Photon scattering in the giant resonance region of /sup 24/Mg, /sup 28/Si, and /sup 32/S
- 1. Nuclear Physics Laboratory and Department of Physics, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820
Description
Cross sections for the elastic and inelastic scattering of monochromatic photons from /sup 24/Mg, /sup 28/Si, and /sup 32/S have been measured for incident photon energies between 17 and 28 MeV, spanning the region of the giant dipole resonance. The cross sections are interpreted in terms of the coupling between the giant dipole resonances built on the ground and 21+ states. A good quantitative description of the energy-averaged cross sections is obtained in the context of the dynamic collective model, provided /sup 32/S is a vibrational nucleus and /sup 24/Mg and /sup 28/Si are prolate and oblate nuclei, respectively. The cross sections for /sup 28/Si show considerable structure that is correlated in the elastic and 21+ channels and that is not predicted by the dynamic collective model. The elastic cross section is used to infer the total photoabsorption cross section, which is shown to be somewhat more structured than implied by previous direct measurements
Additional details
Publishing Information
- Journal Title
- Physical Review, C
- Journal Volume
- 39
- Journal Issue
- 2
- Series
- Phys. Rev., C.
- Journal Page Range
- 324-330
- ISSN
- 0556-2813
- CODEN
- PRVCA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 20032282
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- COLLECTIVE MODEL; CROSS SECTIONS; DIPOLE MOMENTS; ELASTIC SCATTERING; ENERGY LEVELS; EXPERIMENTAL DATA; GIANT RESONANCE; INELASTIC SCATTERING; MAGNESIUM 24; MAGNESIUM 24 TARGET; MEV RANGE 10-100; NUCLEAR DEFORMATION; PHOTONUCLEAR REACTIONS; SHELL MODELS; SILICON 28; SILICON 28 TARGET; SULFUR 32; SULFUR 32 TARGET; VIBRATIONAL STATES
- Descriptors DEC
- DATA; DEFORMATION; ENERGY RANGE; EVEN-EVEN NUCLEI; EXCITED STATES; INFORMATION; ISOTOPES; LIGHT NUCLEI; MAGNESIUM ISOTOPES; MATHEMATICAL MODELS; MEV RANGE; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; RESONANCE; SCATTERING; SILICON ISOTOPES; STABLE ISOTOPES; SULFUR ISOTOPES; TARGETS