Measurement of the Stark broadening parameters of some singly ionized argon lines

Konjević, N.; Labat, J.; Ćirković, Lj.; Purić, J.

doi:10.1007/bf01399753

Cited by 36 publications

(20 citation statements)

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“…In contrast, the 487.98 nm transition belongs to another multiplet, which exhibits a ϳ30% stronger Stark effect. 12 Experimental linewidths are indeed consistent with both considerations, thereby confirming that the Stark effect is the primary line-broadening mechanism. A comparison of the experimental and calculated line shapes yields n e = ͑3.5Ϯ 0.5͒ ϫ 10 17 cm −3 or almost an order of magnitude higher than the values indicated by the H ␣ and H ␤ transitions.…”

supporting

confidence: 73%

“…4͑b͔͒ were chosen for analysis partially because they lie in an uncongested spectral region, allowing one to invoke a Lorentzian line shape and to use tabulated values of Stark broadening. 12 We note that the 480.60 and 484.78 nm Ar II lines are components of the same multiplet and, thus, are expected to have almost identical Stark widths. In contrast, the 487.98 nm transition belongs to another multiplet, which exhibits a ϳ30% stronger Stark effect.…”

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confidence: 75%

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Self-pulsing 104 A cm−2 current density discharges in dielectric barrier Al/Al2O3 microplasma devices

Yarmolich

Krasik

Stambulchik

et al. 2009

Applied Physics Letters

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Excitation of Al/Al2O3 microplasma devices with 50 μs, 800 V pulses produces, in Ar/H2 gas mixtures at 600 Torr, ∼6 A current pulses with a duration of ∼30 ns. Corresponding to peak current and power densities of ∼104 A/cm2 and ∼2.5 GW/cm3, respectively, these pulses are generated in a 10 μs burst in which the voltage self-pulses at a repetition frequency of ∼3 MHz. Analysis of the Hα, Hβ, and Ar II emission line profiles yields a plasma density of ∼1017 cm−3, and the emission of O IV ions suggests the presence of energetic electrons. Images of the microplasma indicate that the plasma is initiated by surface flashover and extends ∼200 μm outside the microcavity.

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confidence: 73%

mentioning

confidence: 75%

Self-pulsing 104 A cm−2 current density discharges in dielectric barrier Al/Al2O3 microplasma devices

Yarmolich

Krasik

Stambulchik

et al. 2009

Applied Physics Letters

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“…2) are taken from Popenoe & Shumaker (1965), Jalufka et al (1966), Roberts (1966), Chapelle et al (1968ab), Roberts (1968), Konjević et al (1970), Klein (1973), Labat et al (1974), Behringer & Thoma (1978), Vaessen et al (1985), Nick & Helbig (1986), Pittman & Konjević (1986), Vitel & Skowronek (1987), Abbas et al (1988), Djeniže et al (1989), Dzierzega & Musiol (1994), Pellerin et al (1997), Aparicio et al (1998) and Iglesias et al (2006).…”

mentioning

confidence: 99%

Stark halfwidth trends along the homologous sequence of singly ionized noble gases

Peláez¹,

Djurović

Cirisan

et al. 2010

A&A

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Aims. The aim of this work is to analyse experimental Stark halfwidths behaviour for the ( 3 P)ns−( 3 P)np and ( 3 P)np−( 3 P)nd transitions along the homologous sequence of single ionized noble gases. This kind of trend analysis can be useful for Stark halfwidths predictions and therefore for spectroscopic diagnostic of astrophysical plasmas. Methods. The compilation of Stark halfwidths was done taking into account the measurements developed in the last decades. The experimental results and observed Stark halfwidth trends for different multiplets of ionized noble gases were compared with the modified semiempirical formula (MSE) calculations and other theoretical estimations.Results. The analysis shows that the halfwidths of the spectral lines in all observed multiplets belonging to the same transitions have a similar trend along the homologous sequence. Stark halfwidths of ( 3 P)ns−( 3 P)np transitions are more or less constant, while those of ( 3 P)np−( 3 P)nd transitions have a clear increasing slope. A qualitative explanation of the observed Stark halfwidth trends based on the energy level structure is also given.

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“…The multiplets are arranged in the same way as it was done in NIST Atomic Spectra Database. The fifth and sixth columns contain measured Stark half-widths w m in picometres and in angular frequency units, respectively, those obtained in this work (TW) and the values measured by other authors (Jalufka et al 1966;Roberts 1966Roberts , 1968Chapelle et al 1968a,b;Konjević et al 1970;Labat et al 1974;Behinger & Thoma 1978;Nick & Helbig 1986;Pittman & Konjević 1986;Djeniže et al 1989;Dzierzega & Musiol 1994;Aparicio et al 1998a;Iglesias et al 2006). Reference numbers are indicated in the next column.…”

Section: R E S U Lt S a N D Discussionmentioning

confidence: 74%

“…A number of experimental studies have been devoted to Ar II spectral line Stark parameter measurement (Jalufka, Oertel & Ofelt 1966;Roberts 1966Roberts , 1968Blandin et al 1968;Chapelle et al 1968 ⋆ E-mail: djurovic@uns.ac.rs (SD); apa@opt.uva.es (JAA) a,b; Konjević et al 1970;Morris & Morris 1970;Labat et al 1974;Behinger & Thoma 1978;Nick & Helbig 1986;Pitman & Konjević 1986;Djeniže et al 1989;Dzierzega & Musiol 1994;Aparicio et al 1998a;Iglesias et al 2006). However, there are still a lot of data missing, particularly in the UV region.…”

Section: Introductionmentioning

confidence: 99%

Experimental transition probabilities and Stark parameters of singly ionized noble gases

Sainz-Ezquerra¹,

Teresa²

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Me dirigí hacia Feynman. Cuando llegué aél, Feynman estaba observando un arco iris. Tenía una intensa mirada en su rostro, como si se estuviera concentrando, como si nunca hubiera visto uno antes. O quizá como si pudiera ser elúltimo que viera. Me acerqué aél cautelosamente. 'Hola, profesor Feynman', dije. 'Mira, un arco iris', dijo sin mirarme. Observé el arco iris. Parecía muy impresionante, si te parabas a considerarlo. No era algo que yo hiciera normalmente en estaépoca. 'Me pregunto qué pensaban los antiguos del arco iris', dije en voz baja. Había muchos mitos basados en las estrellas, pero pensaba que el arco iris debió de haber parecido igualmente misterioso. 'Esa es una pregunta para Murray', dijo.'Todo lo que sé', siguió diciendo Feynman, 'es que según una leyenda losángeles ponen oro en sus extremos y sólo un hombre desnudo puede alcanzarlo. Como si un hombre desnudo no tuviera cosas mejores que hacer', dijo con una sonrisa pícara. '¿Sabes quién explicó por primera vez el verdadero origen del arco iris?', pregunté. 'Fue Descartes', dijo. Después de un rato me miró a los ojos.'¿Y cuál piensas tú que fue la principal característica del arco iris que inspiró el análisis matemático de Descartes?', preguntó. 'Bien, el arco iris es en realidad una sección de un cono que aparece como un arco con los colores del espectro cuando las gotas de agua son iluminadas por la luz del sol que procede de detrás del observador.' '¿Y?' 'Supongo que lo que le inspiró fue el darse cuenta de que el problema podía analizarse considerando unaúnica gota y la geometría de la situación.' 'Estás pasando por alto un aspecto clave del fenómeno', dijo. 'Muy bien, me rindo. ¿Qué diría usted que inspiró su teoría?' 'Yo diría que lo que le inspiró fue el pensamiento de que el arco iris era bello..."-Leonard Mlodinow, El arco iris de Feynman-This implies that there is enough 'space' for the collective shielding effect to happen. 2) The average distance between electrons, which is roughly given by n 1 3 e , must be very small compared to the Debye length: * The Boltzmann equation: it establishes the occupation of the excited states of atoms and ions as a function of the temperature. The proportion of the total density of particles that are in the state of energy E k is:

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Measurement of the Stark broadening parameters of some singly ionized argon lines

Cited by 36 publications

References 0 publications

Self-pulsing 104 A cm−2 current density discharges in dielectric barrier Al/Al2O3 microplasma devices

Self-pulsing 104 A cm−2 current density discharges in dielectric barrier Al/Al2O3 microplasma devices

Stark halfwidth trends along the homologous sequence of singly ionized noble gases

Experimental transition probabilities and Stark parameters of singly ionized noble gases

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