Study of Low Energetic Atomic Collisions in Solids Using High-Resolution (n, γ) Spectroscopy
Study of Low Energetic Atomic Collisions in Solids Using High-Resolution (n, γ) Spectroscopy
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使用高分辨率 (n, γ) 光谱研究固体中的低能原子碰撞
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
G. Greene
中科院分区：
文献类型：
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作者：
J. Jolie;S. Ulbig;H. Börner;K. Lieb;S. Robinson;P. Schillebeeckx;E. Kessler;M. Dewey;G. Greene
我们展示了超高分辨率（n, γ）光谱如何用于研究动能为数百eV的原子碰撞。热中子捕获后伽玛发射产生的后坐力导致随后伽玛跃迁的多普勒展宽。这种多普勒展宽的测量使得研究目标时间的慢化过程与时间分辨率的差异成为可能。作为一个例子，我们研究了Ti在Ti和TiC中的反冲。
We show how ultra-high-resolution (n, γ) spectroscopy can be used to study atomic collisions at kinetic energies in the order of hundreds of eV. The recoil originating from gamma emission after thermal neutron capture causes Doppler broadening of subsequent gamma transitions. The measurement of this Doppler broadening allows the study of the slowing-down process in the target time differentially with fs time resolution. As an example we investigated Ti recoiling in Ti and TiC.