<span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>6</mn><mi>α</mi></math></span> particle emission in the reaction <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow></mrow><mrow><mn>13</mn></mrow></msup></mrow><mi mathvariant="normal">N</mi><mrow><msup><mrow><mo>+</mo></mrow><mrow><mn>11</mn></mrow></msup></mrow><mi mathvariant="normal">B</mi></math></span>

A. Di Pietro; F. Amorini; W. Bradfield-Smith; G. Cardella; T. Davinson; P. Figuera; W. Galster; R. Irvine; P. Leleux; J. Mackenzie; A. Musumarra; R. Neal; A. Ninane; G. Pappalardo; F. Rizzo; A. C. Shotter; C. Sükösd; S. Tudisco

doi:10.1103/PhysRevC.59.1185

$6 α$ particle emission in the reaction $^{13} N +^{11} B$

A. Di Pietro, F. Amorini, W. Bradfield-Smith, G. Cardella, T. Davinson, P. Figuera, W. Galster, R. Irvine, P. Leleux, J. Mackenzie, A. Musumarra, R. Neal, A. Ninane, G. Pappalardo, F. Rizzo, A. C. Shotter, C. Sükösd, and S. Tudisco

Phys. Rev. C 59, 1185 – Published 1 February 1999

Abstract

The six- $α$ decay of $^{24} Mg$ has been studied via the reaction $^{13} N +^{11} B$ at two beam energies, 29.5 MeV and 45 MeV. Large detector arrays allowed this reaction to be studied with low intensity radioactive $^{13} N$ beam. The excitation energy in the $^{24} {Mg}^{*}$ was in the region of the 46 MeV resonance in $^{12} C +^{12} C$ scattering. From the six- $α$ particles, events of interest were selected by associating two of the $α$ particle pairs as the decay products of $^{8} Be .$ The c.m. energy spectra for two $^{8} Be + two α$ events have been extracted. The analysis revealed that most of these events originate from $^{12} C_{3_{1}^{-}} +^{12} C_{3_{1}^{-}} .$ The total cross section for these six- $α$ events has been extracted at the two beam energies.

Received 1 July 1998

DOI:https://doi.org/10.1103/PhysRevC.59.1185

Authors & Affiliations

A. Di Pietro¹, F. Amorini^2,3, W. Bradfield-Smith¹, G. Cardella^3,4, T. Davinson¹, P. Figuera³, W. Galster⁵, R. Irvine¹, P. Leleux⁵, J. Mackenzie¹, A. Musumarra^2,3,*, R. Neal¹, A. Ninane⁵, G. Pappalardo^2,3, F. Rizzo^2,3, A. C. Shotter¹, C. Sükösd⁶, and S. Tudisco^2,3

¹Department of Physics and Astronomy, University of Edinburgh, Edinburgh. EH9 3JZ, United Kingdom
²Dipartimento di Fisica, Universitá di Catania, Corso Italia 57, I-95129 Catania, Italy
³INFN - Laboratorio Nazionale del Sud, via S.Sofia 44, I-95123 Catania, Italy
⁴INFN - Sezione di Catania, Corso Italia 57, I-95129 Catania, Italy
⁵Institut de Physique Nucléaire, Centre de Recherches du Cyclotron, Université Catholique de Louvain, B-1348 Louvain la Neuve, Belgium
⁶Department of Physics, University of Budapest, Budapest, Hungary

^*Present address: Institut de Physique Nucléaire, Center de Recherches du Cyclotron, Université Catholique de Louvain, B-1348 Louvain la Neuve, Belgium.

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Vol. 59, Iss. 2 — February 1999

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