A SEARCH FOR ANOMALOUS ABSORPTION OF HIGH ENERGY NEGATIVE PARTICLES
Abstract
Experimental data showed that the sea-level intensity of negative nonelectronic 0.37- to 1.67-Bev/c particles absorbed in 147 g/sq cm of Pb is less than 1.0 x 0.001 particles/sq cm-steradian-hr. This suggested an upper limit of 2.5 x 0.001 particles/sq cm-steradian-hr for the intensity of negative 0.45- to 1.75-Bev/c pi-mesons or 0.05% of the total intensity in this momentum interval. The same upper limit was established for the intensity of negative 0. 69- to 1.75-Bev/c protons. A lower limit of 6.9 x 10 to the fifth power g/sq cm or 6/1 x 10 to the fourth power cm of Pb was set on the removal path length of 0.37- to 1.67-Bev/ c micro-mesons. The local production of 0.45- to 1.02-Bev/c micro-mesons was less than 8.8 x 0.00001 particles/sq cm-steradian-hr-m. A momentum spectrum which was obtained for the nonelectronic particles that stop in 10 cm of Pb at sea level confirmed the principal aspects of the spectrum obtained by Todd (Ph.D thesis, Univ. of Washington, 1952) at sea level. (See also AD15374)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1953
- Accession Number
- AD0015375
Entities
People
- Catherine E. Miller
- G. R. Garrison
- J. E. Henderson
- W. M. Sandstrom
- W. R. Davis
Organizations
- University of Washington