beta-Irradiated thermoluminescence response of nanocrystalline YAGG: Pr3+ for radiation dosimetry
Por:
Sengar, Prakhar, Borbon-Nunez, H. A., Salas-Juarez, Ch. J., Aguilar, E. M., Cruz-Vazquez, C., Bernal, R., Hirata, G. A.
Publicada:
1 jun 2017
Resumen:
Garnet type Y2.99Al5-xGaxO12:0.01Pr(3+) (YAGG:Pr3+) nanocrystals with
varying Ga concentration (x= 0, 1, 2.5, 4) were synthesized by
combustion synthesis. X-ray diffraction revealed highly crystalline
structure with an increase in the lattice parameter and distortion of
the cubic crystal upon Ga incorporation. XPS results demonstrated the
presence of desired compositional elements and the substitution of Ga at
the Al site. Thermoluminescence glow curves exhibit complex shapes
comprising of four main peaks with a shift in the peak maxima and
decreasing sensitivity from x=0-4. Ga incorporation altered the
distribution of trap levels enhancing the dose-response behavior of the
samples. The reproducibility studies displayed that the nanophosphors
are reusable with minimal changes in the TL output. The results indicate
the potential of YAGG:Pr3+ for dosimetry applications. 2017 Elsevier
Ltd. All rights reserved.
Filiaciones:
Sengar, Prakhar:
Ctr Invest Cientif & Educ Super Ensenada Carreter, Postgrad Fis Mat, Tijuana 3918, Ensenada 22860, Baja California, Mexico
UNAM, Ctr Nanociencias & Nanotecnol, Km 107 Carretera Tijuana Ensenada, Ensenada 22860, Baja California, Mexico
Borbon-Nunez, H. A.:
UNAM, Ctr Nanociencias & Nanotecnol, CONACyT, Km 107 Carretera Tijuana Ensenada, Ensenada 22860, Baja California, Mexico
Salas-Juarez, Ch. J.:
Univ Sonora, Dept Invest Polimeros & Mat, Apartado Postal 130, Hermosillo 83000, Sonora, Mexico
Aguilar, E. M.:
Ctr Invest Cientif & Educ Super Ensenada Carreter, Postgrad Fis Mat, Tijuana 3918, Ensenada 22860, Baja California, Mexico
Cruz-Vazquez, C.:
Univ Sonora, Dept Invest Polimeros & Mat, Apartado Postal 130, Hermosillo 83000, Sonora, Mexico
Bernal, R.:
Univ Sonora, Dept Invest Fis, Apartado Postal 5-088, Hermosillo 83000, Sonora, Mexico
Hirata, G. A.:
UNAM, Ctr Nanociencias & Nanotecnol, Km 107 Carretera Tijuana Ensenada, Ensenada 22860, Baja California, Mexico
|