5/2+)∣=0.29(2), ∣g(103Ru;j π=3/2+)∣=0.15(4) and ∣g(105Ru;j π=3/2+)∣=0.21 -0.13 +0.05 . The analysis for103RuFe has been performed with the assumption ofj π=3/2+ and 5/2+ for the ground state of103Ru. Taking into account experimentally knowng-factors of 3/2+ and 5/2+ states in this mass region, our data strongly favour the assignmentj π=3/2+ for the103Ru ground state.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01441279
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