DETECTION OF PARAMAGNETIC CENTERS ON AMORPHOUS-SIO2 GRAIN SURFACES USING POSITRONIUM
文献类型：期刊论文
| 作者 | SAITO, H; NAGASHIMA, Y; HYODO, T; Zhang TB(张天保); CHANG, TB |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 1995 |
| 卷号 | 52期号:2页码:R689-R692 |
| 通讯作者 | ACAD SINICA,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA |
| 英文摘要 | Angular correlation of positron-annihilation radiation, positron-lifetime spectra, and Doppler-broadening spectra of the annihilation radiation from silica aerogel have been measured in the temperature range between 13 and 295 K. Spin conversion of positronium at the surfaces of the amorphous-SiO2 grains is observed when the aerogel is irradiated sufficiently by the positrons at low temperatures. This shows that paramagnetic centers are induced on the first layer of the surface of the amorphous-SiO2 grains by the irradiation. The surface paramagnetic centers are unstable above 150 K and are attributed to a nonbridging oxygen hole center (Si-O-.). |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Condensed Matter |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1995RJ71100003 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/240327]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | SAITO, H,NAGASHIMA, Y,HYODO, T,et al. DETECTION OF PARAMAGNETIC CENTERS ON AMORPHOUS-SIO2 GRAIN SURFACES USING POSITRONIUM[J]. PHYSICAL REVIEW B,1995,52(2):R689-R692. |
| APA | SAITO, H,NAGASHIMA, Y,HYODO, T,张天保,&CHANG, TB.(1995).DETECTION OF PARAMAGNETIC CENTERS ON AMORPHOUS-SIO2 GRAIN SURFACES USING POSITRONIUM.PHYSICAL REVIEW B,52(2),R689-R692. |
| MLA | SAITO, H,et al."DETECTION OF PARAMAGNETIC CENTERS ON AMORPHOUS-SIO2 GRAIN SURFACES USING POSITRONIUM".PHYSICAL REVIEW B 52.2(1995):R689-R692. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。