This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.
Permalink
https://hdl.handle.net/2142/25578
Description
Title
Elastic photon scattering in 208Pb and 206Pb
Author(s)
Starr, Richard Douglas
Issue Date
1979
Doctoral Committee Chair(s)
Axel, P.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
elastic photon scattering
lead isotopes
photoabsorption
giant magnetic dipole resonance
Language
en
Abstract
Average elastic photon scattering cross sections were measured for
208Pb and 206Pb between 9.5 MeV and 12.0 MeV. The results indicate that there is a significant amount of fine structure in the photoabsorption cross section in 208pb in this energy region, but that 206pb
has little or no fine structure. Three concentrations of strength in 208pb at 10.04, 10.60, and
11.27 MeV have been found to be mainly dipole. This is in disagreement with recent inelastic electron scattering results which claim that this strength is E2.
Finally, the parity of the 7.06 MeV level in 208pb was measured . pane-polar1zed photons and was found to be Jpi = 1-. This
using pions = contradicts an earlier, tentative assignment of Jpi = 1+, which implied that the 7.06 level was an important part of the giant magnetic dipole
resonance 1n 208Pb.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
