Developments for neutron-induced fission at IGISOL-4

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• 作者：D. Gorelov^a ; ^{dmitry.a.gorelov@jyu.fi" class="auth_mail" title="E-mail the corresponding author} ; H. Penttilä ; ^a ; A. Al-Adili^b ; T. Eronen^a ; J. Hakala^a ; A. Jokinen^a ; A. Kankainen^a ; V.S. Kolhinen^a ; J. Koponen^a ; M. Lantz^b ; A. Mattera^b ; I.D. Moore^a ; I. Pohjalainen^a ; S. Pomp^b ; V. Rakopoulos^b ; J. Reinikainen^a ; S. Rinta-Antila^a ; V. Simutkin^a ; A. Solders^b ; A. Voss^a ; J. Ä ; ystö ; ^c
• 关键词：Isotope production ; Neutron-induced fission ; Target and ion source techniques ; Low-energy separators ; Ion guide
• 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
• 出版年：2016
• 出版时间：1 June 2016
• 年：2016
• 卷：376
• 期：Complete
• 页码：46-51
• 全文大小：921 K

文摘

At the IGISOL-4 facility, neutron-rich, medium mass nuclei have usually been produced via charged particle-induced fission of natural uranium and thorium. Neutron-induced fission is expected to have a higher production cross section of the most neutron-rich species. Development of a neutron source along with a new ion guide continues to be one of the major goals since the commissioning of IGISOL-4. Neutron intensities at different angles from a beryllium neutron source have been measured in an on-line experiment with a 30 MeV proton beam. Recently, the new ion guide coupled to the neutron source has been tested as well. Details of the neutron source and ion guide design together with preliminary results from the first neutron-induced fission experiment at IGISOL-4 are presented in this report.