CAS OpenIR  > 中科院上海原子核所2003年前
Effects of composition and external electric field on positronium formation in a polymer blend system
Kobayashi, Y; Wang, CL; Hirata, K; Zheng, W; Zhang, C
1998
Source PublicationPHYSICAL REVIEW B
ISSN1098-0121
Volume58Issue:9Pages:5384
AbstractPositron lifetime measurements were carried out for polymer blends between polyethylene and ethylene vinyl acetate copolymer (ENA) over the entire concentration range. The intensity I-3 of the longest-lived component due to the annihilation of ortho-positronium (o-Ps) exhibited a complex behavior as a function of ENA concentration. The addition of up to 12% ENA to polyethylene decreased the intensity from 28.2 to 25.8 %. Further addition of E/VA, somewhat surprisingly, resulted in an enhancement of positronium (Ps) formation that continued until I-3 reached a value of 29.7% for pure ENA. The effect of ENA on Ps formation was found to be strongly influenced by the application of an external electric field. For example, the o-Ps intensity recorded at a field of 50 kV/cm monotonously increased from 18.8% to 29.6% with increasing E/VA concentration. These results are discussed on the basis of the spur reaction model of Ps formation.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000075720100046
Citation statistics
Cited Times:64[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9949
Collection中科院上海原子核所2003年前
Recommended Citation
GB/T 7714
Kobayashi, Y,Wang, CL,Hirata, K,et al. Effects of composition and external electric field on positronium formation in a polymer blend system[J]. PHYSICAL REVIEW B,1998,58(9):5384.
APA Kobayashi, Y,Wang, CL,Hirata, K,Zheng, W,&Zhang, C.(1998).Effects of composition and external electric field on positronium formation in a polymer blend system.PHYSICAL REVIEW B,58(9),5384.
MLA Kobayashi, Y,et al."Effects of composition and external electric field on positronium formation in a polymer blend system".PHYSICAL REVIEW B 58.9(1998):5384.
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