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

Research output: Contribution to journalArticle


  • 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

Institutes & Expert groups

  • SINP - Saha Institute of Nuclear Physics
  • CERN - Conseil Européen pour la Recherche Nucléaire
  • LMU Munich - Ludwig-Maximilians-Universitat Munchen
  • UTBM - Université de Technologie de Belfort-Montbéliard
  • TRIUMF - Canada's particle accelerator centre

Documents & links


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
Publication statusPublished - 14 Aug 2020


  • Radioisotopes, LBE, CERN, ISOLDE

ID: 7030444