Dynamical theory of spin noise and relaxation: Prospects for real-time NMR measurements

Timothy R. Field
Phys. Rev. E 90, 052144 – Published 20 November 2014

Abstract

Recent developments in theoretical aspects of spin noise and relaxation and their interrelationship reveal a modified spin density, distinct from the density matrix, as the necessary object to describe fluctuations in spin systems. These fluctuations are to be viewed as an intrinsic quantum mechanical property of such systems immersed in random magnetic environments and are observed as “spin noise” in the absence of any radio frequency excitation. With the prospect of ultrafast digitization, the role of spin noise in real-time parameter extraction for (NMR) spin systems, and the advantage over standard techniques, is of essential importance, especially for systems containing a small number of spins. In this article we outline prospects for harnessing the recent dynamical theory in terms of spin-noise measurement, with attention to real-time properties.

  • Figure
  • Figure
  • Figure
  • Received 30 January 2014
  • Revised 23 June 2014

DOI:https://doi.org/10.1103/PhysRevE.90.052144

©2014 American Physical Society

Authors & Affiliations

Timothy R. Field*

  • Department of Electrical & Computer Engineering, McMaster University, Hamilton, Ontario, L8S 4K1 Canada

  • *field@mcmaster.ca; http://www.ece.mcmaster.ca/˜field/; also at Department of Mathematics & Statistics, McMaster University.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 90, Iss. 5 — November 2014

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review E

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×