@article{oai:repo.qst.go.jp:00049014,
 author = {遠藤, 暁 and 佐藤, 斉 and takuro, shimazaki and kotani, kei and 須田, 充 and 濱野, 毅 and 梶本, 剛 and 田中, 憲一 and 星, 正治 and 遠藤 暁 and 佐藤 斉 and 須田 充 and 濱野 毅 and 梶本 剛 and 田中 憲一 and 星 正治},
 issue = {3},
 journal = {Radiat Environ Biophys},
 month = {Jul},
 note = {An LBO (Li2B4O7) walled ionization chamber
was designed to monitor the epithermal neutron fluence in
boron neutron capture therapy clinical irradiation. The
thermal and epithermal neutron sensitivities of the device
were evaluated using accelerator neutrons from the 9Be(d,
n) reaction at a deuteron energy of 4 MeV (4 MeV d-Be
neutrons). The response of the chamber in terms of the
electric charge induced in the LBO chamber was compared
with the thermal and epithermal neutron fluences measured
using the gold-foil activation method. The thermal and
epithermal neutron sensitivities obtained were expressed in
units of pC cm2, i.e., from the chamber response divided by
neutron fluence (cm-2). The measured LBO chamber
sensitivities were 2.23 9 10-7 ± 0.34 9 10-7 (pC cm2)
for thermal neutrons and 2.00 9 10-5 ± 0.12 9 10-5
(pC cm2) for epithermal neutrons. This shows that the LBO
chamber is sufficiently sensitive to epithermal neutrons to
be useful for epithermal neutron monitoring in BNCT
irradiation.},
 pages = {269--276},
 title = {Determination of the thermal and epithermal neutron sensitivities of an LBO chamber},
 volume = {56},
 year = {2017}
}