10 Story Fantasy v01n01 (1951 Spring) (Tawrast EXciter)

This 1948 story, published in 1951, by Author C Clarke was the inspiration for 2001 A Spacey Oddysey.  It does not seem like a particularly good story, but it is a start.

https://archive.org/stream/10_Story_Fantasy_v01n01_1951-Spring_Tawrast-EXciter#page/n39/mode/2up