PRELIMINARY EXPERIMENTAL ANALYSIS OF 16.2 BEV/C PION (MINUS) INTERACTIONS IN EMULSION
Abstract
The interactions of 16.2 + or - 0.6 Bev/c Pion (minus) in Ilford K-5 emulsion were studied. In 1.11 cu cm of emulsion (0.1% of the stack), 139 events were found. The largest event had 33 prongs, while the smallest had 3 prongs. The median was 12 prongs. A total of 1926 prongs were produced for an average of 14 prongs per event. A total of 841 cm of prong track was followed, yielding 1115 prong terminations. Of these terminations, 1063 were protons or light fragments, 28 were pions, and 15 were interactions in flight. Two stars in flight were produced by energetic pions, Three by heavy particles of mass two or three, and the others by baryons, probably protons. The mean free path for stars in flight was 56 cm. One definite and ten possible strange particles were found. A definite Sigma decay in flight was seen. Ten events were seen which might have been Sigma interactions at rest or large scale scatters of protons nearly at rest. No other strange particles were found, nor were any anti-particles found.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1962
- Accession Number
- AD0482267
Entities
People
- Manuel L. Sanches
- Thomas R. Tyler
Organizations
- Naval Postgraduate School