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|Title:||A new detector system for the measurement of high-energy prompt γ-rays for low-energy neutron induced fission|
|Authors:||MAKII HIROYUKI; NISHIO K.; HIROSE K.; ORLANDI R.; LEGUILLON R.; OGAWA T.; SOLDNER T.; HAMBSCH FRANZ-JOSEF; AICHE MOURAD; ASTIER A.; CZAJKOWSKI SERGE; FROST R.; GUO S.; KÖSTER U.; MATHIEU L.; OHTSUKI T.; PETRACHE C.; POLLITT A.; SEKIMOTO S.; TAKAMIYA K.; TSEKHANOVICH I.|
|Citation:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT vol. 906 p. 88-96|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in periodicals and books|
|Abstract:||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.|
|JRC Directorate:||Nuclear Safety and Security|
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