Fluorescent nuclear track detectors as criticality dosimeters

摘要: A method of determining radiation exposure during a criticality excursion dosimeter having at least one fluorescent nuclear track detector (FNTD) element includes the power spectrum integral (PSI) value images obtained from FNTD each plurality different depths using laser induced microscopy; normalizing depth profile to shallowest depth; fitting double exponential function normalized profile; median neutron energy E=f(1/e) function; and dose correction factor (NCF) NCF=f(E) function. The dose, D, can then be calculated by dividing absolute neutron-induced PSI sensitivity S multiplying it NCF.