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Relativistic calculation of emission spectra of highly charged W ions and electron impact

presentation at ADAS. Relativistic calculation of emission spectra of highly charged W ions and electron impact ionization cross sections of W. 2006. 11. 14. Yongjoo Rhee ( 李 鏞 周 ). Laboratory for Quantum Optics Korea Atomic Energy Research Institute 韓國 原子力 硏究所 量子光學技術開發部.

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Relativistic calculation of emission spectra of highly charged W ions and electron impact

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  1. presentation at ADAS Relativistic calculation of emission spectra of highly charged W ions and electron impact ionization cross sections of W 2006. 11. 14. Yongjoo Rhee (李 鏞 周) Laboratory for Quantum Optics Korea Atomic Energy Research Institute 韓國 原子力 硏究所 量子光學技術開發部 yjrhee@kaeri.re.kr http://amods.kaeri.re.kr

  2. Electron impact ionization cross sections • - W/W+ • - Ionization of W and W+ by electron impact. • Duck-Hee Kwon, Yong-Joo Rhee, Yong-Ki Kim, • International Journal of Mass Spectrometry, 252 • pp213-221 (2006.4) • Emission spectra of highly charged W ions • - W33+, W34+, W35+, W36+ • 3. AMODS database • - http://amods.kaeri.re.kr

  3. Atomic Processes in a Fusion Plasma Plasma (keV) 2nd electron, ion, excited atom plasma-wall interaction electron Mo, W, V generation of elctron photon impurity secondary electron electron collision with plasma secondary electron photon emission plasma particle decrease of plasma temperature Plasma p, e, Be, Li, C, Ni, etc energy loss of plasma Diagnostic high Z (Ar, Xe, etc)

  4. Electron Impact Ionization Cross Sections 간접이온화 (excitation-autoionization) 직접이온화 (direct ionization) Continuum Continuum Excited state : autoionization or photoemission First ionization limit Ionization energy Electron Electron Bound state Bound state 2 Bound state 1 BEB (Binary Encounter Bethe) model Mott interference Bethe E: excitation energy B: bound energy PWB: plane wave Born Approximation for neutral atom CB: Coulomb Born approximation for singly charged ion N : Orbital Occupation Number B : Orbital Binding Energy U : Orbital Kinetic Energy R : Rydberg Energy T : Incident Electron Energy t = T/B u = U/B a0 : Bohr Radius N,B,U  relativistic MCDF calculation

  5. Dirac-Fock Equation MCDF Calculation Multi Configuration Dirac-Fock (MCDF) code : Jean-Paul Desclaux (Grenoble, France) Paul Indelicato (University of Paris, France) Yong-Ki Kim (NIST, USA) - ralativistic wave functions - electric and magnetic multipole transition - plane wave Born cross section - angular coefficients, etc Exchange term Radial function X r Screened Coulomb charge term Lagrange multipliers http://amods.kaeri.re.kr/mcdf/MCDF.html PC version (2005) Workstation version (2000)

  6. Energy levels of W (Z=74, m=meta stable state, g=ground state)

  7. e-impact ionization of W+ ion

  8. e-impact ionization of neutral W

  9. Online calcuation of Direct Ionization Cross Section

  10. Emission spectra of Highly Charged W Ions 4p64dn – [4p5 4dn+1 + 4p64dn-14f] Series of EUV spectra of W ions (25+ to 36+) measured at Berlin EBIT Calculation by HULLAC code C. Biedermann, Physica Scripta, 2001

  11. Energy levels of highly charged W ions W36+ ← Mo V W35+ ← Mo IV W34+ ← Mo III W33+ ← Mo II

  12. Transition Probabilities of W33+ Electric Dipole transition only 4p64dn– [ 4p5 4dn+1 + 4p64dn-14f ] n=2 for W36+ J= 2, 3, 4 n=3 for W35+ J= 1/2, 3/2, 5/2 n=4 for W34+ J= 0, 1, 2 n=5 for W33+ J= 1/2, 3/2, 5/2

  13. Spectrum of highly charged W33+ ions Electric Dipole transition only 4p64dn– [ 4p5 4d6 + 4p64d44f ]

  14. Transition Probabilities of W34+ Electric Dipole transition only 4p64dn– [ 4p5 4dn+1 + 4p64dn-14f ] n=2 for W36+ J= 2, 3, 4 n=3 for W35+ J= 1/2, 3/2, 5/2 n=4 for W34+ J= 0, 1, 2 n=5 for W33+ J= 1/2, 3/2, 5/2

  15. Spectrum of highly charged W34+ ions Electric Dipole transition only 4p64dn– [ 4p5 4d5 + 4p64d34f ]

  16. Transition Probabilities of W35+ Electric Dipole transition only 4p64dn– [ 4p5 4dn+1 + 4p64dn-14f ] n=2 for W36+ J= 2, 3, 4 n=3 for W35+ J= 1/2, 3/2, 5/2 n=4 for W34+ J= 0, 1, 2 n=5 for W33+ J= 1/2, 3/2, 5/2

  17. Spectrumof highly charged W35+ ions Electric Dipole transition only 4p64dn– [ 4p5 4d4 + 4p64d24f ]

  18. Spectra of highly charged W ions W36+ Electric Dipole transition only 4p64dn– [ 4p5 4dn+1 + 4p64dn-14f ] n=2 for W36+ J= 2, 3, 4 n=3 for W35+ J= 1/2, 3/2, 5/2 n=4 for W34+ J= 0, 1, 2 n=5 for W33+ J= 1/2, 3/2, 5/2 W35+ W34+ HCI Spectra are calculated using MCDF code for gA of each transition line and convolution with σ=0.138 is performed. W33+

  19. Spectra of highly charged W ions ASDEX upgrade, R. Neu, J.Phys.B, At. Mol. Opt. Phys. 1997

  20. Spectra of highly charged W ions RELAC code, R. Neu, J.Phys.B, At. Mol. Opt. Phys. 1997

  21. AMODS database http://amods.kaeri.re.kr

  22. Most data retrievals are controlled by SCRIPTS (PERL, k-shell) Structure & Raw Data Sources of AMODS Collisions and Reactions Atomic Structure & Transitions MPI PATH ALLADIN ASL IAEA,ORNL NIFS AI TP NIFS AEL Michigan NIST, CUP e IMPACT AMODS ATL CDS IFE Simulation KAERI MCDF ON-LINE NIST ISOTOPE DATA ADAS Mirror NIST ASD KAERI NIST Strathclyde POP DYNAMICS Fundamental Const NIST KAERI

  23. Atomic Spectral Lines - I

  24. Atomic Spectral Lines - II

  25. Electron Impact Excitation/Ionization

  26. Electron Impact Differential Cross Section Implemented in NIFS under CUP

  27. KAERI – NIFS collaboration

  28. Dielectronic Satellite Lines - NIFS

  29. Mirror Site of NIST ASD

  30. SUMMARY • Usage of W is expanding • - ITER, ASDEX, TRIAM, etc • - DATA of W are necessary • electron impact ionization cross section • spectra of highly charged ions • MCDF code is a good tool to solve the problem • - Relativistic calculation • - ab initio calculation • Verification of Data by experiments and theory is necessary • - by MCDF • - in LHD,TRIAM,ASDEX-U • - in laser facilities • International collaboration •  Japan (NIFS, ILE) •  China (LFRC, SIOM) •  Europe (ASDEX-U, JET)

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