A Caltech Library Service

Experimental Procedure for the Determination of the Number of Paramagnetic Centers

Yariv, A. and Gordon, J. P. (1961) Experimental Procedure for the Determination of the Number of Paramagnetic Centers. Review of Scientific Instruments, 32 (4). pp. 462-463. ISSN 0034-6748. doi:10.1063/1.1717412.

PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


The determination of the number of paramagnetic centers in a given crystal is usually performed by comparing the resonance signal of the unknown centers with that of a calibrated standard. The two most often used standards are CuSO4·5H2O and DPPH. In the procedure described below the number of "spins" is obtained from a measurement of the reflection coefficient of a reflection cavity containing the spins; or more specifically from the change in the reflection coefficient between the "on resonance" and "off resonance" conditions. The measurements can be performed with the aid of the conventional equipment for the measurement of reflection coefficients. Great simplification is realized when a variable coupling cavity [1] is used.

Item Type:Article
Related URLs:
URLURL TypeDescription
Additional Information:© 1961 The American Institute of Physics. Received October 27, 1959; and in final form, January 18, 1961. The authors are indebted to J.M. Dziedzic for experimental assistance and to Dr. K. Nassau for growing the crystal used in the experiment.
Issue or Number:4
Record Number:CaltechAUTHORS:YARrsi61
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12727
Deposited By: Archive Administrator
Deposited On:21 Dec 2008 05:39
Last Modified:08 Nov 2021 22:32

Repository Staff Only: item control page