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半整数四极核的中心跃迁对梳状脉冲序列的响应随四极常数ωq而变化。在梳伏脉冲的平均射频汤强度ωe(以弧度·秒-1为单位)满足ωq/ωee/2π处;而当ωq/ωe>2时,所得的谱线在2ωe/2π处,理论计算与实验结果是一致的。本文得到的结论表明,梳状脉冲序列将可能成为研究这The comb-pulse response of a system of half-integer quadruplar nuclei depends on the quadrupolar coupling constant ωq. When the average rf field strength ωe (in rad. s-1) satisfies the condition ωq/ωee/(2π); and when ωq/ωe > 2.0, the resul tant line appears at 2ωe/(2π). Theoretical calculations are in agreement with experiments.These consequences indicate that the comb-pulse sequence will probably become a powerful technique for investigating phase transitions and dynamic processes in these systems.
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