The mean effective cross sections of 6Li for the (n, u) reaction were calculated for thermal, intermediate and fast neutrons; this reaction is dominant in damage production in LiF crystals. The actual neutron spectrum was determined from measurements of thermal, intermediate and fast neutron fluxes, in the core of the IEA-RI-2MW swimming pool reactor, in high fluence conditions, by the activati...

The use of neutrons for cargo interrogation has the potential to drastically improve threat detection. Previous research has focussed on the production of (24)Na, based on the isotopes produced in pharmaceuticals and medical devices. For both the total activity and the ingestion dose we show that a variety of isotopes contribute and that (24)Na is only dominant under certain conditions. The com...

The neutron irradiation system for boron neutron capture therapy (BNCT) using compact accelerators installed at hospitals was mainly investigated for the usage of direct neutrons from near-threshold Li(p,n)Be, and moderated neutrons from 2.5 MeV Li(p,n)Be reactions and other reactions. This kind of system can supply the medical doctors and patients with convenience to carry out BNCT in hospital...

Capacitance, resistance and current measurements were carried out on single-sided, n + on n silicon strip detectors. We studied the type inversion after irradiating the detectors with neutron fluences up to 8:3 10 13 neutron=cm 2. To understand the macroscopic irradiation effects, a SPICE model of the detector was developed. By modelling the setup of the capacitance measurements, our model was ...

To establish an in vivo radiation carcinogenesis model using glutathione S-transferase placental form positive (GST-P+) hepatic foci, newborn rats were irradiated once by 0.5 Gy and 2 Gy of gamma ray or 0.15 Gy and 0.6 Gy of neutron with or without 0.05% phenobarbital (PB). When the rats were sacrificed at the 12th or 21st week, the incidence of GST-P+ foci induction by radiation alone was very...

The construction of the new German high flux neutron source FRM-II is finished and FRM-II is waiting for its licence to start nuclear operation. With the beginning of the routine operation 22 instruments will be in action, including 5 irradiation facilities and 17 beam tube instruments, most of them use neutron scattering techniques. Additional instruments are under construction. Some of these ...

The most common isotope, plutonium-239, is produced when the most common isotope of uranium, uranium-238, absorbs a neutron and then quickly decays to plutonium. It is this plutonium isotope that is most useful in making nuclear weapons, and it is produced in varying quantities in virtually all operating nuclear reactors. As fuel in a reactor is exposed to longer and longer periods of neutron i...

It is argued that irradiation in low-mass X-ray binaries (LMXBs) caused by accretion-generated X-rays can not only change the optical appearance of LMXBs but also their outburst properties and possibly also their long-term evolution. Irradiation during an outburst of the outer parts of the accretion disc in a transient LMXB leads to drastic changes in the outburst properties. As far as the secu...

The preliminary results of a programme of measurements of the effects of fast neutron irradiation on the performance of the Hamamatsu APDs proposed for the barrel ECAL in CMS are reported.