DIFFUSION NARROWING OF NUCLEAR MAGNETIC RESONANCE LINEWIDTH OF F$sup 19$ IN CaF$sub 2$: Sm$sup 2$$sup +$
Journal Article
·
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
Nuclear magnetic resonance linewidths of F/sup 19/ in a synthetic CaF/ sub 2/: Sm/sup 2+/ single crystal and natural CaF/sub 2/ single crystals have bcen measured over a temperature range from 88 to 668 deg K and over a range of H/ sub 1/ from 2.0 to 29 mG. Up to temperatures of about 400 deg K results are in agreement with existing theories of saturational narrowing. At higher temperatures the line narrowed in the samariumdoped crystal but not in the natural crystals. This narrowing was attributed to a decrease of the fluorine dipole interaction due to fluorine interstitial diffusion. An activation energy E = 0.26 ev was calculated. (auth)
- Research Organization:
- Martin Co., Denver
- NSA Number:
- NSA-17-031208
- OSTI ID:
- 4700207
- Journal Information:
- Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 131; ISSN PHRVA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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· Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.)
·
OSTI ID:4130187