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- W55403560 abstract "The modification of thermoluminescence TL and photoluminescence PL properties ofK2Ca2SO43 :Eu nanoparticles by swift heavy ions SHI, irradiation is studied. Pellets form of thenanomaterials were irradiated by 48 MeV Li3+, 75 MeV C6+, and 90 MeV O7+ ion beams. Thefluence range is 1109−11013 ions/cm2. The modification in TL glow curves of thenanomaterials irradiated by Li3+, C6+, and O7+ ion beams are essentially similar to those induced by-ray irradiation. These glow curves have single peaks at around 427 K with a small variation intheir positions by around ±3 K. The TL intensity of the ion beams irradiated nanomaterials is foundto decease, while going from low to high atomic number Z ions i.e., Li3+→O7+. The TL responsecurve of the pellets irradiated by Li3+ ions is linear in the whole range of studied fluences. Thecurves for C6+ and O7+ irradiated samples are linear at lower fluences 1109–11012 ion/cm2 and then saturate at higher fluence. These results for the nanomaterials are muchbetter than that of the corresponding microcrystalline samples irradiated with a Li3+ ion. The curveswere linear up to the fluence 11011 ion/cm2 and then become sublinear at higher fluences. TheTL efficiency values of K2Ca2SO43 :Eu nanoparticles irradiated by 48 MeV Li3+, 75 MeV C6+, and90 MeV O7+ ion beams have been measured relative to rays of 60Co and are found to be 0.515,0.069, and 0.019, respectively. This value for the Li3+ ion 0.515 is much higher than that of thecorresponding microcrystalline material 0.0014. These superiorities for the nanomaterials makeK2Ca2SO43 :Eu nanophosphor a suitable candidate for detecting the doses of swift heavy ions. PLstudies on the ion beams irradiated and unirradiated K2Ca2SO43 :Eu nanoparticles show a singleband at 384 nm, which could be assigned to Eu2+ emission, while the microcrystalline form of thismaterial shows emission at 436 nm. This wide blueshift in PL of the nanomaterial could beattributed to the extension of the band gap of Eu2+ due to the absence of crystal field effects." @default.
- W55403560 created "2016-06-24" @default.
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- W55403560 date "2007-01-01" @default.
- W55403560 modified "2023-09-24" @default.
- W55403560 title "الجسيمات النانية لمركب كبريتات البوتاسيوم-الكالسيوم المشوب باليوربيوم ككواشف فعالة للايونات الثقيلة" @default.
- W55403560 hasPublicationYear "2007" @default.
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