Measurement of Response Functions of a Liquid Organic Scintillator for Neutrons up to 800 MeV

Abstract

Response functions of a BC501A liquid organic scintillator for neutrons up to 800 MeV have been measured at the heavy-ion accelerator of the National Institute of Radiological Sciences, Japan. A thick graphite target was bombarded with 400-MeV/u C ions and 800-MeV/u Si ions to produce high-energy neutrons whose kinetic energy was determined by the time-of-flight method. The measured response functions were compared with the results obtained using SCINFUL-QMD code, and the accuracy of the code was experimentally verified up to 800 MeV. This work will contribute to extending the energies measurable with our new radiation dose-monitoring system (DARWIN), which is based on the BC501A scintillator.

Reevaluation of secondary neutron spectra from thick targets upon heavy-ion bombardment

“…Now, a new Monte-Carlo code, SCINFUL-QMD [9] is available. This code can be used for estimation of the neutron-detection efficiency in the energy region from 0.1 MeV to 3 GeV, and its accuracy up to 800 MeV has been validated experimentally [10].…”

Calibration of a Bonner sphere spectrometer in quasi-monoenergetic neutron fields of 244 and 387 MeV

“…The neutron detection efficiencies of the NE213 scintillators were calculated using the SCINFUL-QMD code [30], which extends the earlier developed SCINFUL code (SCINtillator FULl response) [31] by a quantum molecular dynamics (QMD) model. Calculated NE213 responses were also compared to experimental data and good agreement was found [32]. Nonetheless, uncertainties due to calculated NE213 responses imply a systematic uncertainty of 15% for the TOF data [21].…”

Neutron production in deuteron-induced reactions on Li, Be, and C at an incident energy of 102 MeV

“…The neutron detection efficiencies were calculated with the SCINFUL-QMD code [16,17] Finally, both the DDXs measured at 7 m and 17 m were merged at 15 MeV.…”