pi. /sup +/ photoproduction off /sup 16/O and /sup 9/Be near threshold

Journal Article · Mon Oct 01 04:00:00 EDT 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.20.1603· OSTI ID:5813811

Booth, E C; Chasan, B; Milder, F L; Roberts, B L; Comuzzi, J

The total cross sections relative to photoproduction off the proton have been measured for the reactions /sup 16/O(..gamma..,..pi../sup +/)/sup 16/N and /sup 9/Be(..gamma..,..pi../sup +/)/sup 9/Li over the energy region from the production threshold up to 12 MeV over threshold. A distorted-wave impulse approximation calculation has been performed for the /sup 16/O(..gamma..,..pi../sup +/)/sup 16/N reaction and is seen to be approx. = 30% higher than the observed cross section from threshold to 10 MeV. The /sup 9/Be(..gamma..,..pi../sup +/)/sup 9/Li reaction represents the first (..gamma..,..pi../sup +/) measurement near threshold in which the cross section is not dominated by the sigma-arrow-right x epsilon-arrow-right term in the production Hamiltonian.

• Research Organization: Department of Physics, Boston University, Boston, Massachusetts 02215
• OSTI ID: 5813811
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 20:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651315* -- Nuclear Properties & Reactions
A=6-19
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
651325 -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
BASIC INTERACTIONS
BERYLLIUM 9 TARGET
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOSONS
BREMSSTRAHLUNG
CROSS SECTIONS
DISTORTED WAVE THEORY
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
HADRONS
HAMILTONIANS
IMPULSE APPROXIMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
LITHIUM 9
LITHIUM ISOTOPES
MATHEMATICAL OPERATORS
MESONS
MEV RANGE
MEV RANGE 100-1000
NITROGEN 16
NITROGEN ISOTOPES
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
OXYGEN 16 TARGET
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
PIONS
PIONS PLUS
PSEUDOSCALAR MESONS
QUANTUM OPERATORS
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
TARGETS
THRESHOLD ENERGY
TOTAL CROSS SECTIONS