Status of independent yield measurements

Denschlag, H. O.

doi:10.1007/bf02041515

Cited by 4 publications

(1 citation statement)

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“…The fission yields are typically measured by one of three methods: (1) direct high-resolution γ-ray spectroscopy, (2) radiochemical separation of the fission products followed by β and γ-ray counting, and (3) mass separation using of the socalled inverse kinematics of stopped and unstopped techniques. The last technique is used more for extracting the independent FPYs however, even the accurate determination of the compound nucleus composition is rather difficult due to the complexity of the excitation process of the nuclide [5]. Hence, direct measurements of independent yields are very limited in energy, fissioning system and resolution of the fragment mass and charge distributions.…”

Section: Fission Product-yield Measurementsmentioning

confidence: 99%

Toward short-lived and energy-dependent fission product yields from neutron-induced fission

et al. 2020

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Fission product yields (FPYs) are an important source of information that are used for basic and applied physics. They are essential observables to address questions relevant to nucleosynthesis in the cosmos that created the elements from iron to uranium, for example, in energy generating processes from fission recycling in binary neutron star mergers; resolving the reactor neutrino anomaly; decay heat release in nuclear reactors; and many national security applications. While new applications will require accurate energy-dependent FPY data over a broad set of incident neutron energies, the current evaluated FPY data files contain only three energy points: thermal, fast, and 14-MeV incident energies. Recent measurements using mono-energetic and pulsed neutron beams at the Triangle Universities Nuclear Laboratory (TUNL) tandem accelerator and employing a dual fission ionization chambers setup have produced self-consistent, high-precision data critical for testing fission models for the neutron-induced fission of the major actinide nuclei. This paper will present new campaign just beginning utilizing a RApid Belt-driven Irradiated Target Transfer System (RABITTS) to measure shorter-lived fission products and the time dependence of fission yields, expanding the measurements from cumulative towards independent fission yields.

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Section: Fission Product-yield Measurementsmentioning

confidence: 99%