Nonresonant Behavior of the Yield of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">Si</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>28</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mn>2</mn></mrow><mrow><mo>+</mo></mrow></msup></mrow></math> (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>E</mi></mrow><mrow><mi>x</mi></mrow></msub></mrow><mo>=</mo><mn>1.78</mn><mn></mn></math> MeV) State via 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">Si</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>28</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math> Reaction

R. Vandenbosch; D. -K. Lock; A. J. Lazzarini; K. Lesko; V. Metag

doi:10.1103/PhysRevLett.46.5

Nonresonant Behavior of the Yield of the ${}^{28}{Si}$ $2^{+}$ ( $E_{x} = 1.78$ MeV) State via the ${}^{12}C$ + ${}^{28}{Si}$ Reaction

R. Vandenbosch, D. -K. Lock, A. J. Lazzarini, K. Lesko, and V. Metag

Phys. Rev. Lett. 46, 5 – Published 5 January 1981

Abstract

$γ$ -ray techniques have been used to measure the total cross section for populating the 1.78-MeV $2^{+}$ state in ${}^{28}{Si}$ via the ${}^{12}C$ + ${}^{28}{Si}$ reaction at $E_{c . m .} = 23 - 35$ MeV. Unlike the highly structured back-angle elastic- and inelastic-scattering excitation functions, the integrated inelastic yield is found to vary smoothly with energy. The absence of structure in the total inelastic cross section does not support a resonance interpretation of the back-angle particle-scattering data.