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Spin—lattice relaxation of protons in solid (NH4)2GeF6

✍ Scribed by E.E. Ylinen; J.E. Tuohi; L.K.E. Niemelä

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
299 KB
Volume
24
Category
Article
ISSN
0009-2614

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✦ Synopsis

Nuclear spin-lattice relaxation times T, for protons in polycrystalline (NH4)2GeF6 were measured by the NMR pulse method from room tempersture to liquid helium temperature at 8 MHz and at 52 MHz. An anomalous temperature dependence of T1 WIS observed below LS'K at 8 hlHz. Parameters of the reorientation motion above 60°K were calculated for the NH4f ion.

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Spin-rotational relaxation for protons i
Spin-rotational relaxation for protons in solid, NH4 ClO4
✍ R. Ikeda; C.A. McDowell 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 431 KB

Proton spin-&t&u refasation times rvere measured in soIid NI-I.+CIOq from 80 to 400°K. Relow 200°K the observed relsstltion times are due to dipoh interaction, abox that iemp--rature spin-rotational interactions become predominani. A potential barrier of 0.70 kcal mole-' was obtained for the reorie