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The search for the 2+ excitation of the 12C Hoyle state using the 12C(12C,12C[3alpha])12C reaction

Muñoz-Britton, Tomás (2011)
Ph.D. thesis, University of Birmingham.

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Abstract

A search was conducted for the 2\(^+_2\) excitation of the 7.65 MeV, 0\(^+_2\), Hoyle state in \(^{12}\)C using the \(^{12}\)C(\(^{12}\)C, \(^{12}\)C[3α]) \(^{12}\)C reaction. The analysis focussed primarily on the 9.7 MeV region in the \(^{12}\)C excitation energy spectrum and no evidence of a resonance was found. Monte Carlo simulations were used to investigate the minimum strength at which a resonance would need to exist in order to be resolved by the experimental setup used. The possibility was also investigated that the 2\(^+_2\) resonance may be observed in the \(^{12}\)C(\(^{12}\)C, \(^{12}\)C[\(^8\)Be*+α]) \(^{12}\)C reaction channel, though the methods contained within this thesis allowed only limited analysis of reaction channels involving non-zero spin states in the intermediate \(^8\)Be nucleus; no evidence of a resonance was found. Further analysis of the 9.6 MeV and 10 MeV regions of the \(^{12}\)C excitation energy spectrum also revealed no clear sign of a 2\(^+_2\) resonance.

Type of Work:Ph.D. thesis.
Supervisor(s):Freer, Martin
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Physics and Astronomy
Subjects:QC Physics
Institution:University of Birmingham
ID Code:3050
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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