Artículos de revistas
Thickness Alterations Of Cr-39 Plastic Detectors Due To The Heating Influence: Basic Theory And Experimental Results
Registro en:
Radiation Measurements. , v. 50, n. , p. 87 - 91, 2013.
13504487
10.1016/j.radmeas.2012.07.014
2-s2.0-84877708966
Autor
Rana M.A.
Guedes S.
Iqbal M.
Institución
Resumen
Heating experiments were conducted on CR-39 polymer/plastic detector samples at temperatures between 50 and 175 °C for various time intervals from 5 to 210 min to investigate the thermal behavior of detector material. Mass and thickness of un-heated and heated polymer samples were measured. Three distinct regimes have been observed showing different degrees of changes in thickness and mass of annealed samples. The percent change of thickness was considerably higher than the mass change during heating. Thermodynamic concepts are used to explain the experimentally observed heating regimes. Role of the difference between free energies of lateral and fold surfaces in detector thickening during heating is discussed. Scanning electron microscopy (SEM) was carried out on un-heated and heated CR-39 samples to examine the surface alterations due to heating. Results are useful for researchers who employ track detectors for radiation measurements in nuclear reactors and cosmic rays. They are also interesting for researchers in related fields, like fission track dating, which consider the thermal history of track recording materials. Our quantitative data and SEM imaging suggests that structural changes, especially surface changes in CR-39 polymer are very important and need to be explored carefully through joint SEM and the Atomic Force Microscopy (AFM). © 2012 Elsevier Ltd. All rights reserved. 50
87 91 Bitensky, I., Brinkmalm, G., Demirev, P., Eriksson, J., Hkansson, P., Papaléo, R., Sundqvist, B.U.R., Zubarev, R., Plasma desorption mass spectrometry in studies of formation and sputtering of fullerenes by MeV atomic ions (1994) Int. J. Mass. Spectrom. Ion Process., 138, pp. 221-239 Callahan, J.H., McElvany, S.W., Ross, M.M., Tandem mass spectrometry studies of oxygen interactions with fullerenes and metallofullerenes (1994) Int. J. Mass. Spectrom. Ion Process., 138, pp. 221-239 Gallagher, K., Brown, R., Johnson, C., Fission track analysis and its applications to geological problems (1998) Annu. Rev. Earth Planet. Sci., 26, pp. 519-572 Guedes, S., Hadler, J.C.N., Oliveira, N.K.M.G., Moreira, P.A.F.P., Iunes, P.J., Tello, C.A.S., Kinetic model for the annealing of fission tracks in minerals and its application to apatite (2006) Radiat. Meas., 41, pp. 392-398 Gupta, A.K., Ayyub, P., Formation of nitrogen-substituted carbon cluster anions by gas-feed Cs-sputtering from different forms of carbon (2001) Europ. Physic. J. D: At. Mol. Opt. Plasma Phys., 17, pp. 221-229 Jonckheere, R., On the densities of etchable fission tracks in a mineral and co-irradiated external detector with reference to fission-track dating of minerals (2003) Chem. Geol., 200, pp. 41-58 Laslett, G.M., Green, P.F., Duddy, I.R., Gleadow, A.J.W., Thermal annealing of fission tracks in apatite: 2. A quantitative analysis (1987) Chem. Geol., 65, pp. 1-13 Lauritzen, J.I., Hoffman, J.D., Extension of theory of growth of chain-folded polymer crystals to large undercoolings (1973) J. Appl. Phys., 44, pp. 4340-4352 Ogura, K., Yanagie, H., Eriguchi, M., Lehmann, E.H., Kühne, G., Bayon, G., Kobayashi, H., Neutron capture autoradiography study of the biodistribution of 10B in tumor bearing mice (2004) Appl. Radiat. Isot., 61, pp. 585-590 Panteliou, S., Thermodynamic damping in porous materials with ellipsoidal cavities (1997) J. Sound and Vibrat., 201, pp. 555-565 Panteliou, S.D., Dimarogonas, A.D., Damping associated with porosity and crack in solids (2000) Theor. Appl. Fract. Mech., 34, pp. 217-223 Papaléo, R.M., Hallén, Eriksson, Brinkmalm, G., Demirev, P., Håkansson, Sundqvist, B.U.R., Damaging of C60 films by MeV heavy ions (1994) Nucl. Instrum. Methods B, 91, pp. 124-128 Price, P.B., Gerbier, G., Park, H.S., Salamon, M.H., Systematics of annealing of tracks of relativistic nuclei in phosphate glass detectors (1987) Nucl. Instrum. Methods B, 28, pp. 53-55 Rama, M.A., On the long standing question of nuclear track etch induction time: Surface-cap model (2008) Nucl. Instrum. Methods B, 266, pp. 271-276 Rana, M.A., A model for annealing of nuclear tracks in solids (2007) Radiat. Meas., 42, pp. 317-322 Rana, M.A., Formation of charged particle tracks in solids (2006) Chin. Phys. Lett., 23, pp. 1448-1451 Rana, M.A., Osipowicz, T., Choi, H.W., Breese, M.B.H., Chua, S.J., A study of the material loss and other processes involved during annealing of GaN at growth temperatures (2003) Chem. Phys. Lett., 380, pp. 105-110 Rana, M.A., Qureshi, I.E., Khan, E.U., Manzoor, S., Shahzad, M.I., Sher, G., Activation energy for the annealing of nuclear tracks in SSNTDS (2001) Nucl. Instrum. Methods B, 179, pp. 249-254 Rana, M.A., Qureshi, I.E., Khan, E.U., Manzoor, S., Shahzad, M.I., Khan, H.A., Thermal annealing of fission fragment radiation damage in CR-39 (2000) Nucl. Instrum. Methods B, 170, pp. 149-155 Sanchez, I.C., Peterlin, A., Eby, R.K., McCrackin, F.L., Theory of polymer crystal thickening during annealing (1974) J. Appl. Phys., 45, pp. 4216-4219 Saffarini, G., Dwaikat, N., El-Hasan, M., Sato, F., Kato, Y., Iida, T., The effect of infrared laser on the activation energy of CR-39 polymeric detector (2012) Nucl. Instrum. Methods A, 680, pp. 82-85 Sanchez, I.C., Colson, J.P., Eby, R.K., Theory and observations of polymer crystal thickening (1973) J. Appl. Phys., 44, pp. 4332-4339 Smilgys, B., Guedes, S., Hadler, J.C., Coelho, P.R.P., Alencar, I., Soares, C.J., Salim, L.A., Manufacturing of boron thin films for the measurement of the 10B(n,α)7Li reaction in BNCT (2011) Proc. Sci., , XXXIV BWNP, article 35 Smilgys, B., Guedes, S., Morales, M., Alvarez, F., Hadler, J.C., Coelho, P.R.P., Siqueira, P.T.D., Curvo, E.A.C., Boron thin films and CR-39 detectors in BNCT: A method to measure the 10B(n, α)7Li reaction rate (2013) Radiat. Meas, 50, pp. 181-186 Wyllie, G.A.P., (1970) Elementary Statistical Mechanics, , Hutchinson & Co Ltd Westphal, A.J., Price, P.B., Weaver, B.A., Afanasiev, V.G., Evidence against stellar chromospheric origin of galactic cosmic rays (1998) Nature, 396, pp. 50-52