Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/19880
Title: | Two-Neutron Stripping Reactions Leading to the 153Sm, 178Yb, and 180Hf Nuclei |
Authors: | Nowikow, Igor George |
Advisor: | Burke, D. G. |
Department: | Physics |
Keywords: | two-neutron, stripping reactions, nuclei, angular, distributions |
Publication Date: | Mar-1979 |
Abstract: | <p> The (t,p) reaction has been performed on targets of 151Sm, 176Yb and 178Hf. The experiment was performed with 15 MeV tritons. The outgoing protons were analyzed with the Enge split-pole spectrograph. Angular distributions were measured for all three nuclei with special emphasis being placed on L=0 transitions.</p> <p> The angular distributions for the 151Sm(t,p)153Sm reaction showed that the distribution of L=0 strength among the low-lying states is not consistent with expectations based on the detailed wavefunctions for 151Sm and 153Sm calculated by two independent groups; Katajanheimo and Hammaren (1978) and Rekstad et al. (1978). The distributions also showed that the total L=0 strength, summed over the four observed states in 153Sm, is much less than for neighbouring nuclei.</p> <p> Angular distributions of the (t,p) reaction on 176Yb and 178Hf targets showed strong L=0 transitions to levels at ~ 1.3 MeV excitation. It is believed that the N=108 energy gap in the Nilsson diagram is the cause of the large L=0 strength observed. At present no quanitative calculation has reproduced the observed phenomenon, however a calculation based on the Volkov model is presently being considered.</p> |
URI: | http://hdl.handle.net/11375/19880 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Nowikow_Igor_G._1979Mar_Masters..pdf | 1.45 MB | Adobe PDF | View/Open |
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