• Keine Ergebnisse gefunden

Destruction of the Spin Diffusion Barrier near Paramagnetic Impurities in Pure NQR

N/A
N/A
Protected

Academic year: 2022

Aktie "Destruction of the Spin Diffusion Barrier near Paramagnetic Impurities in Pure NQR"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Volltext

(1)

Destruction of the Spin Diffusion Barrier near Paramagnetic Impurities in Pure NQR

G. B. Furman and S. D. Goren

Department of Physics, Ben Gurion University, 84105 Beer Sheva, Israel Reprint requests to Dr. G. B. F.; E-mail: gregoryf@bgumail.bgu.ac.il Z. Naturforsch. 57 a, 307–314 (2002); received January 25, 2002

Presented at the XVIth International Symposium on Nuclear Quadrupole Interactions, Hiroshima, Japan, September 9-14, 2001.

The double resonance process between nuclei inside and outside the spin diffusion barrier is considered. By applying two radiofrequency fields, both of the same amplitude;one rotating at the frequency!S for nuclei inside of the diffusion barrier and one rotating at the frequency!I for nuclei outside of the diffusion barrier, the Hartmann-Hahn condition will be reached, which results in conservation of the quadrupole energy in the spin diffusion process and destruction of the spin diffusion barrier. This technique can be used to detect NQR signals from nuclei near paramagnetic impurities.

Key words: Paramagnetic Impurity; Spin Diffusion; Double Resonance.

Referenzen

ÄHNLICHE DOKUMENTE

The novelty of this paper lies in the use of a dense subset of nodal points for the eigenfunctions as the given spectra data for the reconstruction of the diffusion equation..

In particular, we obtain a reconstruc- tion of the potential function and its derivatives using only nodal data.. Results are a generalization of Law’s and

The inverse nodal problem was initiated by McLaughlin [1], who proved that the Sturm-Liouville problem is uniquely determined by any dense subset of the nodal points.. Some

The frequency offset effects of the signal interference during steady-state pulse sequences for remote nuclear quadrupole resonance (NQR) of 14 N nuclei were investigated for

The concept of transporting nuclear spin energy by means of spin diffusion has been introduced by Bloembergen [1] in order to explain the unexpected fast nuclear magnetic relaxation

In sum, global diffusion of environmental policy innovations depends, above all, on whether national capacities for action in environmental policy and prior developments in

The authors describe the role of flexible automation in increasing productivity, characterize flexible automation as a socioeconomic phenomenon, make a rough forecast

So this assumption restricts the validity of Peterka's model to the case that each technology has already gained a certain market share, let us say a certain percentage, and so