Accession Number : AD0021406


Title :   PARAMAGNETIC RESONANCE ABSORPTION OF MN PLUS PLUS IN SINGLE CRYSTALS OF CA CO SUB 3


Corporate Author : CALIFORNIA UNIV LOS ANGELES


Personal Author(s) : Hurd, F K ; Sachs, M ; Herschberger, W D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/021406.pdf


Report Date : Aug 1953


Pagination or Media Count : 31


Abstract : Paramagnetic resonance absorption of Mn++ at 9300 mc has been studied using single crystals of CaCo3 containing 0.06 per cent by weight Mn++ ions. The Mn++ spectra consists of 30 well resolved lines, approximately 3.5 gauss wide and extending over a range of 1100 gausss with a large dependence upon angular orientation between crystal axes and external magnetic field. The theory pertaining to the Mn++ resonance absorption in the CaCO3 crystal is developed and presented. The interpretation of the observed spectra is based upon crystalline field effects plus nuclear hyperfine interaction. The spectroscopic g factor is found to be essentially isotropic. The hyperfine strucutre factors A' and B' are found to be nearly equal. The fine structure constants D' and d are determined. The values assigned are: g = 2.0022 A = 8.782 x 10 - to the third power cm - to the first power D' = 3.75 x 10 - to the third power cm - to the first power g = 2.0014 B' = 8.774 x 10 - to the third power cm - to the first power d' = 4.00 x 10 - to the sixth power cm - to the first power. Small discrepancies between theory and experiment are found as well as unexpected and unexplained line splittings at certain angular orientations. (Contractor's abstract)


Descriptors :   *MANGANESE , *RESONANCE ABSORPTION , *PARAMAGNETIC RESONANCE , CRYSTALS , SPLITTING , ORIENTATION(DIRECTION) , MAGNETIC FIELDS , IONS , POWER


Subject Categories : Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE