Radiation induced modifications on structural and luminescence properties of LDPE-Na2SO4:Sm3+ composites by gamma-ray

	Radiation induced modifications on structural and luminescence properties of LDPE-Na2SO4:Sm3+ composites by gamma-ray
	张静(正); Abu Zayed Mohammad Saliqur Rahman; Yang J(杨静); Wu YR(吴亚茹); Cao XZ(曹兴忠); Yu RS(于润升); Wang BY(王宝义); Zhang, J; Rahman, AMS; Li, YX
刊名	OPTICAL MATERIALS
	2015
卷号	42 页码:251-255
关键词	Composite material Gamma irradiation Luminescence Free volume Sm2+
通讯作者	曹兴忠
英文摘要	A comparative study on the morphology, structure and luminescence modifications of LDPE-Na2SO4: Sm3+ composite induced by gamma irradiation was reported for the first time. The composites were irradiated with irradiation doses of 10, 30, and 50 kGy in air at room temperature. Modifications on structural and luminescence properties of LDPE-Na2SO4:Sm3+ composites were investigated by using several analytical methods. The X-ray diffraction (XRD) patterns revealed that the cross-linking improved the crystallinity of the composites. Scanning electron microscope (SEM) images illustrated the surface modifications of composites induced by irradiation. Results of positron annihilation lifetime spectroscopy (PALS) suggested that gamma irradiation affected the free volumes concentrations in the samples. The photoluminescence (PL) spectra of non-irradiated and irradiated composites consisted of four main peaks at 563, 598, 644 and 706 nm which could be assigned to the (4)G(5/2) -> H-6(J)(J = 5/2, 7/2,9/2 and 11/2, respectively) transitions within the 4f(5) electronic configuration of Sm3+. Meanwhile, we observed an additional peak at about 686 nm in the irradiated composites, owing to the conversion of Sm3+-> Sm2+. Concentrations of the Sm2+ centers linearly increased with gamma irradiation doses, which partly accounted for the degradation of PL intensity of Sm3+ peaks. (C) 2015 Elsevier B.V. All rights reserved.
学科主题	Materials Science; Optics
类目[WOS]	Materials Science, Multidisciplinary ; Optics
收录类别	SCI ; EI ; CA
WOS记录号	WOS:000351800300041
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228364]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Zhang J,Abu Zayed Mohammad Saliqur Rahman,Yang J,et al. Radiation induced modifications on structural and luminescence properties of LDPE-Na2SO4:Sm3+ composites by gamma-ray[J]. OPTICAL MATERIALS,2015,42:251-255.
APA	张静.,Abu Zayed Mohammad Saliqur Rahman.,杨静.,吴亚茹.,曹兴忠.,...&Wang, BY.(2015).Radiation induced modifications on structural and luminescence properties of LDPE-Na2SO4:Sm3+ composites by gamma-ray.OPTICAL MATERIALS,42,251-255.
MLA	张静,et al."Radiation induced modifications on structural and luminescence properties of LDPE-Na2SO4:Sm3+ composites by gamma-ray".OPTICAL MATERIALS 42(2015):251-255.