In-flight radiative capture of charged pions on light nuclei
Thesis/Dissertation
·
OSTI ID:6144155
The in-flight radiative capture of charged pions on light nuclei is studied in the distorted wave impulse approximation (DWIA). The final nuclear states are restricted to discrete, isospin analogs of states of the target nucleus. The distortions of the incident pion waves are incorporated via complex optical potentials. We apply time reversal to a local version of the photoproduction operator of Blomqvist and Laget to obtain the elementary radiative capture operator. We calculate, mainly at T/sub ..pi../ = 50 MeV, the differential cross sections of ..pi../sup +/ capture on /sup 12/C, /sup 13/C and /sup 15/N and explore the effects of the different terms of the elementary radiative capture operator, the sensitivity to the optical potential and the effects of using nuclear structure fitted directly to electron scattering form factors versus nuclear structure based on the results of Cohen and Kurath. We find that for /sup 12/C, the cross section is almost fully determined by the M1 electron scattering form factor on /sup 12/C. For capture on /sup 13/C and /sup 15/N, we find interesting operator effects and strong sensitivity to the pion optical potential. Finally, we explore the effects of including full nonlocal pion propagator effects.
- Research Organization:
- Pittsburgh Univ., PA (USA)
- OSTI ID:
- 6144155
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
651315* -- Nuclear Properties & Reactions
A=6-19
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CAPTURE
CARBON 12 TARGET
CARBON 13 TARGET
CHARGED-PARTICLE REACTIONS
DATA
DISTORTED WAVE THEORY
ELECTRONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
FERMIONS
FORM FACTORS
HADRON REACTIONS
INFORMATION
ISOBARIC ANALOGS
LEPTONS
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
NITROGEN 15 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
OPTICAL MODELS
PARTICLE PROPERTIES
PION PLUS REACTIONS
PION REACTIONS
PROPAGATOR
SCATTERING
TARGETS
THEORETICAL DATA
A=6-19
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CAPTURE
CARBON 12 TARGET
CARBON 13 TARGET
CHARGED-PARTICLE REACTIONS
DATA
DISTORTED WAVE THEORY
ELECTRONS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
FERMIONS
FORM FACTORS
HADRON REACTIONS
INFORMATION
ISOBARIC ANALOGS
LEPTONS
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
NITROGEN 15 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
OPTICAL MODELS
PARTICLE PROPERTIES
PION PLUS REACTIONS
PION REACTIONS
PROPAGATOR
SCATTERING
TARGETS
THEORETICAL DATA