Structure in the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math>+<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Be</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>8</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math>+<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">O</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>16</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> fission width distribution of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Mg</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>24</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> observed via the reaction <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">C</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>12</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">O</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>16</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>,</mo><mi> </mi><mi>α</mi><mo>)</mo><mrow><mmultiscripts><mrow><mi mathvariant="normal">Mg</mi></mrow><mrow></mrow><mrow><mo>*</mo></mrow><mrow></mrow><mrow></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>24</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>→</mo><mi>X</mi><mo>+</mo><mi>Y</mi></math>

A. J. Lazzarini; S. G. Steadman; R. J. Ledoux; A. Sperduto; G. R. Young; K. Van Bibber; E. R. Cosman

doi:10.1103/PhysRevC.27.1550

Structure in the ${}^{12}C$ + ${}^{12}C$ and ${}^{8}{Be}$ + ${}^{16}O$ fission width distribution of ${}^{24}{Mg}$ observed via the reaction ${}^{12}C ({}^{16}O, α) {}^{24}{Mg}^{*} \to X + Y$

A. J. Lazzarini, S. G. Steadman, R. J. Ledoux, A. Sperduto, G. R. Young, K. Van Bibber, and E. R. Cosman

Phys. Rev. C 27, 1550 – Published 1 April 1983

Abstract

Prominent gross and intermediate width structures are observed in the ${}^{12}C$ + ${}^{12}C$ , ${}^{12}C$ + ${}^{12}C$ *( $2^{+}$ ), ${}^{12}C$ *( $2^{+}$ )+ ${}^{12}C$ *( $2^{+}$ ), ${}^{8}{Be}$ + ${}^{16}O$ , and ${}^{8}{Be}$ + ${}^{16}O$ * ( $3^{-}$ , $0^{+}$ ) decay channels following ${}^{24}{Mg}$ * population via the ${}^{12}C ({}^{16}O, α) {}^{24}{Mg}$ reaction at $E_{c . m .} = 33$ MeV. Evidence that the ${}^{12}C ({}^{16}O, α) {}^{24}{Mg}$ reaction populates states in ${}^{24}{Mg}$ which are associated with ${}^{12}C$ + ${}^{12}C$ resonances is presented in the form of correlation analyses between the $α$ + ${}^{12}C$ + ${}^{12}C$ three-body spectra and previously measured ${}^{12}C$ + ${}^{12}C$ elastic and inelastic excitation functions. Direct determination of ${}^{12}C$ + ${}^{12}C$ widths from these measurements is obscured by a background of other strong transitions which appear to be present in the ${}^{12}C ({}^{16}O, α) {}^{24}{Mg}$ singles spectrum.

NUCLEAR REACTIONS ${}^{12}C ({}^{16}O, α) {}^{24}{Mg}^{*} \to X + Y$ ; measured $σ (α X Y)$ three body coincidence, fission widths of states in ${}^{24}{Mg}$ between $E_{x} = 20 and 40$ MeV. Intermediate structure observed.

Received 5 October 1982

DOI:https://doi.org/10.1103/PhysRevC.27.1550

Authors & Affiliations

A. J. Lazzarini^*, S. G. Steadman, R. J. Ledoux, A. Sperduto^†, G. R. Young^‡, K. Van Bibber^§, and E. R. Cosman

Department of Physics and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

^*Present address: Nuclear Physics Laboratory, University of Washington, Seattle, WA 98195.
^†Deceased.
^‡Present address: Oak Ridge National Laboratory, Oak Ridge, TN 37830.
^§Present address: Stanford University, Stanford, CA 94305.

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Vol. 27, Iss. 4 — April 1983

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