Abstract
A neutron detector by using a metallic high-Tc superconductor MgB2 is based on an idea that an energy released by a nuclear reaction between neutron and 10B leads to an instantaneous destruction of the superconducting state. Neutron can be detected as a voltage pulse caused by an instantaneous nucleated normal region. We investigate how a hot spot caused by a nuclear reaction diffuses in an MgB2 detector both in a non-membrane type detector as well as in a membrane type detector. Numerical simulations of the heat transport equation have been carried out by means of the finite element method. We succeeded in generating a transient pulse signal from the MgB2 detector.
Published Version
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