Synthesis of carbon/limonite composites through CVD

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• 作者：Toshiki Tsubota ; Shinji Aoki ; Teruhisa Ohno ; Tomoko Suenaga ; Koichi Kuramoto ; Tetsuro Manabe ; Hirofumi Yajima
• 关键词：N-14 ; Quadrupole resonance ; Double resonance ; Histamine ; Quinolinic acid
• 刊名：Carbon
• 出版年：2008
• 期刊代码：10_00086223
• 类别：ms
• 出版时间：March 2008
• 卷：46
• 期：3
• 页码：563
• 文件大小：37 K

摘要

¹H–¹⁴N nuclear quadrupole double resonance using magnetic field cycling between high and low magnetic field and solid effect in the low magnetic field is analyzed in details. The transition probabilities per unit time for the solid-effect transitions are calculated. The double resonance spectra are calculated in the limiting cases of fast and slow nitrogen spin–lattice relaxation. The double resonance spectra are measured in histamine and quinolinic acid. The experimental spectra are analyzed and the ¹⁴N NQR frequencies are determined.