Accession Number : AD0761308

Title :   Branching Ratio for Radiative Pion Capture in 6Li and 12C,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION GREENBELT MD GODDARD SPACE FLIGHT CENTER

Personal Author(s) : Maguire,William ; Werntz,Carl

Report Date : 06 NOV 1972

Pagination or Media Count : 14

Abstract : The radiative pion capture rate in 12C and 6Li leading to bound final states is calculated using the impulse approximation. The T-matrix is obtained from the time-reversed pion photoproduction amplitude and initial-state distortion of the bound pion is taken into account. Using recently published capture schedules for pionic atoms the branching ratio R is calculated and compared to experimental values. The agreement is excellent if those experimental values are used that have been obtained by direct observation of the emitted gamma-ray and if an optical-model value for the total 2P absorption width in 12C is used. (Author)

Descriptors :   (*PIONS, NUCLEAR REACTIONS), CARBON, LITHIUM, MATRICES(MATHEMATICS), RADIOACTIVE DECAY

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE