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Oscillatory quantum screening effects on the positronium (Ps) formation in quantum plasmas

Title
Oscillatory quantum screening effects on the positronium (Ps) formation in quantum plasmas
Author
정영대
Keywords
NONIDEAL PLASMA; ELECTRONS; CHARGE; DENSE; ION
Issue Date
2011-11
Publisher
AMERICAN INSTITUTE OF PHYSICS
Citation
PHYSICS OF PLASMAS, 2011, 18(6), 064503
Abstract
The oscillatory screening effects on the transition bremsstrahlung radiation due to the polarization interaction between the electron and shielding cloud are investigated in dense quantum plasmas. The impact-parameter analysis with the modified Debye-Huckel potential is applied to obtain the bremsstrahlung radiation cross section as a function of the quantum wave number, impact parameter, photon energy, and projectile energy. The results show that the oscillatory quantum screening effect strongly suppresses the transition bremsstrahlung radiation spectrum in dense quantum plasmas. It is also found that the oscillatory quantum screening effect is more significant near the maximum peak of the bremsstrahlung radiation cross section. In addition, the maximum peak of the bremsstrahlung radiation cross section is getting close to the center of the shielding cloud as increasing quantum wave number. It is interesting to note that the range of the bremsstrahlung photon energy would be broadened with an increase of the oscillatory screening effect. It is also found that the oscillatory screening effects on the transition bremsstrahlung spectrum decreases with increasing projectile energy. (C) 2011 American Institute of Physics. [doi:10.1063/1.3594568]
URI
https://aip.scitation.org/doi/abs/10.1063/1.3594568http://repository.hanyang.ac.kr/handle/20.500.11754/69884
ISSN
1070-664X
DOI
10.1063/1.3594568
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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