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Cr$sup 51$ NUCLEAR ORIENTATION IN A CERIUM MAGNESIUM NITRATE CRYSTAL. Technical Report No. 5

Technical Report ·
OSTI ID:4675511
;
Cr/sup 51/ nuclei were aligned in Cr/sup 3+/ ions introduced into a slightly cloudy, spherical single crystal of cerium magnesium nitrate and magnetically cooled to temperatures down to 1/325 deg K/sup -1/. Angular distribution and linear polarization data are interpretable on the basis of paramagnetic resonance information, if in addition the presence of intermediate state reorientation is accounted for by coefficients Q/sub k/in the Legendre polynomial expansion of the radiation pattern W ( theta ) = 1 + A/sub 2/P/sub 2/ + A/sub 4/P/sub 4/. It was found that Q/s ub 2/ = 0.40 plus or minus 0.04, Q/ sub 4/=43 plus or minus 12 at 1/T= 325 if delta = plus or minus (E2/M1)/sup 1/2/ = + 0.44 plus or minus 0.05. These results are contrasted with those of an earlier experiment, and compared with a theoretical treatment of reorientation by static, isotropic hfs coupling which yields in the hard-core limit at this temperature Q/sub 2/ = 0.61. (auth)
Research Organization:
Kansas. Univ., Lawrence
NSA Number:
NSA-17-034882
OSTI ID:
4675511
Report Number(s):
NP-13051
Country of Publication:
United States
Language:
English

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Related Subjects

ANGULAR DISTRIBUTION
CERIUM NITRATES
CHROMIUM 51
CONFIGURATION
COOLING
CRYSTALS
ENERGY LEVELS
HYPERFINE STRUCTURE
INTERACTIONS
IONS
LEGENDRE FUNCTIONS
LEGENDRE POLYNOMIALS
MAGNESIUM NITRATES
MAGNETIC FIELDS
MATHEMATICS
NUCLEAR MAGNETIC RESONANCE
PHYSICS
POLARIZATION
RADIATIONS
TEMPERATURE