A Six-Pulse PASS MAS-NMR Technique Solved by a Phasor Method

✍ Scribed by Birgit Effey; J.A. Butcher Jr.; R.L. Cappelletti

• Book ID: 102595647
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 141 KB
• Volume: 132
• Category: Article
• ISSN: 1090-7807
• DOI: 10.1006/jmre.1998.1413

✦ Synopsis

The PASS MAS-NMR technique is capable of recovering full intensities of the central resonances of a spectrum by phase adjusting the spinning sidebands. This variant of the original PASS sequence by Dixon uses six pulses instead of four. The addition of two pulses provides more flexibility in choosing the spacing between pulses and therefore eliminates pulse overlap and receiver dead-time problems. The nonlinear, underdetermined PASS equations were solved using a graphical phasor method. All PASS sequences were successfully tested. A table of the six pulse delay times for different pitches is presented.