An uninvited guest: The positron in early 1930s physics

作者:Leone Matteo*; Robotti Nadia
来源:American Journal of Physics, 2012, 80(6): 534-541.
DOI:10.1119/1.3695374

摘要

A few months before its %26quot;official%26quot; discovery in September 1932 by Anderson at Cal Tech in Pasadena, the positron was almost simultaneously observed by no less than two additional research teams: one at Cavendish Laboratory in Cambridge, England, and one at Institut du Radium in Paris, France. In this paper, we examine this curious case of multiple independent observations by studying the primary literature. This study identifies the motivations that led these researchers to independently design the experiments suitable for the detection of this novel particle and shows that none of these teams were looking for a positive electron.

  • 出版日期2012-6