Accession Number:

AD0412659

Title:

ELASTIC SCATTERING OF NEGATIVE PIONS BY PROTONS AT BEV/C,

Descriptive Note:

Corporate Author:

MICHIGAN UNIV ANN ARBOR

Personal Author(s):

• Damouth,D.E.
• Jones,L.W.
• Perl,M.L.

Report Date:

1963-06-01

Pagination or Media Count:

53.0

Abstract:

The negative pion-proton differential elastic cross section at an incident pion momentum of 2 Bevc has been measured in a spark chamber experiment. Approximately 7000 events were obtained in the center of mass angular range .95 greater than cos theta asterisk greater than -.97. The data show an approximately ex ponential diffraction peak which when extrapo lated to cos theta asterisk 1.0 is con sistent with the optical theorem prediction. A second peak, with a maximum of 23 mbsr is seen at cos theta asterisk .2. The backward s ering is not isotropic, but drops smoothly from .12 mbsr at cos theta asterisk 0 to about .01 mbsr at the most backward angles. An analysis in terms of a simple diffraction model and a fit in powers of cos theta asterisk are given. Author

Descriptors:

• *NUCLEAR SCATTERING
• ELASTIC SCATTERING
• QUANTUM THEORY
• MESON BOMBARDMENT
• PROTON SCATTERING
• POTENTIAL SCATTERING
• ENERGY
• RESONANCE
• DIFFRACTION
• RESONANCE SCATTERING

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE