The low temperature quadrupole orientation of103Ru in ruthenium |
| |
Authors: | V R Green N J Stone |
| |
Institution: | (1) Mullard Cryomagnetic Laboratory, Clarendon Laboratory, University of Oxford, Parks Road, OX1 3PU Oxford, UK;(2) Present address: SERC Daresbury Laboratory, N.S.F., WA4 4AD Warrington, UK |
| |
Abstract: | The quadrupole frequencyv
Q
=e
2
qQ/h of103Ru (Z=44,N=59) in a ruthenium single crystal has been measured using the technique of low temperature quadrupole orientation to bev
Q
(103RuRu)=−14.7(5) MHz. Temperatures below 2 mK were reached in this experiment using a PrNi5 demagnetization stage attached to a3He−4He dilution refrigerator. Using the measured magnitude of the RuRu electric field gradient (EFG) at low temperatures |eq(RuRu)|=1.02(3)×1017 V.cm−2 1] and adopting the sign ofeq(RuRu) to be negative from systematics, this result yields a value for the ground-state electric quadrupole moment of103Ru ofQ(103Ru)=+0.59(2) b. This moment may be interpreted using the weak coupling model of de-Shalit 2]. A Korringa constant for103RuRu ofC
K=39(6) Ks was measured in this experiment. Taking advantage of a small iridium contamination of the ruthenium single crystal,
the quadrupole moment of the192Ir ground state was determined to beQ(192Ir)=+2.12(25) b. The sign of the IrRu electric field gradient was found to be negative as a result of this work. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|