R-Matrix Calculation of Electron Impact Excitation of Fine-Structure Levels of Ne-Like Iron

Author： Gupta G.P.   deb N.C.   Msezane A.Z.  

Publisher： Academic Press

ISSN： 0092-640X

Source： Atomic Data and Nuclear Data Tables, Vol.74, Iss.2, 2000-03, pp. : 257-266

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

Electronimpact collision strengths for transitions from the ground state to the fine-structure levels of the excited 2p53s, 2p53p, and 2p53d configurations in Fe XVII are calculated using a Breit–Pauli R-matrix method. The results are presented at 70 and 200 Ry. We considered the lowest 15 LS 2s22p6(1S), 2s22p53s(1,3Po), 2s22p53p(1,3S, 1,3P, 1,3D), and 2s22p53d(1,3Po, 1,3Do, 1,3Fo) states of Fe XVII in the present calculation. The 15 LS states give rise to 27 fine-structure levels which are represented by configuration-interaction wave functions. The relativistic effects are incorporated in the Breit–Pauli approximation by including one-body mass correction, Darwin, and spin–orbit interaction terms in the scattering equations. Our collision strengths are compared with those from other calculations. The excitation cross sections are integrated over a Maxwellian distribution of electron energies to give electron excitation rate coefficients over a wide temperature range from 250 to 1000 eV. The relative populations for different electron densities and temperatures are also presented.

Related content

ELECTRON IMPACT EXCITATION OF FINE-STRUCTURE LEVELS OF NEON-LIKE TITANIUM (Ti XIII)

By Gupta G.P.   deb N.C.   Msezane A.Z.  

Atomic Data and Nuclear Data Tables, Vol. 71, Iss. 1, 1999-01 ,pp. : 103-115 (13)

Academic Press

Access to resources Recommend Favorite

Fine Structure Radiative Transitions in C II and C II. using the Breit–pauli r-Matrix Method

By Nahar S.N.  

Atomic Data and Nuclear Data Tables, Vol. 80, Iss. 2, 2002-03 ,pp. : 205-234 (30)

Academic Press

Access to resources Recommend Favorite

CROSS SECTIONS AND RATE COEFFICIENTS FOR EXCITATION OF THE 1s22s2p 3PoJ → 1s22s2p 3PoJ′ FINE-STRUCTURE TRANSITIONS IN BERYLLIUM-LIKE IONS BY HEAVY PARTICLE IMPACT

By Ryans R.S.I.   Foster-Woods V.J.   Copeland F.   Keenan F.P.   Matthews A.   Reid R.H.G.  

Atomic Data and Nuclear Data Tables, Vol. 70, Iss. 2, 1998-11 ,pp. : 179-229 (51)

Academic Press

Access to resources Recommend Favorite

Fine-Structure Calculation of Energy Levels, Oscillator Strengths, and Transition Probabilities in Mg-Like Sulfur

By Gupta G.P.   Msezane A.Z.  

Atomic Data and Nuclear Data Tables, Vol. 74, Iss. 2, 2000-03 ,pp. : 267-282 (16)

Academic Press

Access to resources Recommend Favorite

EFFECTIVE COLLISION STRENGTHS FOR ELECTRON-IMPACT EXCITATION OF Ne IV

By Ramsbottom C.A.   Bell K.L.  

Atomic Data and Nuclear Data Tables, Vol. 68, Iss. 2, 1998-03 ,pp. : 203-218 (16)

Academic Press

Access to resources Recommend Favorite