波谱学杂志 ›› 1995, Vol. 12 ›› Issue (6): 677-684.

• 研究论文 • 上一篇    

基于衰减器的整形脉冲

王宏钧, 张惠苓, 陈其铣   

  1. 中国科学院福建物质结构研究所, 福州 350002
  • 出版日期:1995-12-05 发布日期:2018-01-17

ATTENUATOR-BASED SHAPED PULSES

Wang Hongjun, Zhang Huiling, Chen Qixian   

  1. Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou 350002
  • Online:1995-12-05 Published:2018-01-17

摘要: Varian公司所有新的Uinty系统NMR诺仪的观察道和去偶道都装备了由计算机控制的63dB的衰减器、线性放大器以及T/R开关的前置放大器,因此,所有的Unity系统自身都具有脉冲整形能力,在Varian的计算机系统中,采用的整形脉冲程序,是以其源码语言形式表达的,能使衰减器产生高斯脉冲,半高斯脉冲和Hermite脉冲。

关键词: 核磁共振, 整形脉冲, 衰减器

Abstract: All new UNITY systems are equipped with computer-controlled 63 dB attenuators on the observe and decouple channels,as well as with linear amplifiers and T-R switch preamplifiers.
The combination of these elements means that the capability for performing shaped pulse experiments is inherent in all UNITY system.
There does exist a routine in/unmr/psg named shape-pulse.c,which generates Gaussian,half-Gaussian,and hermit pulses for attenuators,and this routine is documented in the source code of the routine.

Key words: NMR, Shaped Pulses, Attenuator