MAKII, H.; NISHIO, K.; HIROSE, K.; ORLANDI, R.; LEGUILLON, R.; OGAWA, T.; SOLDNER, T.; HAMBSCH, F.-J.; AICHE, M.; ASTIER, A.; CZAJKOWSKI, S.; FROST, R.; GUO, S.; KÖSTER, U.; MATHIEU, L.; OHTSUKI, T.; PETRACHE, C.M.; POLLITT, A.; SEKIMOTO, S.; TAKAMIYA, K.; TSEKHANOVICH, I.

doi:10.1016/j.nima.2018.07.055

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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2018, vol. 906, p. 88-96

Elsevier

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We have developed a new setup to measure prompt fission -ray spectra in neutron induced fission up to energies sufficient to reveal the structure associated with giant dipole resonances of fission fragments. The setup consists of multi-wire proportional counters, to detect both fission fragments in coincidence, and two large volume (101.6 mm in diameter and 127.0 mm in length) LaBr3(Ce) scintillators, to measure the rays. The setup was used to obtain the prompt fission -ray spectrum for thermal neutron induced fission of 235U at the PF1B cold-neutron beam facility of the Institut Laue-Langevin, Grenoble, France. We have successfully measured the -ray spectrum up to energies of about 20 MeV, what extends the currently known -ray spectrum limit to higher energies by approximately a factor of two.< Leer menos

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A new detector system for the measurement of high-energy prompt γ -rays for low-energy neutron induced fission

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