Review and new concepts for neutron-capture measurements of astrophysical interest

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    Abstract

    The idea of slow-neutron capture nucleosynthesis formulated in 1957 triggered a tremendous experimental effort in different laboratories worldwide to measure the relevant nuclear physics input quantities, namely (n, γ) cross sections over the stellar temperature range (from few eV up to several hundred keV) for most of the isotopes involved from Fe up to Bi. A brief historical review focused on total energy detectors will be presented to illustrate how advances in instrumentation have led to the assessment of new aspects of s-process nucleosynthesis and to the progressive refinement of stellar models. A summary will be presented on current efforts to develop new detection concepts, such as the Total-Energy Detector with γ-ray imaging capability (i-TED). The latter is based on the simultaneous combination of Compton imaging with neutron time-of-flight (TOF) techniques, in order to achieve a superior level of sensitivity and selectivity in the measurement of stellar neutron capture rates.

    Original languageEnglish
    Article number012013
    JournalJournal of Physics: Conference Series
    Volume1668
    Issue number1
    DOIs
    Publication statusPublished - 21 Oct 2020
    Event9th Nuclear Physics in Astrophysics, NPA 2019 - Frankfurt, Germany
    Duration: 15 Sept 201920 Sept 2019

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