High-resolution autoionizing line spectra of Mg ii and Al iii in the 160–260-Å range emitted from a Penning ionization discharge plasma

Finkenthal, M.; Litman, Ami; Mandelbaum, P.; Stutman, D.; Schwob, J. L.

doi:10.1364/josab.5.001640

Cited by 17 publications

(13 citation statements)

References 18 publications

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“…The transition was preliminarily assigned to the 1 192. 6 A line observed by Martinson et al [5] and later predicted [8] to appear as 1194.7 f 0.5 A, as mentioned in the Introduction.…”

Section: P' 3s3d 4f912mentioning

confidence: 65%

“…The position of 3s3p 4P5j2 relative to 3s3p 4S312 can be extracted from the data in Ref. [6] to be 12169 f 50cm-', while our calculation yields 12436 cm-' . However, it is possible to argue that the first value obtained experimentally is correct.…”

Section: S3p 4ps12mentioning

confidence: 77%

“…Identification of the 3p2 4P5,!-3s3p 4D7/2 transition will now allow us to determine the positions of the 3p2 4Ds12, 4D7/2, and 3s3d 4F9jz levels. Utilizing the knowledge of the 3s3p 4D5j2 level above 3s3p 4S3,z [6] and the observed splitting 3s3p 4D7/z-s12, we can predict that the 3p2 4Psj2 + 3s3p 4D7/2 transition should appear at 1477.7 f 1.1 A. Within this small spectral range, only one line is observed, at 1478.10A.…”

Section: P2 4d7j2 4d5j2 and 4p5j2mentioning

confidence: 90%

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Experimental and theoretical study of core-excited states of Al III

Gaardsted¹,

Brage²,

Fischer³

et al. 1990

Phys. Scr.

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The core-excited states of Al III have been studied both experimentally and theoretically. The calculation of energy levels and lifetimes was performed by the multiconfiguration Hartree-Fock method, with Breit-Pauli relativistic corrections taken into account, and included the 2p5 3s3p, 3p2, 3s3d, and 3s4s configurations. The experimental data were obtained by the beam-foil method. A level scheme involving quartet levels of the 2p5 3s3p, 3p2, and 3s3d configurations has been established. Autoionization is the dominant decay channel for the levels belonging to the 2p5 3p2 and 3s3d terms, and only for a few levels of these terms, the dominant decay mode is an optical transition to a 2p5 3s3p level. This is in disagreement with preliminary results from a recent optical study of the Al III system [Martinson et al., Nucl. Instrum. Methods B31, 188 (1988)]. Differences and similarities with the recently studied isoelectronic quartet systems of Na I and Mg II are discussed.

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“…The transition was preliminarily assigned to the 1 192. 6 A line observed by Martinson et al [5] and later predicted [8] to appear as 1194.7 f 0.5 A, as mentioned in the Introduction.…”

Section: P' 3s3d 4f912mentioning

confidence: 65%

Section: S3p 4ps12mentioning

confidence: 77%

Section: P2 4d7j2 4d5j2 and 4p5j2mentioning

confidence: 90%

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Experimental and theoretical study of core-excited states of Al III

Gaardsted¹,

Brage²,

Fischer³

et al. 1990

Phys. Scr.

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“…The soft x-ray emission from Mgii 2ps3$ and 2$(3s3p)'P autoionizing levels in the range 230-260 8, is shown in figure 4. The Mg II lines have been classified by Pedrotti et a1 Finkenthal et al(1988).…”

Section: Coniparison Between the Ai III Arid Mg 11 Pid Spectramentioning

confidence: 99%

Interpretation of the relative line intensities in the autoionizing spectrum of Al III emitted from a Penning discharge

Stutman¹,

Finkenthal²,

Schwob³

et al. 1994

J. Phys. B: At. Mol. Opt. Phys.

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We attempt to interpret the relative line intensities in the soft X-ray spectrum of Al III ions emitted from a Penning discharge, on the assumption that the 2p53s2 and 2p5(3s3p 3P) autoionizing levels are excited predominantly by inner-shell ionization from Al II ground and metastable levels, respectively. The plasma has been spectroscopically diagnosed and the Al III soft X-ray spectrum predicted using a collisional radiative model incorporating the experimental plasma parameters and theoretical predictions for the properties of the autoionizing levels. The model includes collisional inner-shell ionization from Al II levels by fast electrons, inelastic collisions with cold Maxwellian electrons and radiative and autoionization decays. The comparison between the experimental and the predicted relative line intensities seems to confirm that most of the 2p5(3s3p 3P) Al III levels have large radiative branching ratios. This conclusion is supported also by a comparison between Al III and Mg II spectra obtained in similar excitation conditions. Several 2p63p 2P-2p5(3s3p 3P)2P, 2D Al III transitions having radiative yields close to one and large gain cross sections, may be of interest for soft X-ray lasing.

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“…The curve through the points is drawn only to guide the eye. The experimental data are taken from: Mg I1 [8], A1 111 [8,9], Si IV [9], S VI and C1 VI1 this work, Ti XI1 and Fe XVI [12].…”

Section: Absolute Energies Along the Isoelectronic Sequencementioning

confidence: 99%

Absolute excitation energies for the 2p⁵3s3pand 3dconfigurations in core-excited Na-like sulfur and chlorine

Westerlind¹,

Engström²,

Jupén³

et al. 1991

Phys. Scr.

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Using the beam-foil technique we have investigated the 2p631 2L-2p'3s31 2,4L transitions which connect the normal and core-excited termsystems in Na-like S VI and C1 VII. From the observed wavelengths absolute excitation energies have been derived for some core-excited levels. The analysis is greatly facilitated by combining the results from theoretical calculations with measurements utilizing the unique time-resolution of the beam-foil method. We also present an overview of the absolute energies along the isoelectronic sequence.

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High-resolution autoionizing line spectra of Mg ii and Al iii in the 160–260-Å range emitted from a Penning ionization discharge plasma

Cited by 17 publications

References 18 publications

Experimental and theoretical study of core-excited states of Al III

Experimental and theoretical study of core-excited states of Al III

Interpretation of the relative line intensities in the autoionizing spectrum of Al III emitted from a Penning discharge

Absolute excitation energies for the 2p⁵3s3pand 3dconfigurations in core-excited Na-like sulfur and chlorine

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High-resolution autoionizing line spectra of Mg ii and Al iii in the 160–260-Å range emitted from a Penning ionization discharge plasma

Cited by 17 publications

References 18 publications

Experimental and theoretical study of core-excited states of Al III

Experimental and theoretical study of core-excited states of Al III

Interpretation of the relative line intensities in the autoionizing spectrum of Al III emitted from a Penning discharge

Absolute excitation energies for the 2p53s3pand 3dconfigurations in core-excited Na-like sulfur and chlorine

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Absolute excitation energies for the 2p⁵3s3pand 3dconfigurations in core-excited Na-like sulfur and chlorine