波谱学杂志 ›› 2000, Vol. 17 ›› Issue (3): 259-263.

• 研究论文 • 上一篇    

动态核极化谱仪的技术改造

方可, 周建威, 谭萍, 刘朝阳, 曾凡明, 邱衍军, 裘鉴卿, 叶朝辉   

  1. 中国科学院武汉物理与数学研究所 波谱与原子分子国家重点实验室, 武汉 430071
  • 收稿日期:2000-01-17 修回日期:2000-02-14 出版日期:2000-06-05 发布日期:2018-01-11
  • 作者简介:方可,男,1975年出生,硕士研究生
  • 基金资助:
    中国科学院仪器设备改造资助项目

THE IMPROVEMENT OF DNP SPECTROMETER

FANG Ke, ZHOU Jianwei, TAN Ping, LIU Chaoyang, ZENG Fanming, QIU Yanjun, QIU Jianqin, YE Chaohui   

  1. State Key Laboratory of Magnetic Resonance and Atomic and olecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071
  • Received:2000-01-17 Revised:2000-02-14 Online:2000-06-05 Published:2018-01-11

摘要: 介绍了动态核极化(DNP)谱仪数字系统的改造和一套的射频发射和接收系统的建立.谱仪射频通道的90°脉冲宽度为5μs,能完全满足固体交叉极化和大功率去耦的实验要求.实现了DNP增强曲线的自动测量

关键词: 动态核极化(DNP), 谱仪, 核磁共振(NMR), 数字系统, 数字信号处理(DSP)

Abstract: The improvement of digital system of DNP spectrometer and establishment of a new system of transmission and receiver are introduced in this article. The π/2 pulse width is less than 5μs, which meets the requirement of CP and high power decoupling. The DNP enhancement curve can be obtained automatically.

Key words: Dynamic nuclear polarization (DNP), Spectrometer, NMR, Digit system, DSP