Bruker AMX Y Channel Heteronuclear Decoupling Using a Linear Amplifier

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Under both static and common MAS conditions (< 15 kHz) the question of residual X-Y heteronuclear decoupling can become a complicating factor in the analysis of various NMR results. In our lab the impact of {sup 31}P-{sup 23}Na dipolar coupling on the observed {sup 23}Na M{sub 2} relaxation for a series of sodium phosphate glasses was recently investigated by employing continuous wave {sup 31}P decoupling during the entire pulse sequence. Initially these efforts were complicate by the inability to provide a gating pulse during the data acquisition using the standard Bruker nomenclature, go=2, for the acquisition loop. A pulse sequence ... continued below

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1 p.

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Alam, Todd M. & Lang, David P. August 2, 1999.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Under both static and common MAS conditions (< 15 kHz) the question of residual X-Y heteronuclear decoupling can become a complicating factor in the analysis of various NMR results. In our lab the impact of {sup 31}P-{sup 23}Na dipolar coupling on the observed {sup 23}Na M{sub 2} relaxation for a series of sodium phosphate glasses was recently investigated by employing continuous wave {sup 31}P decoupling during the entire pulse sequence. Initially these efforts were complicate by the inability to provide a gating pulse during the data acquisition using the standard Bruker nomenclature, go=2, for the acquisition loop. A pulse sequence to overcome these restrictions is given below. Our AMX400 instrument is configured with a 3 channel MCI, but utilizes a linear AMT amplifier on the 3rd channel (requiring gating pulse via the C4 program call during the entire time it is on). The standard acquisition loop has been replaced by direct adc and aq commands for data acquisition. Unlike the go=2 statement which does not allow a C4 gating command to be included, these individual acquisition commands can all include distinct C4 gating.

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1 p.

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OSTI as DE00009497

Medium: P; Size: 1 pages

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  • Journal Name: The NMR Newsletter; Other Information: Submitted to The NMR Newsletter

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  • Report No.: SAND99-2026J
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 9497
  • Archival Resource Key: ark:/67531/metadc792736

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 2, 1999

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

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  • April 6, 2017, 6:31 p.m.

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Alam, Todd M. & Lang, David P. Bruker AMX Y Channel Heteronuclear Decoupling Using a Linear Amplifier, article, August 2, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc792736/: accessed January 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.