gamma iron

1. Comparing with aluminum window, the iron window produces less Compton electrons while the gamma rays pass through the input window. Thus, the iron was selected as the input window material.
   γ射线穿过铁窗较铝窗产生的康普顿电子少，入射窗选择铁材料。

noun

1. a nonmagnetic allotrope of iron that is the basis of austenite