Nuclear Magnetic Relaxation of Oligo- and Poly(α-methylstyrene)s in Dilute Solution

On Nuclear Magnetic Relaxation in Dilute Gases of Symmetric and Spherical Top Molecules

N u c l e a r m a g n e t i c re laxat ion in d i lute gases o f spher i ca l and s y m m e t r i c t op m o l e c u l e s is c o n s i d e r e d f r o m the po int of v iew of the k ine t i c theory o f transport and re laxat ion e q u a t ions b a s e d on the W a l d m a n n S n i d e r equat i on . T h e der ivat ion of the f o r m of the sp in-rotat ion H a m i l t o n i a n in the a b s e...

NUCLEAR MAGNETIC RESONANCE iN DILUTE ALLOYS

The experimental results concerning the electric field gradient and the local magnetic field around substitutional impurities in copper-based dilute alloys have been summarized. Comparing the experimental data with theoretical models we have come to the conclusion that only the first-order quadrupole wipe-out number characteristic of the asymptotic charge density oscillation around the impuriti...

Electron transport and energy relaxation in dilute magnetic alloys

We consider the effect of the Ruderman-Kittel-Kasuya-Yosida~RKKY! interaction between magnetic impurities on the electron relaxation rates in a normal metal. The interplay between the RKKY interaction and the Kondo effect may result in a nonmonotonic temperature dependence of the electron momentum relaxation rate, which determines the Drude conductivity. The electron phase relaxation rate, whic...

Nuclear Magnetic Relaxation

Antimony NQR and Nuclear Magnetic Relaxation

Antimony nuclear quadrupole resonance frequencies in (NH 4 ) 6 Sb 4 (S0 4 ) 3 F 1 2 crystals were measured as a function of temperature, and no evidence of phase transition was detected between 77 K and room temperature. However, the resonance frequencies do not follow the Bayer type exactly. Such an anomaly is attributed to the effect of rotation of ammonium ions which form hydrogen bonds of t...