Pair-production polarization correlations of intermediate-energy photons on atoms

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/39143

Title:	Pair-production polarization correlations of intermediate-energy photons on atoms
Authors:	Tseng,HK
Contributors:	物理研究所
Keywords:	NEAR-THRESHOLD
Date:	1997
Issue Date:	2010-07-08 14:06:16 (UTC+8)
Publisher:	中央大學
Abstract:	With a relativistic partial-wave method we calculated numerically the pair-production polarization correlations between incident photon and emitted positron in the field of atoms with atomic number Z = 1, 50 and 92 for photons of energies k = 5 m(e)c(2) and 10 m(e)c(2). In this intermediate-photon-energy region, our partial-wave results show that the Born approximation works fine for low Z elements, as expected; while the high-energy approximation is poor for the prediction of the polarization correlations, just as its prediction for the unpolarized positron energy spectrum. This indicates that the energy is not yet high enough for the cases we considered. Our partial-wave results also show that the polarization correlations are almost independent of the atomic-electron screening.
Relation:	JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	397	View/Open

社群 sharing