The average ranges before decay of two monoenergetic mesotron groups have been measured. Within the statistical errors, the ranges are found to be in the same ratio as the average effective momenta, as theoretically predicted. From the two above measurements, and with a mesotron mass ev/, one obtains the values and second for the proper lifetime of mesotrons, in excellent agreement with previous measurements by Rossi and Hall.
- Received 23 March 1942
- Published in the issue dated June 1942
© 1942 The American Physical Society