Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"giant dipole resonance"”.
-
The giant dipole resonance in Silicon-28
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T21:37:20Z No. of bitstreams: 1 1980_gulbranson.pdf: 3567574 bytes, checksum: 3389b15e64072bb8b3462cb2df530684 (MD5)
-
Photon scattering from 16O above the giant dipole resonance
… We find that there are no significant compact E2 resonances within the energy range of this experiment, although the data suggest that an E2 strength greater than 0.5 total energy-weighted sums exists above 64 MeV. The data also suggest that the magnetic polarizability of a nucleon bound in 160 is …
-
An investigation of the natural line shape of the giant dipole resonance.
… form rather than the Lorentz form of a resonance function. However, the form of the resulting measured cross section is of the Lorentz type. The dependence of the giant resonance width Gamma on the excitation energy was also investigated. The variation was found to be less than 1% per …
-
Angular Correlation of Emitted Neutrons Due to Giant Dipole Resonance in Ultra Peripheral Collisions
… which excites the nuclei into a mutual giant dipole resonance (GDR) state. This excited state decays most often via neutron emission. The two emitted neutrons have an expected angular correlation based on the idea that the neutrons are emitted independently but with a common impact …
-
A study of the photon decay modes of the giant dipole resonance in even-A neodymium isotopes
… and 18 MeV, spanning the peak of the Isovector Giant Dipole Resonance. Inelastic scattering into the ,a-band head in 148,150Nd and the 'Yband head in 150Nd was also resolved. The measured cross sections were compared to predictions of both the Dynamic Collective Model and the Interacting Boson …
-
Elastic photon scattering from 4He between 23 and 73 MeV
… scattering in this energy range are the nuclear giant resonances at lower energies and the coherent scattering from bound nucleons and nucleon pairs at higher energies. The data collected in this experiment place constraints on the peak photoabsorption of the giant dipole resonance, which has …
-
Elastic photon scattering from helium-4 between 23 and 73 MeV
… scattering in this energy range are the nuclear giant resonances at lower energies and the coherent scattering from bound nucleons and nucleon pairs at higher energies. The data collected in this experiment place constraints on the peak photoabsorption of the giant dipole resonance, which has …
-
Radiative proton capture to second harmonic giant dipole states in ¹³N
… 46 MeV which is twice the centroid energy of the Giant Dipole Resonance (GDR) based on the ground state of ¹³N.
-
Forward to backward asymmetry of the photoneutron cross sections of calcium and lead in the energy region of the isovector electric quadrupole resonance
… data span the energy in which the Isovector Giant Quadrupole Resonance (IVQR) is expected to lie. Photons for this experiment were derived from an 49.7 MeV electron beam by a bremsstrahlung-tagging monochromator. Neutrons were detected in an array of NE213 liquid scintillator detectors; …
-
Alternative design concepts for the electron to photon converter in the accelerator based production of technetium-99m
… under development is the utilization of the Giant Dipole Resonance in the (y,n) reaction cross-section. This method is being studied for use in the production of 99mTc from enriched 100Mo by electron beam induced bremsstrahlung photons. Of primary concern to any radioisotope production system …
-
Elastic photon scattering below neutron emission threshold in Bi, 208Pb, 207Pb, 206Pb, Tl, Hg, Ce, and Ba
… MeV in doubly magic 208Pb amounts to .5% of the dipole sum, and that near 7 MeV to about 1%. In the neighboring isotopes this strength is distributed among many more levels than in 208pb , but it remains reasonably localized and the total amount of strength seems to stay about constant. Structure …
-
NUCLEAR COLLECTIVE MODES AT FINITE TEMPERATURE AS A PROBE OF NUCLEAR STRUCTURE AND DYNAMICS
… The gamma emission associated with the Dynamical Dipole (DD) mode and the Giant Dipole Resonance (GDR) is a very good tool to study the role of the nuclear interaction in compound-nucleus formation and decay as is discussed in this Thesis with two examples, namely a measurement of DD gamma …