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o-Ps lifetimes in iron containing micro- and mesoporous media

机译:含铁的微孔和中孔介质中o-Ps的寿命

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摘要

Positron annihilation lifetime (LT) measurements were used to study the influence of addition of iron on ortho-positronium (o-Ps) in micro and mesoporous media. Three types of porous samples containing iron were chosen for the investigation. LT spectra were decomposed to four components in the 0.1 - 50 ns lifetime range. An attempt is made to correlate the data with sites occupied by iron in the framework as derived from Mossbauer studies. No significant correlation could be detected in this respect. Instead, dominating role of presence or absence of iron can be deduced. Certain influence can also be attributed to the presence of adsorbed water.
机译:用正电子an没寿命(LT)测量来研究铁的添加对微孔和中孔介质中正正电子(o-Ps)的影响。选择了三种类型的含铁多孔样品进行研究。 LT光谱在0.1-50 ns的寿命范围内分解为四个分量。试图将数据与框架中的铁所占据的位置相关联,这些位置来自Mossbauer研究。在这方面,没有发现明显的相关性。相反,可以推断出铁的存在或不存在的主导作用。某些影响也可以归因于吸附水的存在。

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  • 来源
  • 会议地点 Smolenice Castle(SK)
  • 作者单位

    Center for Nuclear Techniques -Vietnam Atomic Energy Commission, 217 Nguyen Trai, District 1, Ho Chi Minh City, Viet Nam;

    Institute of Isotopes HAS, H-1525 Budapest, P.O.B. 77, Hungary;

    Department of Materials Physics, Eoetvoes University, Pazmany Peter setany 1/A, H-1117 Budapest, Hungary;

    KFKI Research Institute for Particle and Nuclear Physics H-1525 Budapest 114, P.O.B. 49, Hungary;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Porous Solids; Positron Annihilation; Trapped o-Ps; Zeolites; ~(57)Fe Moessbauer;

    机译:多孔固体正电子An灭;被困o-Ps;沸石; 〜(57)菲斯·鲍尔斯;

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