James Chadwick: ahead of his time

Gerhard Ecker
James Chadwick is known for his discovery of the neutron. Many of his earlier findings and ideas in the context of weak and strong nuclear forces are much less known. This biographical sketch attempts to highlight the achievements of a scientist who paved the way for contemporary subatomic physics.
Read more at https://arxiv.org/abs/2007.06926

Click to access 2007.06926.pdf


 

Possible Existence of a Neutron

James Chadwick, Nature, p. 312 (Feb. 27, 1932)
It has been shown by Bothe and others that beryllium when bombarded by α-particles of polonium emits a radiation of great penetrating power, which has been an absorption coefficient in lead of about 0.3 (cm)-1 ….
Read more at http://web.mit.edu/22.54/resources/Chadwick.pdf