【摘要】 <正> 随着穆斯鲍尔谱学研究和应用工作的发展,要求谱仪具有高质量、多功能的特性,我们研制成的绝对定标等速驱动谱仪是在等加速谱仪的基础上,扩大了“等速驱动”和“激光测速”两个功能。在提高谱仪的性能,尤其是线性指标方面也取得了一些经验。 等速谱仪与等加速谱仪相比,有其突出的优点:它可以把驱动速度调节在所需要的范围内作较高精度的测量,例如在共振峰位处监测计数率随温度的变化,以很高的精度测量相变点。在穆斯鲍尔双共振、极化效应和无反冲因子测量等方面,它也是必不可少的手段。更多还原

【Abstract】 Introduced in this article is a constant velocity Mossbauer spectrometer, which has a laser-velocity-measuring-system for calibrating absolute velocity. It adopts a special reference singnal waveform to reduce the disturbances of the fast flyback, and the designs of the spring and the drive-power-amplifier circuit were improved. The stability of the spectrometer is better than 0.1% (24 h) with line width < 0.27mm/s (α-Fe, the third and fourth lines).更多还原