Positron and Positronium Trapping in Heat Treated Zeolites (Ceramics), the Effect of Swift Heavy Ion Irradiation

• Authors: P. Major , Zs. Kajcsos , L. Liszkay , P. Zalán , C. Kosanović , S. Bosnar , B. Subotić , K. Lázár , V. Skuratov , K. Havancsák , P. Gordo , M. Ferreira Marques
• Languages of publication: EN

Abstracts

EN

A systematic study of zeolite precursor gels, zeolites, and products of their recrystallization to ceramics was carried out in presence of various alkali ions. The investigation of radiation damage induced by high-energy ion beam irradiation with swift heavy ions (Bi ions at 670 MeV energy with 4×10^{12} ion/cm^2 fluence) was also included. The shortening of lifetimes found after irradiation in ceramics might probably be ascribed to interactions of o-Ps with free radicals and other quenching agents created through the ion irradiation. These lifetime-shortening interactions probably partly hide the o-Ps trapping in free volume sites.

Keywords

EN

78.70.Bj; 61.43.Gt; 36.10.Dr; 61.80.Jh

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 61.43.Gt: Powders, porous materials
• 36.10.Dr: Positronium(see also 82.30.Gg Positronium chemistry)
• 61.80.Jh: Ion radiation effects(for ion implantation, see 61.72.U-)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 5
• Pages: 1441-1446

Dates

published

2008-05

received

2007-09-03

Contributors

author

P. Major

• KFKI Res. Inst. for Part. Nucl. Physics, P.O.B. 49, H-1525 Budapest 114, Hungary

author

Zs. Kajcsos

• KFKI Res. Inst. for Part. Nucl. Physics, P.O.B. 49, H-1525 Budapest 114, Hungary

author

L. Liszkay

• KFKI Res. Inst. for Part. Nucl. Physics, P.O.B. 49, H-1525 Budapest 114, Hungary

author

P. Zalán

• KFKI Res. Inst. for Part. Nucl. Physics, P.O.B. 49, H-1525 Budapest 114, Hungary

author

C. Kosanović

• Div. of Mater. Chem., Ruder Boskovic Institute, Bijenicka 54, P.O.B. 180, Zagreb, Croatia

author

S. Bosnar

• Div. of Mater. Chem., Ruder Boskovic Institute, Bijenicka 54, P.O.B. 180, Zagreb, Croatia

author

B. Subotić

• Div. of Mater. Chem., Ruder Boskovic Institute, Bijenicka 54, P.O.B. 180, Zagreb, Croatia

author

K. Lázár

• Inst. of Isotopes, HAS, H-1525 Budapest, P.O.B. 77, Hungary

author

V. Skuratov

• Flerov Laboratory of Nuclear Reactions, Center of Applied Physics, JINR, Ru-141980 Dubna, Russia

author

K. Havancsák

• Dept. of Mater. Physics, Eötvös Univ., Pázmány Péter sétány 1A, H-1117 Budapest, Hungary

author

P. Gordo

• ICEMS, Dept. of Physics, University of Coimbra, 3004-516 Coimbra, Portugal

author

M. Ferreira Marques

• Dep. de Engenharia Química, Inst. Superior de Engenharia, 3031-199 Coimbra, Portugal

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Identifiers

DOI

10.12693/APhysPolA.113.1441