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21.
Tanigaki M. Ohkubo Y. Taniguchi A. Kawase Y. Goto J. Sasanuma T. 《Hyperfine Interactions》2001,136(3-8):391-396
A 140La(I
π=3−, T
1/2=40.3 h)-doped layer has been produced in CaB6 by means of radioactive isotope (RI) beam technique: 140Cs(I
π=1−, T
1/2=63.7 s) was implanted into CaB6 and the radioactive equilibrium of 140Ba–140La was achieved. The concentration of La in CaB6 was La/Ca ∼0.001. Obtained TDPAC spectra of the 2083 keV level of 140Ce (I
π=4+, T
1/2=3.4 ns, μ=+4.35±0.10 μ
N
) followed by the β decay of 140La showed the existence of hyperfine magnetic fields: B
hyp=−15.0±0.5 T and −1.00±0.15 T.
This revised version was published online in September 2006 with corrections to the Cover Date. 相似文献
22.
Akselrod Z. Z. Filossofov D. V. Kochetov O. I. Korolev N. A. Lebedev N. A. Milanov M. Novgorodov A. F. Shirani E. N. Timkin V. V. Velichkov A. I. 《Hyperfine Interactions》2001,136(3-8):705-710
111Cd–PAC measurements have been made using the high specific activity of 111In in the methanol–water mixtures of various concentrations at the room temperature. These experiments revealed that the perturbation
factors 〈A
2
G
2〉 (integrated over two mean lives τN) do not follow the dependence of the macroscopic viscosity η. The observed dynamic character of the PAC spectra in ice is
explained by the mobility of orientational and ionic defects. The activation energy for the diffusion process was determined
to be E
a
=0.35(1) eV.
This revised version was published online in September 2006 with corrections to the Cover Date. 相似文献