Investigation of the excitation spectrum of [superscript8]He via deuteron inelastic scattering

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dc.contributor.advisor Kanungo, Rituparna
dc.creator Singh, Gurmukh
dc.date.accessioned 2024-02-06T18:45:32Z
dc.date.available 2024-02-06T18:45:32Z
dc.date.issued 2023-12-12
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/31884
dc.description 1 online resource (xi, 83, 1 unnumbered pages) : colour illustrations, charts (chiefly colour), graphs (chiefly colour)
dc.description Includes abstract.
dc.description Includes bibliographical references (pages 78-83).
dc.description.abstract <p>Halo nuclei form due to weak binding at extreme proton-neutron asymmetries near driplines and these uncovered alterations in nuclear shell structure. These halos can exhibit a phenomenon known as a soft dipole resonance. It was postulated that 2<sup>+</sup> state of <sup>8</sup>He may be a mixed with lowlying soft dipole resonance state but it is an unsettled issue. In this work, the deuteron inelastic scattering off a neutron halo nucleus, <sup>8</sup>He, has been studied in inverse kinematics at the IRIS facility at TRIUMF. This study presents findings of first excited state at E = 3.57 &plusmn; 0.02 MeV with resonance width of 0.64 &plusmn; 0.06 MeV along with the ground state. The possibility of absence of low-energy soft dipole resonance in the extracted excitation spectrum might be due to the stronger binding of <sup>8</sup>He. There is also no intruder s-orbital known in <sup>8</sup>He which can allow L=1 particle-hole excitation.</p> en_CA
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dc.language.iso en en_CA
dc.publisher Halifax, N.S. : Saint Mary`s University
dc.subject.lcsh Deuterons -- Inelastic scattering
dc.subject.lcsh Spectrum analysis
dc.title Investigation of the excitation spectrum of [superscript8]He via deuteron inelastic scattering en_CA
dc.type Text en_CA
thesis.degree.name Master of Science in Applied Science
thesis.degree.level Masters
thesis.degree.discipline Astronomy and Physics
thesis.degree.grantor Saint Mary`s University (Halifax, N.S.)
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