THE SPECTRUM OF CN IN THE VACUUM ULTRAVIOLET

1956 ◽  
Vol 34 (1) ◽  
pp. 83-95 ◽  
Author(s):  
P. K. Carroll
Keyword(s):  
Dissociation Energy ◽  
Fourth Order ◽  
Hollow Cathode ◽  
Vacuum Ultraviolet ◽  
Hollow Cathode Discharge ◽  
Molecular Constants

The spectrum of the CN radical has been investigated in the Schumann region using a three-meter vacuum spectrograph in the fourth order. A hollow cathode discharge through streaming helium, to which a trace of cyanogen was added, was used as source. Three new systems of bands were found in the region 1650–2100 Å. These involve two hitherto unknown states: a 2Σ state designated by E, which gives rise to the transitions E2Σ → X2Σ and E2Σ → A2Π, and an inverted 2Δ state designated by J, which gives rise to the transition J2Δ → A2Π. Rotational analyses of the bands have been made and the molecular constants evaluated. The new data, although not decisive, support the higher value (8.2 ev.) for the dissociation energy of CN.

THE EMISSION SPECTRUM OF THE PH+ MOLECULE

1957 ◽  
Vol 35 (8) ◽  
pp. 901-911 ◽  
Author(s):  
N. A. Narasimham
Keyword(s):  
Emission Spectrum ◽  
Dissociation Energy ◽  
Hollow Cathode ◽  
Hollow Cathode Discharge ◽  
Spin Splitting ◽  
Rotational Constants ◽  
Π State ◽  
Large Spin

A system of three red degraded bands at 3854, 4228, and 3567 Å has been obtained in emission from a hollow cathode discharge through helium containing a little phosphorus vapor and hydrogen. Rotational analyses of the bands show that they are the 0–0, 0–1, and 1–0 bands of a 2Δ—2Π transition of the PH+ molecule. The 2Δ state is regular with small spin splitting (case b) while the 2Π state is regular with large spin splitting (case a). For ν = 0, the F1 levels of the 2Δ state with [Formula: see text] and the F2 levels with [Formula: see text] are predissociated. Also the lines arising from the F1 levels of the 2Δ state with ν = 1 are found to be extremely weak compared to those arising from the F2 levels. Vibrational and rotational constants have been determined and the dissociation energy has been found to be 3.06 ± 0.25 ev.

Spectroscopic identification of the SiH+ molecule: The A1Π–X1Σ+ system

1970 ◽  
Vol 48 (3) ◽  
pp. 247-253 ◽  
Author(s):  
A. E. Douglas ◽  
Barry L. Lutz
Keyword(s):  
Emission Spectrum ◽  
Ionization Potential ◽  
Hollow Cathode ◽  
Solar Spectrum ◽  
Hollow Cathode Discharge ◽  
Potential Curve ◽  
Dissociation Limit ◽  
Molecular Constants ◽  
State Potential ◽  
Spectroscopic Identification

The A1II–X1Σ+ transition of the SiH+ molecule has been observed in the emission spectrum of a hollow-cathode discharge through helium containing a trace of silane. The analysis of five bands yields the molecular constants Bc″ = 7.6603 cm−1, ΔG″(1/2) = 2088.69 cm−1, Bc′ = 4.9125 cm−1, ΔG′(1/2) = 390.17 cm−1, and v(0–0) = 25 025.20 cm−1. Because of the shallowness of the upper-state potential curve, a good estimate of the dissociation limit is obtained: D00(SiH+) = 3.20 ± 0.08 eV. This dissociation limit leads to an ionization potential of 8.01 ± 0.08 eV of SiH. The SiH+ molecule is tentatively identified in the solar spectrum and the possibility of detecting interstellar SiH+ is briefly discussed.

Etude spectrométrique de la perturbation du niveau vibrationnel ν = 1 de l'état B2Σu+ de N2+ dans les bandes (1,0), (1,1), (1,2) du système B2Σu+–X2Σg+

1977 ◽  
Vol 55 (17) ◽  
pp. 1492-1498 ◽  
Author(s):  
A. M. Bouchoux ◽  
J. P. Goure
Keyword(s):  
High Resolution ◽  
Hollow Cathode ◽  
Vibrational Level ◽  
The State ◽  
Hollow Cathode Discharge ◽  
Molecular Constants

The (1,0), (1,1), (1,2) bands of the system B2Σu+ – X2Σg+ of the ion N2+ are obtained in a hollow cathode discharge. The high resolution spectrometric recording has permitted an analysis of the frequencies and of the relative intensities of the rotational lines. The molecular constants and the parameters ξ and η of the perturbation of the vibrational level ν = 1 of the B2Σu+ state by the level ν = 11 of the state A2Πu have been determined.

Comparison of plasma characteristics of high-power pulsed sputtering glow discharge and hollow-cathode discharge

2020 ◽  
Vol 60 (1) ◽  
pp. 015501
Author(s):  
Shoki Abe ◽  
Katsuyuki Takahashi ◽  
Seiji Mukaigawa ◽  
Koichi Takaki ◽  
Ken Yukimura
Keyword(s):  
Glow Discharge ◽  
High Power ◽  
Hollow Cathode ◽  
Hollow Cathode Discharge ◽  
Plasma Characteristics

Effect of aging the hollow cathode by sputtering on the analytical precision of the hollow cathode discharge emission source

1992 ◽  
Vol 64 (17) ◽  
pp. 1831-1835 ◽  
Author(s):  
Jih Lie. Tseng ◽  
Jau Yurn. Kung ◽  
J. C. Williams ◽  
Steven T. Griffin
Keyword(s):  
Hollow Cathode ◽  
Hollow Cathode Discharge ◽  
Emission Source ◽  
Analytical Precision

A review of spectroanalytical investigations and applications of a cooled hollow cathode discharge

1981 ◽  
Vol 36 (12) ◽  
pp. 1153-1161 ◽  
Author(s):  
A.I. Drobyshev ◽  
Y.I. Turkin
Keyword(s):  
Hollow Cathode ◽  
Hollow Cathode Discharge

Comparison of trace analytical results obtained with different hollow cathode discharge lamps

1985 ◽  
Vol 85 (1-2) ◽  
pp. 15-22
Author(s):  
Zs. Vámos-Szilvássy ◽  
A. Buzási-Győrfi
Keyword(s):  
Hollow Cathode ◽  
Hollow Cathode Discharge ◽  
Analytical Results

Radio-frequency magnetized ring-shaped hollow cathode discharge plasma for low-pressure plasma processing

Vacuum ◽  
2014 ◽  
Vol 101 ◽  
pp. 46-52 ◽  
Author(s):  
Yasunori Ohtsu ◽  
Junta Eguchi ◽  
Yoshiki Yahata
Keyword(s):  
Radio Frequency ◽  
Hollow Cathode ◽  
Discharge Plasma ◽  
Plasma Processing ◽  
Low Pressure ◽  
Hollow Cathode Discharge ◽  
Pressure Plasma ◽  
Low Pressure Plasma
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