Digitale Medien
Springer
The European physical journal
240 (1970), S. 100-122
ISSN:
1434-601X
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract The magnetic hyperfine splitting of the 72.5 keV γ rays of145Nd was investigated in intermetallic compounds of Nd and in the paramagnetic salts Nd x Y 1-x Cl3·6H2O (withx=0.02 andx=0.05) at 4.2 K. With the magnetic hyperfine tensorA of Nd0.01Y0.99Cl3·6H2O known from EPR spectroscopy, the analysis of the unresolved magnetic hyperfine spectra yieldsI e =5/2 for the spin of the 72.5 keV state, in contradiction to a previous result. The multipolarity of the 72.5 keV γ transition was found to be essentiallyM1 with δ2=0.010±0.014, and the magnetic moment of the 72.5 keV state was determined as μ(5/2)=−0.319±0.004 nm. For various divalent and trivalent Nd compounds as well as for metallic Nd the isomer shift IS of the 72.5 keV γ line was measured. A value for the change of the mean square nuclear charge radius during the 72.5 keV γ transition of Δ〈r 2〉=+(1.9±0.9)·10−3fm2 was deduced using electron density differences from free-ion Hartree-Fock calculations.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01395626
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