在线穆斯堡尔谱测量装置

An on-line Mssbauer spectrometer

穆斯堡尔效应自从被发现以来,已经成为研究超精细相互作用的不可缺少的工具,具有十分广泛的应用。然而其应用又受限制于一些长半衰期母核的核素。随着放射性核束技术的发展,基于加速器与在线同位素分离(IsotopeSeparatorOn-Line,ISOL)技术的短寿命放射性核束在线穆斯堡尔测量技术也得以发展起来,扩展了穆斯堡尔谱学的应用范围。目前国际上许多加速器(如RIKEN、CERN等)的在线同位素分离装置上都已经建立了在线穆斯堡尔实验装置,并在离子注入、半导体领域取得了成功的应用。本文介绍了在中国原子能科学研究院HI-13串列加速器上尝试建立的用于在线穆斯堡尔谱测量的装置以及初步测量结果。

Mo··ssbauer effect has become a necessary tool in the study of hyperfine interactions since it was discovered. But the application of this technique was restricted by several factors such as the recoil-free factor and the lifetime of the Mo··ssbauer precursor isotope. With the development of the radioactive nuclear beam techniques, dozens of short life M6ssbauer precursor isotopes were discovered. After educed from the Isotope Separator On-Line （ISOL） facility, the Mo··ssbauer precursor isotopes were implanted into the samples, and then the Mo··ssbauer spectra were recorded on-line. The on-line Mo··ssbauer spectrometers have been established on many ISOL-type radioactive facilities （such as CERN, RIKEN） all over the world. In this paper a test bench of on-line Mo··ssauber spectrometer is introduced.