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Analytic strong-potential Born approximation cross sections for electron capture from the K shell by fast ions (1985)

Deb, N. C. ; Sil, N. C. ; McGuire, J. H.

College Park, Md. : American Institute of Physics (AIP)

Journal of Mathematical Physics 26 (1985), S. 2670-2675

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Details

ISSN: 1089-7658

Quelle: AIP Digital Archive

Thema: Mathematik , Physik

Notizen: The strong potential Born approximation has been applied to evaluate the transition amplitude for the collision process in which a fast ion of charge ZP captures an electron from the K shell of an atomic target with nuclear charge ZT, where ZT ≥ZP. The transition amplitude has been evaluated analytically in terms of Gauss hypergeometric functions. No peaking approximation has been made. We have considered the K-shell capture of electrons by high-energy protons from Li, C, Ne, Na, and Ar. Our results for C, Ne, and Ar are in good agreement with the available experimental data.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.526736

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Digitale Medien

Fine structure levels of Cl V and their lifetimes (2003)

Choudhury, K. B. ; Deb, N. C. ; Roy, K. ; [weitere]

Springer

The European physical journal 27 (2003), S. 103-107

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ISSN: 1434-6079

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract. We report a large scale configuration interaction calculation of Cl V by taking account of relativistic effect through the Breit-Pauli approximation. Excitation energies of the lowest 49 fine structure levels relative to the ground state $3s^23p(^2{\rm P}^o_{1/2})$ are found to be in good agreement with the NIST recommended data. Oscillator strengths, line strengths and radiative rates for the optically allowed and intercombination transitions among these levels and life times for some relatively longer lived fine structure levels are also reported for this ion. We confirm the interesting result that the life times for the multiplets of $3s3p^2(^4{\rm P})$ and $3s3p(^3{\rm P})3d(^4{\rm F})$ are of the order of microseconds.