The inverse cubic dependency of the acceleration of a rotor on its diameter allows for mechanical dynamics comparable to spin dynamics in coupled spin systems. Rotor acceleration up to 300 kHz/s was measured. This feature can be used to simplify existing experiments and explore entirely new ones in
Variable-Amplitude Cross-Polarization MAS NMR
β Scribed by O.B. Peersen; X.L. Wu; I. Kustanovich; S.O. Smith
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 466 KB
- Volume
- 104
- Category
- Article
- ISSN
- 1064-1858
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
A method for broadening the Hartmann-Hahn matching condition for cross polarization under magic angle spinning is presented. Variabkfkctive-field cross polarization (VEFCP) employs different effective radio-frequency (rf ) fields on the 'H channel during mixing, while the "C rffield remains constant
Cross-polarization (CP) magic angle spinning (MAS) solid-state 13 C NMR spectra of five steroidal sapogenins: tigogenin ((25R)-5Ξ±-spirostan-3Ξ²-ol), hecogenin (3Ξ²-hydroxy-(25R)-5Ξ±-spirostan-12-one), diosgenin (( 5 -(25R)-5Ξ±-spirosten-3Ξ²-ol), sarsasapogenin ((25S)-55Ξ²spirostan-3Ξ²-ol), and smilagenin (