Details

Autor(en) / Beteiligte

• Makii, H.
• Nishio, K.
• Hirose, K.
• Orlandi, R.
• Léguillon, R.
• Ogawa, T.
• Soldner, T.
• Hambsch, F.-J.
• Aïche, 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.

Titel

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

Ist Teil von

• Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2018-10, Vol.906, p.88-96

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We have developed a new setup to measure prompt fission γ-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 γ rays. The setup was used to obtain the prompt fission γ-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 γ-ray spectrum up to energies of about 20 MeV, what extends the currently known γ-ray spectrum limit to higher energies by approximately a factor of two.