New approach to the study of nuclear Bragg scattering of synchrotron radiation.
New approach to the study of nuclear Bragg scattering of synchrotron radiation.
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研究同步辐射核布拉格散射的新方法。
DOI：
10.1103/physrevlett.58.2699
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发表时间：
1987
影响因子：
8.6
通讯作者：
Cooper
中科院分区：
文献类型：
--
作者：
Faigel;Siddons;Hastings;Haustein;Grover;Remeika;Cooper
在不使用延迟符合技术的情况下，以100:1的信噪比观测到了同位素富集/sup 57/Fe/sub 2/O/sub 3/同步辐射的核布拉格散射。使用高分辨率前单色仪提供5兆电子伏特的能量扩散和0.4英寸准直允许高分辨率的动态衍射效应的研究。特别是，观察到的纯核（7,7,7）反射强度表明，由于相干散射，有效寿命急剧下降。
Nuclear Bragg scattering of synchrotron radiation from isotopically enriched /sup 57/Fe/sub 2/O/sub 3/ has been observed at a signal-to-noise ratio of 100:1 without delayed-coincidence techniques. The use of a high-resolution premonochromator providing a 5-meV energy spread and 0.4'' collimation allows for high-resolution studies of dynamical diffraction effects. In particular, the observed intensity of the pure nuclear (7,7,7) reflection implies a dramatic decrease of the effective lifetime due to coherent scattering.