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http://hdl.handle.net/11375/6183
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DC Field | Value | Language |
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dc.contributor.advisor | Prestwich, W.V. | en_US |
dc.contributor.author | Islam, Aminul M. | en_US |
dc.date.accessioned | 2014-06-18T16:34:24Z | - |
dc.date.available | 2014-06-18T16:34:24Z | - |
dc.date.created | 2010-04-07 | en_US |
dc.date.issued | 1982-11 | en_US |
dc.identifier.other | opendissertations/1512 | en_US |
dc.identifier.other | 2181 | en_US |
dc.identifier.other | 1264615 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/6183 | - |
dc.description.abstract | <p>A high resolution NaI(Tl) -Ge pair spectrometer has been used to detect the primary E2 transitions following thermal neutron capture in ¹⁴³Nd, ¹⁶²Dy, ¹⁶⁴Dy, ¹⁶⁵Ho, ¹⁶⁷Er, ¹⁷³Yb and ¹⁷⁹Hf. These data, as well as other thermal, resonance and average-resonance data have been analyzed to study the radiative quadrupole strength. Some calculations have been done to retrieve the E2 intensities from the average-resonance work. A quantitative theoretical expression for the quadrupole strength function on the basis of the giant quadrupole resonance model is deduced. A comparison between the experimental and theoretical values for nuclei spanning the mass region between A=12 to A=239 shows the presence of the influence of the GQR on the radiation strength. A depression in the quadrupole strength has been observed in the mass range 144</p> <p>The energy and intensity of all the observed high energy transitions in most of the nuclei under study are presented. A set of neutron separation energies of 15 isotopes of Nd, Gd, Dy, Ho, Er, Yb and Hf has been estimated. The thermal radiative capture cross section of ¹⁴N, a standard used in this work, is determined with improved precision.</p> | en_US |
dc.subject | Physics | en_US |
dc.subject | Physics | en_US |
dc.title | Electric Quadrupole Radiation Strength in Neutron Capture | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Physics | en_US |
dc.description.degree | Doctor of Philosophy (PhD) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
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File | Size | Format | |
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fulltext.pdf | 3.45 MB | Adobe PDF | View/Open |
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