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Positive pion-nucleus elastic scattering at 30 and 50 MeV

B. M. PreedomUniversity of South Carolina, Columbia, South Carolina 29208Sagar DamUniversity of South Carolina, Columbia, South Carolina 29208C.W. DardenUniversity of South Carolina, Columbia, South Carolina 29208R. D. EdgeUniversity of South Carolina, Columbia, South Carolina 29208D. J. MalbroughUniversity of South Carolina, Columbia, South Carolina 29208Thomas A. MarksUniversity of South Carolina, Columbia, South Carolina 29208R. L. BurmanLos Alamos Scientific Laboratory, Los Alamos, New Mexico 87545Maximilian HammLos Alamos Scientific Laboratory, Los Alamos, New Mexico 87545M. A. MoinesterLos Alamos Scientific Laboratory, Los Alamos, New Mexico 87545R. RedwineLos Alamos Scientific Laboratory, Los Alamos, New Mexico 87545M. A. YatesUniversity of South Carolina, Columbia, South Carolina 29208F. E. BertrandUniversity of South Carolina, Columbia, South Carolina 29208T. P. ClearyOak Ridge National Laboratory, Oak Ridge, Tennessee 37830E. E. GrossOak Ridge National Laboratory, Oak Ridge, Tennessee 37830N. W. HillUniversity of South Carolina, Columbia, South Carolina 29208C.A. LudemannUniversity of South Carolina, Columbia, South Carolina 29208M. BlecherVirginia Polytechnic Institute and State University, Blacksburg, Virginia 24061K. GotowVirginia Polytechnic Institute and State University, Blacksburg, Virginia 24061D. JenkinsVirginia Polytechnic Institute and State University, Blacksburg, Virginia 24061F. L. MilderVirginia Polytechnic Institute and State University, Blacksburg, Virginia 24061

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Annotatsiya

We present measured angular distributions for ${\ensuremath{\pi}}^{+}$-elastic scattering at 30 and 50 MeV from selected targets with $A=12 \mathrm{to} 208$. These angular distributions were analyzed using a phenomenological optical potential of first-order form. The mass dependence of the potential strength parameters displays the isospin dependence expected from the free $\ensuremath{\pi}N$ interaction.NUCLEAR REACTIONS Elastic scattering of 30 and 50 MeV ${\ensuremath{\pi}}^{+}$ from $^{12}\mathrm{C}$, $^{16}\mathrm{O}$, $^{40}\mathrm{Ca}$, $^{90}\mathrm{Zr}$, $^{208}\mathrm{Pb}$. Angular distributions: $25\ifmmode^\circ\else\textdegree\fi{}<{\ensuremath{\theta}}_{\mathrm{LAB}}<160\ifmmode^\circ\else\textdegree\fi{}$. Optical model analysis of cross-section data.

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DOI: 10.1103/physrevc.23.1134

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