Quantification of radioisotopes produced in 1.4 GeV proton irradiated lead–bismuth eutectic targets

Dibyasree Choudhury, Susante Lahiris, Nabanita Naskar, Melanie Delonca, Thierry Stora, João Pedro Fernandes Pinto Ramos, Elodie Aubert, Alexandre Dorsival, Joachim Vollaire, Ricardo Manuel Dos Santos Augusto, Alfredo Ferrari

    Research outputpeer-review


    Six cylindrical lead bismuth eutectic (LBE) targets having fixed diameter of 6 mm and varying lengths of 8–50 mm were irradiated with a 1.4 GeV proton beam at CERN-ISOLDE. Both short-lived (5 h <T1/2<5 days) and long-lived (T1/2>5 days) radionuclides were identified by off-line γ-spectrometry and their activities at the end of bombardment (EOB) were determined. Total 80 γ-emitting radionuclides, ranging from 7Be to 209At, were identified in the 50 mm long LBE target. The yields of all the radioisotopes were compared with the Monte Carlo Code FLUKA. The spallation reaction was the dominant mode whereas fission induced reactions had no significant contribution. The high energy proton irradiated LBE target may act as a large source of several clinically important and other exotic radionuclides.
    Original languageEnglish
    Pages (from-to)1-15
    Number of pages15
    JournalThe European Physical Journal A
    Issue number204
    StatePublished - 14 Aug 2020

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