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A Particle-γ Coincidence Study of 26Na Using The Transfer Reaction 25Na(d,pγ)26Na.

Celik, Ilker Can. (2014) A Particle-γ Coincidence Study of 26Na Using The Transfer Reaction 25Na(d,pγ)26Na. Doctoral thesis, University of Surrey (United Kingdom)..

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In this thesis, the radioactive beam (RIB) 25Na at 5 MeV/u with an intensity of up to 3 x 107 pps is exploited to study states in 26Na using a 0.5mg/cm2 deuterated polyethylene (CD2) target via the highly selective (d, pγ) transfer reaction. The reaction products are recorded by using both SHARC (the Silicon Highly-segmented Array for Reactions and Coulex) and TIGRESS (The TRIUMF-ISAC Gamma-Ray Escape-Suppressed Spectrometer). The SHARC array is installed at the ISAC-2 facility in TRIUMF (Canada) to study a variety of reactions, but single-particle transfer with a radioactive ion beam is the reaction mechanism of interest here. This experimental study was the first radioactive beam experiment making use of the TIGRESS/SHARC detector set-up in 2009. This work significantly extends an earlier analysis. The motivation of this work is to combine the information extracted from the particle and the y detection in 25Na(d, pγ)26Na reaction data to compare the experimentally observed results and the shell model predictions. A total of 24 states were studied, of which 10 had not been reported previously, and detailed new information was extracted for most of these. Properties measured and discussed include: (1) the observed 7-ray decay branching ratios, (2) the observed spectroscopic factors (population strength) in the (d, p) reaction, (3) the observed angular momentum transfer in the (d, p) reaction, (4) a comparison between experimental and the predicted excitation energies from shell model calculations, (5) spin assignments based on the predicted reaction strengths and observed γ-ray decay scheme, and (6) analogies with the experimentally observed gamma-decay properties of the isotone 28 Al. An extra new feature of this work, for the important interpretation of similar future experiments, is a detailed study of the γ-ray angular distributions and their dependence upon the scattered proton angles in (d,p).

Item Type: Thesis (Doctoral)
Divisions : Theses
Authors : Celik, Ilker Can.
Date : 2014
Additional Information : Thesis (Ph.D.)--University of Surrey (United Kingdom), 2014.
Depositing User : EPrints Services
Date Deposited : 24 Apr 2020 15:26
Last Modified : 24 Apr 2020 15:26

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