Cancellation of inhomogeneous chemical shift of Mossbauer line
Gol'danskii V.I., Karyagin S.V., Namiot V.A.
The proportionality of the total 5-electron density at the location of the nucleus, in the case of a Fermi contact interaction, makes it possible to propose the use of a specially selected radio-frequency field to cancel out the most significant cause of Mossbauer-line broadening of long-lived isomers, namely, the inhomogeneous chemical (monopole) shift.