Systematics of carbon- and oxygen-induced fusion on nuclei with <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>12</mn><mi>≤</mi><mi>A</mi><mi>≤</mi><mn>19</mn></math></span>

D. G. Kovar; D. F. Geesaman; T. H. Braid; Y. Eisen; W. Henning; T. R. Ophel; M. Paul; K. E. Rehm; S. J. Sanders; P. Sperr; J. P. Schiffer; S. L. Tabor; S. Vigdor; B. Zeidman; F. W. Prosser, Jr

doi:10.1103/PhysRevC.20.1305

Systematics of carbon- and oxygen-induced fusion on nuclei with $12 \leq A \leq 19$

D. G. Kovar, D. F. Geesaman, T. H. Braid, Y. Eisen, W. Henning, T. R. Ophel, M. Paul, K. E. Rehm, S. J. Sanders, P. Sperr, J. P. Schiffer, S. L. Tabor, S. Vigdor, B. Zeidman, and F. W. Prosser, Jr.

Phys. Rev. C 20, 1305 – Published 1 October 1979

Abstract

Measurements of the total fusion cross sections for ${}^{12}C$ + ${}^{12}C$ , ${}^{13}C$ , ${}^{14}N$ , ${}^{15}N$ , ${}^{16}O$ , ${}^{18}O$ , and ${}^{19}F$ and ${}^{16}O$ + ${}^{16}O$ have been performed over the energy range from 1.5 to 3 times the Coulomb barrier energy. Fusion barrier parameters were extracted for each system. Three systems, ${}^{12}C$ + ${}^{12}C$ , ${}^{12}C$ + ${}^{16}O$ , and ${}^{16}O$ + ${}^{16}O$ , show rather pronounced oscillatory structure in the energy dependence of the fusion cross sections. The maximum fusion cross sections for the systems studied vary by as much as 10-20%, depending on the particular entrance channel. The specific structure of the interacting nuclei clearly does have an effect; the fusion process is not entirely dominated by the macroscopic features of the ion-ion interaction.

NUCLEAR REACTIONS, fusion, measured $σ_{fusion} (E)$ ; ${}^{12}C$ + ${}^{12}C$ , $7.4 <~ E_{c . m .} <~ 31.2$ MeV; ${}^{12}C$ + ${}^{13}C$ , $7.6 <~ E_{c . m .} <~ 24.9$ MeV; ${}^{12}C$ + ${}^{14}N$ , $15.1 <~ E_{c . m .} <~ 24.0$ MeV; ${}^{12}C$ + ${}^{15}N$ , $8.9 <~ E_{c . m .} <~ 26.7$ MeV; ${}^{12}C$ + ${}^{16}O$ , $12.9 <~ E_{c . m .} <~ 27.0$ MeV; ${}^{12}C$ + ${}^{18}O$ , $11.9 <~ E_{c . m .} <~ 28.0$ MeV; ${}^{12}C$ + ${}^{19}F$ , $11.6 <~ E_{c . m .} <~ 27.1$ MeV; ${}^{16}O$ + ${}^{16}O$ , $14.9 <~ E_{c . m .} <~ 36.0$ MeV; deduced fusion barrier parameters.

Received 11 June 1979

DOI:https://doi.org/10.1103/PhysRevC.20.1305

Authors & Affiliations

D. G. Kovar, D. F. Geesaman, T. H. Braid, Y. Eisen^*, W. Henning, T. R. Ophel^†, M. Paul, K. E. Rehm^‡, S. J. Sanders, P. Sperr^§, J. P. Schiffer, S. L. Tabor^∥, S. Vigdor^¶, and B. Zeidman

Argonne National Laboratory, Argonne, Illinois 60439

F. W. Prosser, Jr.

Argonne National Laboratory, Argonne, Illinois 60439 and University of Kansas, Lawrence, Kansas 66045

^*Present address: Israel Atomic Energy Commission, Soreq Nuclear Research Center, Yavne, Israel.
^†Present address: Department of Nuclear Physics, Australian National University, Canberra, Australia.
^‡Present address: Technische Universität München, D-8046 Garching, W. Germany.
^§Present address: Physik-Department, Technische Universität München, D-8046 Garching, W. Germany.
^∥Present address: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742.
^¶Present address: Department of Physics, Indiana University, Bloomington, Indiana 47401.

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Vol. 20, Iss. 4 — October 1979

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