Measured Stark widths and shifts of singly ionized oxygen spectral lines in lower multiplets

Djeniže, S.; Milosavljević, Vladimir; Srećković, A.

doi:10.1016/s0022-4073(97)00134-9

Cited by 38 publications

(45 citation statements)

References 8 publications

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“…The modified version of the linear low pressure pulsed arc (Djeniže et al 1992(Djeniže et al , 1998(Djeniže et al , 2002Milosavljević et al 2000 has been used as a plasma source. A pulsed discharge Table 1.…”

Section: Methodsmentioning

confidence: 99%

Ion contribution to the astrophysical important 388.86, 471.32 and 501.56 nm He I spectral lines broadening

Milosavljević

Djeniže

2002

New Astronomy

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Section: Methodsmentioning

confidence: 99%

Ion contribution to the astrophysical important 388.86, 471.32 and 501.56 nm He I spectral lines broadening

Milosavljević

Djeniže

2002

New Astronomy

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“…The modified version of the linear low pressure pulsed arc (Djeniže et al 1991(Djeniže et al , 1998(Djeniže et al , 2000b has been used as a plasma source. A pulsed discharge was driven in a quartz discharge tube of 5 mm inner diameter and effective plasma length of 7.2 cm ( Fig.…”

Section: Methodsmentioning

confidence: 99%

“…A pulsed discharge was driven in a quartz discharge tube of 5 mm inner diameter and effective plasma length of 7.2 cm ( Fig. 1 in Djeniže et al 1991Djeniže et al , 1998. The tube has end-on quartz windows.…”

Section: Methodsmentioning

confidence: 99%

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Transition probabilities of several transitions in the Ar III and Ar IV spectra

Djeniže

Bukvić

2001

A&A

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Abstract. Using the relative line intensity ratios method between transitions that belong to the same multiplet in the Ar III (4s − 4p, 4s − 4p and 4p − 4d transitions) and Ar IV (4s − 4p and 4s − 4p transitions) spectra, some of the existing transition probability values (A) have been controlled. On the basis of the confirmed A values in Ar III (328.585 nm, 330.188 nm, 331.125 nm, 333.613 nm and 334.472 nm) and in Ar IV (280.944 nm and 278.896 nm) spectra two A values in Ar III and seven A values in Ar IV spectra have been determined, for the first time, relatively to the confirmed A values. Beside, some of the existing theoretical A data have been corrected, according to our experimentally observed relative line intensity ratio values. Measurements have been performed by using the linear low pressure pulsed arc, as an optically thin plasma source, operated in argon-helium mixture.

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“…The modified version of the linear low pressure pulsed arc (Djeniže et al 1991(Djeniže et al , 1998(Djeniže et al , 2002Milosavljević et al 2000 has been used as a plasma source. Pulsed discharge was performed in a quartz discharge tube.…”

Section: Methodsmentioning

confidence: 99%

Astrophysical plasma diagnostics through analysis of $\ion{Ar}{I}$ line shape characteristics

Milosavljević

Djeniže

2003

A&A

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Abstract. On the basis of five accurately recorded neutral argon (Ar ) line shapes (in the 4s-5p transition) we have recovered the basic plasma parameters i.e. electron temperature (T ) and electron density (N) using our new line deconvolution procedure in the case of three different plasmas created in a linear, low-pressure, pulsed arc discharge. The mentioned plasma parameters have also been measured using independent experimental diagnostic techniques. An excellent agreement has been found among the two sets of obtained parameters. This recommends our deconvolution procedure for plasma diagnostic purposes, especially in astrophysics where direct measurements of the main plasma parameters (T and N) are not possible. On the basis of the observed asymmetry of the Stark broadened line profile we have obtained not only its ion broadening parameter (A) which is caused by the influence of the ion microfield on the line broadening mechanism but also the influence of the ion-dynamical effect (D) on the line shape. The separate electron (W e ) and ion (W i ) contributions to the total Stark width, which have not been measured so far, have also been obtained and represent the first experimental data in this field. We have found a stronger influence of the ion contribution to the Ar  line profiles than the existing theoretical approximation provides. This is of importance for astrophysical plasma modeling and diagnostics.

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Measured Stark widths and shifts of singly ionized oxygen spectral lines in lower multiplets

Cited by 38 publications

References 8 publications

Ion contribution to the astrophysical important 388.86, 471.32 and 501.56 nm He I spectral lines broadening

Ion contribution to the astrophysical important 388.86, 471.32 and 501.56 nm He I spectral lines broadening

Transition probabilities of several transitions in the Ar III and Ar IV spectra

Astrophysical plasma diagnostics through analysis of $\ion{Ar}{I}$ line shape characteristics

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