The effect of pre-gamma irradiation on track density, bulk etch rate and light absorbance in CR-39 was investigated. CR-39 detectors were irradiated with gamma doses over a range of 0 to 280 kGy (0 to 28 Mrad). The detectors were overlaid with 0.77 mm of polyethylene and exposed to a known fluence of 252Cf spontaneous fission neutrons. All detectors were then etched in 6.25N sodium hydroxide so...

The recently developed code FREYA (Fission Reaction Event Yield Algorithm) generates large samples of complete fission events, consisting of two receding product nuclei as well as a number of neutrons and photons, all with complete kinematic information. Thus it is possible to calculate arbitrary correlation observables whose behavior may provide unique insight into the fission process. We firs...

We present the responses of a NaI(Tl) crystal in terms light yield and pulse shape characteristics nuclear recoil events at two different temperatures: 22 C (room temperature) -35 (low temperature). The is measured using 59.54 keV gamma-rays 241Am source relative to mean charge single photoelectrons. At low temperature, we measure 4.7 +/- 1.3% increase compared that room temperature. A signific...