Effects of gamma-irradiation on the dielectric properties of the barium salt of 12-tungstophosphoric acid hydrate
Нема приказа
Аутори
Cajkovski, TDavidović, Milorad P.
Cajkovski, D
Likar-Smiljanic, V
Biljic, R
Mioč, Ubavka B.
Todorović, M
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
The main aim of this paper is to investigate the effects of gamma-irradiation on dielectric properties of barium salt of 12-tungstophosphoric acid (WPA) hydrate BaHPW12O40-7H(2)O (BaHWPA(.)7). Irradiation was carried out with two doses. Permittivity measurements have been performed in microwave X-band, at room temperature. After the irradiation (the absorbed dose 940 kGy) visible effect is the slight yellow color of the specimen and both real part epsilon and imaginary p I art epsilon of permittivity curves are shifted along the frequency axis. By measuring permittivity several days in succession gradual recovery of the specimen was observed. After five days epsilon and epsilon curves returned to their initial values on the frequency axis, and the color also disappeared. The second irradiation of the same specimen (1880 kGy) resulted in somewhat larger shift of epsilon and epsilon towards lower frequencies. This time, with larger absorbed dose there was no recovery effect and no-colora...tion. IR spectra of unirradiated and irradiated specimens were recorded and obtained data used for explanation of the observed phenomena.
Кључне речи:
dielectric relaxation in microwave X-band / heteropolyacid salt / gamma-irradiationИзвор:
Materials Science Forum, 2003, 413, 141-145Напомена:
- 4th Yugoslav-Materials-Research-Society Conference, Sep 10-14, 2001, Herceg Novi, Yugoslavia
Колекције
Институција/група
VinčaTY - JOUR AU - Cajkovski, T AU - Davidović, Milorad P. AU - Cajkovski, D AU - Likar-Smiljanic, V AU - Biljic, R AU - Mioč, Ubavka B. AU - Todorović, M PY - 2003 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6349 AB - The main aim of this paper is to investigate the effects of gamma-irradiation on dielectric properties of barium salt of 12-tungstophosphoric acid (WPA) hydrate BaHPW12O40-7H(2)O (BaHWPA(.)7). Irradiation was carried out with two doses. Permittivity measurements have been performed in microwave X-band, at room temperature. After the irradiation (the absorbed dose 940 kGy) visible effect is the slight yellow color of the specimen and both real part epsilon and imaginary p I art epsilon of permittivity curves are shifted along the frequency axis. By measuring permittivity several days in succession gradual recovery of the specimen was observed. After five days epsilon and epsilon curves returned to their initial values on the frequency axis, and the color also disappeared. The second irradiation of the same specimen (1880 kGy) resulted in somewhat larger shift of epsilon and epsilon towards lower frequencies. This time, with larger absorbed dose there was no recovery effect and no-coloration. IR spectra of unirradiated and irradiated specimens were recorded and obtained data used for explanation of the observed phenomena. T2 - Materials Science Forum T1 - Effects of gamma-irradiation on the dielectric properties of the barium salt of 12-tungstophosphoric acid hydrate VL - 413 SP - 141 EP - 145 UR - https://hdl.handle.net/21.15107/rcub_vinar_6349 ER -
@article{ author = "Cajkovski, T and Davidović, Milorad P. and Cajkovski, D and Likar-Smiljanic, V and Biljic, R and Mioč, Ubavka B. and Todorović, M", year = "2003", abstract = "The main aim of this paper is to investigate the effects of gamma-irradiation on dielectric properties of barium salt of 12-tungstophosphoric acid (WPA) hydrate BaHPW12O40-7H(2)O (BaHWPA(.)7). Irradiation was carried out with two doses. Permittivity measurements have been performed in microwave X-band, at room temperature. After the irradiation (the absorbed dose 940 kGy) visible effect is the slight yellow color of the specimen and both real part epsilon and imaginary p I art epsilon of permittivity curves are shifted along the frequency axis. By measuring permittivity several days in succession gradual recovery of the specimen was observed. After five days epsilon and epsilon curves returned to their initial values on the frequency axis, and the color also disappeared. The second irradiation of the same specimen (1880 kGy) resulted in somewhat larger shift of epsilon and epsilon towards lower frequencies. This time, with larger absorbed dose there was no recovery effect and no-coloration. IR spectra of unirradiated and irradiated specimens were recorded and obtained data used for explanation of the observed phenomena.", journal = "Materials Science Forum", title = "Effects of gamma-irradiation on the dielectric properties of the barium salt of 12-tungstophosphoric acid hydrate", volume = "413", pages = "141-145", url = "https://hdl.handle.net/21.15107/rcub_vinar_6349" }
Cajkovski, T., Davidović, M. P., Cajkovski, D., Likar-Smiljanic, V., Biljic, R., Mioč, U. B.,& Todorović, M.. (2003). Effects of gamma-irradiation on the dielectric properties of the barium salt of 12-tungstophosphoric acid hydrate. in Materials Science Forum, 413, 141-145. https://hdl.handle.net/21.15107/rcub_vinar_6349
Cajkovski T, Davidović MP, Cajkovski D, Likar-Smiljanic V, Biljic R, Mioč UB, Todorović M. Effects of gamma-irradiation on the dielectric properties of the barium salt of 12-tungstophosphoric acid hydrate. in Materials Science Forum. 2003;413:141-145. https://hdl.handle.net/21.15107/rcub_vinar_6349 .
Cajkovski, T, Davidović, Milorad P., Cajkovski, D, Likar-Smiljanic, V, Biljic, R, Mioč, Ubavka B., Todorović, M, "Effects of gamma-irradiation on the dielectric properties of the barium salt of 12-tungstophosphoric acid hydrate" in Materials Science Forum, 413 (2003):141-145, https://hdl.handle.net/21.15107/rcub_vinar_6349 .