Positrons and positronium in zeolites

被引：13
作者：
Kajcsos, Z
Duplâtre, G
Liszkay, L
Lázár, K
Lohonyai, L
Pál-Borbély, G
Beyer, HK
Caullet, P
Patarin, J
机构：
[1] KFKI Res Inst Nucl & Particle Phys, HU-1525 Budapest, Hungary
[2] CNRS, Chim Nucl Lab, IReS, IN2P3, FR-67037 Strasbourg 2, France
[3] Inst Isotope & Surface Chem, HU-1525 Budapest, Hungary
[4] Cent Res Inst Chem, HU-1525 Budapest, Hungary
[5] CNRS, Lab Mat Mineraux, URA 428, FR-68093 Mulhouse, France
来源：
POSITRON ANNIHILATION - ICPA-12 | 2001年 / 363-3卷
关键词：
3y-annihilation; capillary condensation; long-lived o-Ps; positronium; SiO2; zeolites;
D O I：
10.4028/www.scientific.net/MSF.363-365.238
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Positronium. (Ps) formation and interactions were investigated in zeolites. Positron annihilation (PA) lifetime spectroscopy, Doppler-broadening and the recording of the annihilation radiation energy distribution were applied to faujasite X and Y, silicalite-1 (by composition pure SiO2), ZSM-5 and mordenite. The dependence on heat treatment, sample evacuation and gas filling or water content was investigated. Lifetimes over 130 ns and Ps-fractions of 30-40% were found. Various PA techniques yield data with unexpected features for various samples.
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收藏
页码：238 / 243
页数：6
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