The effect of environmental treatment on the track response of the CR-39 plastic detector

The Induced Changes in the Bulk Etch Rate and the Thermal Stability of PADC by the Effect of Long Storing Time at Room Temperature and Heat Treatment

“…The bulk etch rate increases with the increase in the storage time for annealed samples at 100, 150 and 200°C. The general behavior of the bulk etch rate V b versus the annealing temperature and the annealing time agrees with the results of Abou El-Khier et al,1995 and Pinhero Filho et al, 1996…”

“…where, ΔL is the removal thickness, L 1 : is the initial thickness, L 2 : is the final thickness after etching, Δt: is the etching time. [18][19][20]. The rate of increasing the bulk etch rate V b depends strongly on the annealing temperature.…”

Modifications of the registration properties of charged particles in a CR-39 polymeric track detector induced by thermal annealing

“…This experimental evidence may be attributed to a probable rearrangement of the polymer chain spacings, consequently changing the registration properties of the ionizing particles, a-particles and fission fragments, and fast neutrons. Other research groups have also observed the nature of the mechanisms that cause changes in the track etch parameters due to thermal treatment [22][23][24][25][26]. Fig.…”

Identification of spontaneous fission fragments by using thermally annealed PADC films

“…, of thermally annealed CR-39 polymeric detectors, where V B and V T are the bulk and track etch rates, respectively, is enhanced significantly for fission fragments, whereas it is decreased greatly for alpha particles [12,14,20,23]. Additionally, fission tracks formed at an angle less than the critical angle are not revealed because the normal surface advances faster than the etch rate along the track.…”

“…There is a similar concern that mass distribution of spontaneous fission fragments from samples of lime was observed [11]. It should also be noted that nuclear track detectors (NTDs) of polymer, pristine or thermally treated, or glass and mica have already been applied to many studies of the detection of the nuclear fission products and the registration properties of these fission products or lighter particles, e.g., alpha particles in those detectors, as reported by several research groups [12][13][14][15][16][17][18][19][20].…”