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  • 1 Los Alamos National Laboratory 87545 Los Alamos New Mexico USA
  • | 2 Johnson City Internal Medicine Associates 37601 Johnson City TN USA
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This pape discusses the use, of stable Cs as an activatable tracer for measuring performance of plant root intrusion barriers for solid waste disposal site cover systems. Experiments conducted at small-scale demonstrate the effectiveness and practicality of the technique and suggest that the methodology has application to a better understanding of plant root ecology.