Synchrotron Mössbauer source of57Fe radiation
Synchrotron Mössbauer source of57Fe radiation
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同步加速器穆斯堡尔 57Fe 辐射源
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
G. Smirnov
中科院分区：
文献类型：
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作者：
G. Smirnov
描述了一种用于穆斯堡尔吸收和散射谱的非放射性穆斯堡尔辐射源。辐射是在Néel温度(75.3°C)的衍射条件下，由同步辐射X射线在硼酸铁单晶中产生的。与传统的穆斯堡尔源一样，新的同步加速器穆斯堡尔(SM)源发射的单线辐射约为自然线宽，但除此之外，发射的辐射是完全无后坐、高度定向和纯线极化的。实现了对电子散射的极高抑制。后一种情况允许人们使用脉冲同步辐射在稳态模式下进行穆斯堡尔实验，就像在正常的穆斯堡尔测量中一样。发展了SM源的理论。首先给出了用SM源获得的穆斯堡尔谱。讨论了SM源的应用。
A non‐radioactive source of Mössbauer radiation is described for use in Mössbauer absorption and scattering spectroscopy. The radiation is generated by synchrotron X‐rays in an iron borate single crystal set in diffraction conditions at the Néel temperature (75.3°C). Like a conventional Mössbauer source the new Synchrotron Mössbauer (SM) source emits single‐line radiation of about natural linewidth, but in addition the emitted radiation is fully recoilless, highly directed and of pure linear polarization. An extremely high suppression of the electronic scattering is achieved. The latter circumstance allows one to perform Mössbauer experiments using pulsed synchrotron radiation in a steady state mode as in a normal Mössbauer measurement.The theory of the SM source is developed. First Mössbauer spectra obtained with the SM source are shown. Applications of the SM source are discussed.