Efficient emission of positronium atoms from a Na-coated polycrystalline tungsten surface
Efficient emission of positronium atoms from a Na-coated polycrystalline tungsten surface
复制标题
从钠涂层多晶钨表面有效发射正电子原子
DOI：
10.1088/1742-6596/443/1/012075
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Y. Nagashima
中科院分区：
文献类型：
--
作者：
H. Terabe;S. Iida;K. Wada;T. Hyodo;A. Yagishita;Y. Nagashima
在 KEK-IMSS 慢正电子设施中，使用脉冲慢正电子束测量了从清洁和钠涂层钨表面发射的正正电子素的飞行时间光谱。研究发现，钠涂层样品的正电子素发射效率是未涂层钨表面的几倍。
Time-of-flight spectra for the ortho-positronium emitted from clean and Na-coated tungsten surfaces have been measured using the pulsed slow positron beam at KEK-IMSS slow positron facility. Emission efficiency of positronium from the Na-coated sample was found to be several times greater than that from uncoated tungsten surfaces.