๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Spin-rotational relaxation for protons in solid, NH4 ClO4

โœ Scribed by R. Ikeda; C.A. McDowell

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
431 KB
Volume
14
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

โœฆ Synopsis

Proton spin-&t&u refasation times rvere measured in soIid NI-I.+CIOq from 80 to 400ยฐK. Relow 200ยฐK 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 reorientation of the NIf; ion. The spinrotational interaction cmstant was evalurtted using the shielding constant and the calculated potential energ. The spin-rotational rclasation rate predicted by the transient rotation model shows reasonably good agacmcnt with the observed value.

๐Ÿ“œ SIMILAR VOLUMES

Spinโ€”lattice relaxation of protons in so
Spinโ€”lattice relaxation of protons in solid (NH4)2GeF6
โœ E.E. Ylinen; J.E. Tuohi; L.K.E. Niemelรค ๐Ÿ“‚ Article ๐Ÿ“… 1974 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 299 KB

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 reorienta

Proton spin-lattice relaxation and excha
Proton spin-lattice relaxation and exchange splitting of the torsional ground state in NH4ClO4
โœ W. Gรผttler; J.U. Von Schรผtz ๐Ÿ“‚ Article ๐Ÿ“… 1973 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 620 KB

The proton spin-lattice rciaxation tirm TI has been measured in a crq'stallinc powder of Ntl&iO,: temperature to 4ยฐK at Larmor frequencies of 22 and 56 hiHz. At temperatures below 20ยฐK the recovery of the magnetizntion is given by z~ sum of two cxponentials, Three Tl-minima are ohserved, and one of