Nuclear photon scattering by /sup 12/C and /sup 16/O

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.28.8· OSTI ID:5833455

Dodge, W R; Hayward, E; Leicht, R G; McCord, M; Starr, R

The elastic scattering cross sections for /sup 12/C and /sup 16/O have been measured in the energy ranges 23.5--39 and 25--39 MeV, respectively. These data have been compared with the Mainz total photonuclear absorption cross sections and interpreted in terms of a form factor applied to the gauge term of the Thomson amplitude as well as an E2 amplitude. For /sup 12/C the E2 strength found is 1.9/sub -0.7//sup +0.8/ total, isoscalar plus isovector, energy-weighted sums, and for /sup 16/O 1.25/sub -0.9//sup +1.3/. All of the /sup 12/C data taken at 23.5 MeV, the peak of the giant resonance, where the real part of the scattering amplitude vanishes, have been combined to determine the total photonuclear absorption cross section at that energy, 19.7 +- 0.4 mb. The branching ratio GAMMA/sub 4.4//GAMMA/sub 0/ at 23.5 MeV was found to be 0.23 +- 0.07.

• Research Organization: National Bureau of Standards, Washington, DC 20234
• OSTI ID: 5833455
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 28:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
BRANCHING RATIO
BREMSSTRAHLUNG
CARBON 12 TARGET
CROSS SECTIONS
DATA
ELASTIC SCATTERING
ELECTROMAGNETIC RADIATION
ENERGY RANGE
EXPERIMENTAL DATA
GIANT RESONANCE
INFORMATION
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 TARGET
PHOTONUCLEAR REACTIONS
RADIATIONS
RESONANCE
SCATTERING
SCATTERING AMPLITUDES
TARGETS
TOTAL CROSS SECTIONS