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Science and Technology of Nuclear Installations
Volume 2013, Article ID 972381, 14 pages
http://dx.doi.org/10.1155/2013/972381
Research Article

Evaluation of and Productions Based on a High-Performance Cyclotron

1INFN, Laboratori Nazionali di Legnaro (LNL), Via dell’Università 2, 35020 Legnaro, Italy
2Dipartimento di Fisica, Università di Ferrara and INFN, Sezione di Ferrara, Via Saragat 1, 44122 Ferrara, Italy
3Dipartimento di Morfologia, Chirurgia e Medicina Sperimentale, Università di Ferrara e INFN, Sezione di Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy

Received 3 June 2013; Revised 26 August 2013; Accepted 27 August 2013

Academic Editor: George Vandegrift

Copyright © 2013 J. Esposito et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Following preliminary feasibility studies which started at Legnaro National Laboratories (LNL) in 2011, the Italian National Institute for Nuclear Physics (INFN) research activities are underway aiming at the alternative, accelerator-driven, production routes. One of the most promising approaches is to use 100Mo-enriched (i.e., >99%) molybdenum metallic targets, bombarded with high-beam-current, high-energy proton cyclotrons. In order to get a comprehensive map of radionuclides expected, a detailed theoretical investigation has been carried out using the TALYS-TENDL 2012 excitation functions extended up to (p,6n), (p,p5n), and (p,2p4n) levels. A series of quality parameters have thus been calculated both at the end of beam (EOB) and at longer times. Results point out that accelerator-99Mo is of limited interest for a possible massive production because of the quite low specific activity with respect to reactor-99Mo. Accelerator- quality parameters (i.e., radionuclidic purity (RNP), isotopic purity (IP), and specific activities) calculated are instead quite close to the generator-Tc. Calculations at 15, 20, and 25 MeV have thus been performed to assess the best operative irradiation condition for production while minimizing both the short-lived and long-lived Tc contaminant radionuclides. Although present in minimum quantities, Tc contaminants may indeed have an impact either on the pharmaceutical labeling procedures or on contributing to patient radiation dose during the diagnostic procedures.