S BAND ESE SPECTROMETER DEVELOPMENT

S波段(2-4 GHz)电子自旋共振光谱仪进行了升级，允许脉冲 具有独立可变脉冲间的最多四个脉冲的序列 延迟和脉冲持续时间以及0、90、180和 相对于微波源270度。一种全新的 为控制升级的仪器而开发的计算机程序允许 这些新的脉冲序列特征将由用户编程而无需 更改实际程序代码。脉冲序列编程 能力可扩展到任意数量的脉冲的脉冲序列 允许在算术控制下自动进行相位循环 由用户指定的表达式。此功能允许阶段 在最少1024个脉冲上循环序列。

The S-band (2-4 GHz) ESE spectrometer was upgraded to allow pulse sequences of up to four pulses with independently variable inter-pulse delays and pulse durations, and pulse phase shifts of 0, 90, 180 and 270 degrees relative to the microwave source. A completely new computer program developed to control the upgraded instrument allows these new pulse sequence features to be programmed by the user without changing actual program code. The pulse sequence programming capability is scalable to pulse sequences of any number of pulses and allows for automatic phase cycling under the control of arithmetic expressions specified by the user. This capability allows phase cycling sequences over a minimum of 1024 pulses.