Test of predicted<i>Δn≥1</i><i>L</i>-shell dielectronic-recombination cross sections

Em, Bernstein; Mw, Clark; Ja, Tanis; Wt, Woodland; Kh, Berkner; As, Schlachter; Jw, Stearns; DuBois, R.D.; Graham, W. G.; Tj, Morgan; Dw, Mueller; Mp, Stockli

doi:10.1103/physreva.40.4085

Cited by 15 publications

(2 citation statements)

References 26 publications

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“…This was found in a theoretical study (Gorczyca & Badnell 1996) that explained why previous theoretical calculations were a factor of ≈2 larger than the experimental DR results for Fe xvi forming Fe xv (Linkemann et al 1995). The work of Gorczyca & Badnell (1996) also explained the discrepancies between theory and experiment for the ion-atom process known as resonant transfer plus excitation (RTEX) of Nb xxxi (Bernstein et al 1989) and Cu xix and Cu xx (Závodszky et al 1997). …”

Section: Resultsmentioning

confidence: 51%

Importance of Configuration Interaction for Accurate Atomic Data: Fluorescence Yields of K-Shell Vacancy, Lithium-like Ions

Gorczyca

Dumitriu

Hasoğlu

et al. 2006

ApJ

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We demonstrate that the inclusion of configuration interaction (CI) results in significant values for the K-shell fluorescence yields of Li-like ions, which are zero in a single-configuration approach. Modeling codes for simulating supernova remnants under nonequilibrium ionization conditions or photoionized plasmas such as active galactic nuclei or X-ray binaries need to be updated accordingly. A two-parameter fitting formula for the fluorescence yields has been developed. The generality of important CI effects on atomic calculations is pointed out.

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Section: Resultsmentioning

confidence: 51%

Importance of Configuration Interaction for Accurate Atomic Data: Fluorescence Yields of K-Shell Vacancy, Lithium-like Ions

Gorczyca

Dumitriu

Hasoğlu

et al. 2006

ApJ

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“…The RTE process gives rise to excited projectile states which relax either by photon or Auger electron emission. The production of these excited states is investi gated experimentally by low resolution coincidence measurements of the emitted x-ray and the projectile charge state [199][200][201][202][203][204][205][206][207][208][209][210][211][212], of the x-ray and a second x-ray [213,214] or by high resolution Auger electron spectroscopy [22,24,[26][27][28][29][30][31][32][215][216][217]. The processes are then termed RTEX, RTEXX and RTEA, respectively.…”

Section: Discussionmentioning

confidence: 99%

A novel high - efficiency paracentric hemispherical spectrograph for zero - degree auger projectile spectroscopy

Benis¹,

Μπένης²

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The paracentric HDA: III. The real spectrograph 6.1 Spectrograph operation mode 76 6.2 HDA -Lens voltages parameterization 77 6.2.1 V 0 study 77 6.2.2 Lens focusing study 6.3 Spectrograph operation in low resolution mode 6.4 Spectrograph operation in high resolution mode 6.5 Performance comparison of the hemispherical spectrograph and the KSU tandem spectrometer 6.6 Discussion and Conclusions 7 Data Analysis: Determination of absolute DDCS 7.1 Energy Calibration 93 7.2 Double Differential Cross-Section 7.3 Absolute MCP efficiency determination: Binary Encounter electron normalization 7.4 Error analysis 8 Binary Encounter electrons 8.1 Background and motivation Ill 8.2 Impulse Approximation 8.2.1 Rutherford Scattering Model 8.2.2 Elastic electron Scattering Model 8.3 BEe peak enhancement factors for collisions of 0.4-1.2 MeV/u B( 2-5 ) + + H 2 8.3.1 Historical background 8.3.2 Results and discussion 8.4 Conclusions 9 Spectroscopy of B^1 -3)+ intermediate states 126 9.1 Motivation 126 9.2 The Auger spectrum of B 4+ + H 2 : Production of He-like B 3+ doubly excited states 126 9.3 The Auger spectrum of B 3+ + H 2 : I. Production of Li-like B 2+ and He-like B 3+ doubly excited states . . . 132 9.4 The Auger spectrum of B 3+ + H 2 : II. Production of Li-like B 2+ triply excited states 138 9.5 The Auger spectrum of B 3+ + H 2 : III. Determination of B 3+ beam metastable fraction 142 9.6 The Auger spectrum of B 2+ + H 2 147 9.7 Conclusions 156 11 7 Angular compression of electrons emitted from fast projectiles 17 8 Geometrical interpretation of the broadening effect 19 9 Broadening coefficients ABg ' jt and AB^/e as a function of the labo ratory angle θ 21 10 Top view of the J. R. Macdonald Laboratory. 24 11 The zero-degree experimental setup 26 12 Chamber pressure as a function of the gas-cell pressure 28 13 The hemispherical paracentric spectrograph for ZAPS 29 14 The 4-element electrostatic focusing and decelerating lens 30 Chevron arrangement microchannel plates 31 16 PSD spatial resolution study 33 17 The Electronics Diagram 34 XSYS Data Acquisition System output 35 Dead Time Correction as a function of the count rate 37 Schematic diagram of the hemispherical deflector analyser geometry. . . 41 Detection plane of hemispherical analyser 47 3-D orbit in HDA 48 Reduced voltages V x /W and V 2 /W applied on the HDA 50 3-D graph of the dispersion D 53 Lens geometry and focusing parameters 55 3-D graph of the overall base-resolution 9?i > 56 Mean overall base resolution ^ 57 Theoretical energy calibration curves 59 Constants A,B and C of the energy calibration relation 60 Derivative of the energy calibration relation 61 The energy acceptance window Ar W i n dow 63 SIMION simulation for central and paracentric entries 66 SIMION simulation for six different analyser entries Ro 67 SIMION study of base energy resolution 69 SIMION study of trace widths over the PSD area 70 36 SIMION study of energy resolution over the PSD area 71 SIMION study of reduced acceptance energy window 72 38 SIMION simulations, theoretical calculation...

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Resonant recombination in ion-atom collisions

Tanis

Lecture Notes in Physics

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Test of predictedΔn≥1L-shell dielectronic-recombination cross sections

Cited by 15 publications

References 26 publications

Importance of Configuration Interaction for Accurate Atomic Data: Fluorescence Yields of K-Shell Vacancy, Lithium-like Ions

Importance of Configuration Interaction for Accurate Atomic Data: Fluorescence Yields of K-Shell Vacancy, Lithium-like Ions

A novel high - efficiency paracentric hemispherical spectrograph for zero - degree auger projectile spectroscopy

Resonant recombination in ion-atom collisions

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