Neutron measurements with lanthanum–bromide scintillation detectors—A first approach

Measurement of high-energy prompt gamma-rays from neutron induced fission of U-235

“…Since the interaction of neutrons with LaBr 3 (Ce) scintillator was well studied in Ref. [10], the events contained in the broad peak would be used to obtain information on prompt-neutrons in the 235 U(n th , f ) reaction in further analysis. The plateau region ( t ≤ −10 ns) is due to time-independent background caused by natural radioactivity including the self-activity of the LaBr 3 (Ce) scintillator, thermal neutrons scattered from various materials the neutron beam passed through, and cosmic rays.…”

Development of a measurement system for the determination of (n,γ) cross-sections using multi-nucleon transfer reactions

“…Here the neutrons are expected to be evaporated from the compound nuclei with E x Z S n because neutron emission is the dominant decay process above the S n . It is known that a LaBr 3 (Ce) scintillator is sensitive to neutrons [28], since the neutron capture cross-section at thermal energy is 11.0 b for 79 Br, 2.4 b for 81 Br, and 8.9 b for 139 La, respectively [29]. When the thermal neutrons are captured by 79 Br, for example, high energy γ-rays up to 7.9 MeV are emitted.…”

“…We measured the γ-rays from the standard γ-ray sources ( 137 Cs, 22 Na, 60 Co and 88 Y) with well-known intensities and the 27 Al(p, γ) 28 Si reaction measured at two resonances of E p ¼992 [35,36] and 2046 keV [37]. These measurements were carried out at the 3. γ-ray spectra obtained in the measurements of the 27 Al(p, γ) 28 Si reaction at E p ¼992 and 2046 keV using the central …”

“…These measurements were carried out at the 3. γ-ray spectra obtained in the measurements of the 27 Al(p, γ) 28 Si reaction at E p ¼992 and 2046 keV using the central …”

New prompt fission gamma-ray spectral data from 239Pu(nth, f) in response to a high priority request from OECD Nuclear Energy Agency

“…LaBr 3 detectors have a timing resolution of about 300 ps [3], which makes them very suited for the time-offlight technique. They also have a better energy resolution than most widely used sodium iodide (NaI) or barium fluoride (BaF 2 ) detectors [4].…”