DECHANNELING OF POSITRONS BY DISLOCATIONS: EFFECTS OF ANHARMONIC INTERACTIONS

Autor:	Juby George, Anand P. Pathak
Rok vydání:	2010
Předmět:	Physics Nuclear and High Energy Physics Anharmonicity Astronomy and Astrophysics Radiation Atomic and Molecular Physics and Optics Planar Positron Bound state Atomic physics Dislocation Wave function Quantum Computer Science::Information Theory
Zdroj:	International Journal of Modern Physics A. 25:144-156
ISSN:	1793-656X 0217-751X
DOI:	10.1142/s0217751x10049992
Popis:	A quantum mechanical treatment of the effects of dislocations on planar channeling of positrons is presented. The effects of anharmonic terms on the positron planar potential are considered in these calculations. The wavefunction of channeled positron in the perfect channel and the two regions of dislocation affected channel are found and compared with harmonic case. The corresponding effects on bound states and the transitions among these states are calculated. The transition probabilities and the resulting dechanneling probabilities are found for initially channelled particles in states |0〉 and |1〉. The calculations are carried out with varying channel distance from the dislocation core. Applications of anharmonic interactions on channeling radiation are also investigated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::86216678219b791d3bf9b3e1a718c646 https://doi.org/10.1142/s0217751x10049992 Zobrazit plný text záznamu