Evidence for the existence of two kinds of orthopositronium in condensed rare gases and for irreversible transitions between them

Radiation Physics and Chemistry

Volumn 58, Issue 5-6, 2000, Pages 503-508

  Seeger, A ^a,b  

^a MAX PLANCK INSTITUTE FOR INTELLIGENT SYSTEMS   (Germany)

^b UNIVERSITY OF STUTTGART   (Germany)

Author keywords

Condensed rare gases; Metastable positronium; Positronium bubbles; Positronium formation; Positronium slowing down; Positronium trapping

Indexed keywords

ARGON; ELECTRON TRANSPORT PROPERTIES; ELECTRON TRAPS; ELECTRONS; INERT GASES; KRYPTON; LIQUIDS; NEON; PHASE TRANSITIONS; SOLIDS;

CONDENSED RARE GASES; IRREVERSIBLE TRANSITIONS; ORTHOPOSITRONIUM; POSITRONIUM BUBBLES; POSITRONIUM FORMATION; POSITRONIUM SLOWING DOWN; POSITRONIUM TRAPPING;

POSITRONS;

POLYMER;

CHEMICAL STRUCTURE; CONFERENCE PAPER; DESTRUCTION; ENERGY; GAS; LIFESPAN; LIQUID; PHASE TRANSITION; PHYSICAL CHEMISTRY; POSITRONIUM; RADIOCHEMISTRY; TEMPERATURE;

EID: 0034213510     PISSN: 0969806X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0969-806X(00)00207-3     Document Type: Article

References (17)

1. Andrussow, L., 1969. Viskosität von Flüssigkeiten. In: Landolt-Börnstein, 6. Aufl., II. Bd. Teil 5a, Sect. 2512, Springer, Berlin etc.
2. Cao H., Zhang R., Yuan J.-P., Huang C.M., Jean Y.C., Suzuki R., Ohdaira T., Nielsen B. Free-volume hole model for positronium formation in polymers: surface studies. J. Physics: Condens. Matter. 10:1998;10429.
3. Eldrup M., Lightbody D., Sherwood J.N. The temperature dependence of positron lifetimes in solid pivalic acid. Chem. Phys. 63:1981;51.
4. Faber T.E. Electronic transport in liquid metals. Ziman J.M. The Physics of Metals, 1. Electronics. 1969;University Press, Cambridge. (Chapter 6).
5. Ferrell R.A. Long lifetime of positronium in liquid helium. Phys. Rev. 108:1957;167.
6. +SR) study of carbon phases, SiC, and fused quartz. J. Physics: Condensed Matter. 10:1998;10461.
7. Green A.E., Zerna W. Theoretical Elasticity. 1968;Clarendon Press, Oxford.
8. Mogensen O.E. Positron Annihilation in Chemistry. 1995;Springer, Berlin etc.
9. Ogden R.W. Non-Linear Elastic Deformations. 1997;Dover, Mineola, NY.
10. Seeger A., Banhart F. On the systematics of positron lifetimes in metals. phys. stat. sol. (a). 102:1987;171.
11. Seeger A. Positron diffusion in solids and liquid metals. Appl. Surf. Sci. 85:1995;8.
12. Siegle, A., 1998. Positronenzerstrahlung in kondensierter Materie - eine Untersuchung mit der Methode der Lebensalter-Impuls-Korrelation. Dr.rer.nat.thesis Universität Stuttgart, Cuvillier Verlag, Göttingen.
13. Stewart A.T., Briscoe C.V., Steinbacher J.J. Positron annihilation in simple condensed gases. Can. J. Physics. 68:1990;1362.
14. Stoll H., Koch M., Lauff U., Maier K., Major J., Schneider H., Seeger A., Siegle A. Annihilation of incompletely thermalized positronium studied by age-momentum correlation. Appl. Surf. Sci. 85:1995;17.
15. Stoll H., Castellaz P., Koch S., Major J., Schneider H., Seeger A., Siegle A. Age-momentum-correlation (AMOC) experiments by means of an MeV positron beam. Mater. Sci. Forum. 255-257:1997;92.
16. Tao S.J. Positron annihilation in molecular substances. J. Chem. Phys. 56:1972;5499.
17. Wesolowski, P., 1995. Positroniumzustände in kondensierten Edelgasen. Dr.rer.nat.thesis Universität Stuttgart, Stuttgart.