Basic Research and Applications at the 20 UD Tandem Accelerator of Argentina

A. ARAZI, ; D. ABRIOLA, ; M. AVERSA, ; E. DE BARBARÁ, ; J. DE JESÚS, ; E. DE LA FOURNIÈRE, ; M.A. CARDONA, ; M. DEBRAY, ; J. FERNÁNDEZ NIELLO,; T. GIUDICE,; F. GOLLAN, ; D. HOJMAN,; G.V. MARTÍ, ; A.J. PACHECO, ; B. PAES, ; D. RODRIGUES, ; N. SAMSOLO, ; D. SCHNEIDER

Woods Hole, Massachusetts

Simposio; Symposium of Northeastern Accelerator Personnel (SNEAP); 2021

Woods Hole Oceanographic Institution

The TANDAR (TANDem of ARgentina) facility was built by NEC and commissioned in 1985. Since then, it has been operating for basic research on nuclear structure and reaction mechanisms. Later on, several applied research lines have been introduced as well: radiation damage on electronic devices and solar cells, biological cells irradiation, RBS and PIXE analysis, microbeam machining and AMS. In this contribution we will briefly describe: a)Basic research on scattering, transfer, breakup and fusion of stable weakly bound projectile such as 2H, 6,7Li, 9Be and 10B. The detection techniques involve silicon detectors arrays for angular distributions, multiple-E telescopes for particle identification, double-sided silicon strip detectors for exclusive time-coincidence measurements, and offline detection of delayed -rays. b)Particle-Induced X-ray Emission (PIXE) experiments using a 16O microbeam, which provides high-resolution (micrometer) maps of, for e.g., in vivo elemental distribution of U(VI) and Th(IV) in floating aquatic plants studied for water bioremediation processes. The use of heavy ion beams shows significant improvement of the detection limits when analyzing heavy elements. c)Accelerator Mass Spectrometry (AMS) measurements of 10Be/9Be and 236U/238U isotopic ratios. 10Be was separated from its isobar 10B by a passive argon gas cell and identified using a telescope. 236U was separated from its isotopes using a Wien velocity filter and a 6.7-m time-of-flight system.