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

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Volume 539 (March 2012)

A&A, 539 (2012) A40

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Table 1

Basic experimental data on plasma sources and plasma conditions for different experiments.

	Reference		Plasma diagnostics	Plasma diagnostics
	observed ions	Plasma source	electron density, N_e	electron temperature, T_e
	experimental errors

1	Platiša et al. (1975)	Low-pressure	Laser interferometry at 632.8 nm	Boltzmann plot of Ar II lines
	Ar III	pulsed arc	(0.44–0.80) × 10²³ m^-3	(21 000–23 080) K
	± 30%
2	Konjević & Pittman (1987)	Low-pressure	Laser interferometry at 632.8 nm	Ratio of O II impurity lines
	Ne III, Ar III, Kr III, Xe III	pulsed arc	Ne III: 2.12 × 10²³ m^-3	Ne III: 34 000 K
	± 20% for Ne III		Ar III: (0.44–0.85) × 10²³ m^-3	Ar III: (21 100–27 500) K
	± 15% for Ar III, Kr III, Xe III		Kr III: 0.86 × 10²³ m^-3	Kr III: 25 000 K
			Xe III: (0.81–0.83) × 10²³ m^-3	Xe III: 27 000 K
3	Purić et al. (1988)	Low-pressure	Laser interferometry at 632.8 nm	Boltzmann plot of Ne III lines
	Ne III, Ar III	pulsed arc	(2.18–2.80) × 10²³ m^-3	Ratios of Ne IV to Ne III lines
	± 20%			(42 000–59 000) K
4	Kobilarov & Konjević (1990)	Low-pressure	Stark width of the He II P_α line	Boltzmann plot of O III lines
	Ar III	pulsed arc	(5.80–10.00) × 10²³ m^-3	(80 000–110 000) K
	± 8% to ± 10%
5	Uzelac et al. (1993)	Gas linear	90° Thomson scattering	90° Thomson scattering
	Ne III	pinch	27.2 × 10²³ m^-3	85 000 K
	± 5% to ± 18%
6	Djeniže et al. (1996)	Low-pressure	Laser interferometry at 632.8 nm	Boltzmann plot of Ar III lines
	Ar III	pulsed arc	3.50 × 10²³ m^-3	Ratios of Ar IV to Ar III lines
	± 18%			Ratios of Ar III to Ar II lines
				38 000 K
7	Iriarte et al. (1997)	Linear pinch	Derived from experimental data	Derived from experimental data
	Xe III	discharge	from Gigosos et al. (1994)	from Gigosos et al. (1994)
	There is no information		0.24 × 10²³ m^-3	29 000 K
	about experimental errors
8	Romeo y Bidegain et al. (1998)	Linear pinch	Derived from experimental data	Derived from experimental data
	Xe III	discharge	from Gigosos et al. (1994)	from Gigosos et al. (1994)
	There is no information		0.24 × 10²³ m^-3	29 000 K
	about experimental errors
9	Ahmad et al. (1998)	Gas linear	90° Thomson scattering	90° Thomson scattering
	Kr III	pinch	(5.35–13.95) × 10²³ m^-3	(37 000–61 500) K
	± 5% to ± 15%
10	Blagojević et al. (2000)	Low-pressure	Stark width of the He II P_α line	Boltzmann plot of Ne II lines
	Ne III	pulsed arc	0.64 × 10²³ m^-3	33 400 K
	± 8%
11	Milosavljević et al. (2000)	Low-pressure	Laser interferometry at 632.8 nm	Ratios of Kr II to Kr I lines
	Kr III	pulsed arc	1.65 × 10²³ m^-3	17 000 K
	± 15%
12	Milosavljević et al. (2001)	Low-pressure	Laser interferometry at 632.8 nm	Boltzmann plot of Ne II lines
	Ne III	pulsed arc	(0.93–1.83) × 10²³ m^-3	(31 000–34 500) K
	± 15%
13	Seidel et al. (2001)	Gas linear	90° Thomson scattering	90° Thomson scattering
	Xe III	pinch	(6.00–12.00) × 10²³ m^-3	(34 800–92 800) K
	± 14%
14	Peláez et al. (2006)	Low-pressure	Two wavelengths	Boltzmann plot of Xe II lines
	Xe III	pulsed arc	Twyman-Green interferometer	(18 300–25 500) K
	± 6% to ± 20%		(0.20–1.60) × 10²³ m^-3
15	Bukvić et al. (2008)	Low-pressure	Laser interferometry at 632.8 nm	Boltzmann plotof Ar III lines
	Ar III	pulsed arc	(0.16–1.68) × 10²³ m^-3	(26 000–30 000) K
	± 12%
16	Peláez et al. (2009)	Low-pressure	Two wavelengths	Boltzmann plot of Xe II lines
	Xe III	pulsed arc	Twyman-Green interferometer	(18 000–25 500) K
	± 15% to ± 35%		(0.20–1.70) × 10²³ m^-3
17	Ćirišan et al. (2011)	Low-pressure	Two wavelengths	Boltzmann plot of Kr II lines
	Kr III	pulsed arc	Twyman-Green interferometer	(16 000–20 000) K
	± 15% to ± 30%		(0.70–2.00) × 10²³ m^-3
18	Djurović et al. (2011)	Low-pressure	Two wavelengths	Boltzmann plot of Ar II lines
	Ar III	pulsed arc	Twyman-Green interferometer	(16 000–24 000) K
	± 30% to ± 50%		(0.35–0.90) × 10²³ m^-3

Notes. Experimental errors of halfwidth measurements are estimated by authors.

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