High-Resolution Electron-Impact Study of the Far-Ultraviolet Emission Spectrum of Molecular Hydrogen

1995 ◽  
Vol 101 ◽  
pp. 375 ◽  
Author(s):  
Xianming Liu ◽  
Syed M. Ahmed ◽  
Rosalie A. Multari ◽  
Geoffrey K. James ◽  
Joseph M. Ajello
Keyword(s):  
High Resolution ◽  
Emission Spectrum ◽  
Electron Impact ◽  
Molecular Hydrogen ◽  
Impact Study ◽  
Ultraviolet Emission ◽  
Resolution Electron ◽  
Far Ultraviolet

High‐Resolution Electron‐Impact Emission Spectrum of H 2 . II. 760–900 A

2000 ◽  
Vol 129 (1) ◽  
pp. 267-280 ◽  
Author(s):  
Xianming Liu ◽  
D. E. Shemansky ◽  
J. M. Ajello ◽  
D. L. Hansen ◽  
C. Jonin ◽  
...  
Keyword(s):  
High Resolution ◽  
Emission Spectrum ◽  
Electron Impact ◽  
Resolution Electron

High‐Resolution Electron‐Impact Emission Spectrum of H 2 . I. Cross Sections and Emission Yields 900–1200 A

2000 ◽  
Vol 129 (1) ◽  
pp. 247-266 ◽  
Author(s):  
C. Jonin ◽  
Xianming Liu ◽  
J. M. Ajello ◽  
G. K. James ◽  
H. Abgrall
Keyword(s):  
High Resolution ◽  
Emission Spectrum ◽  
Electron Impact ◽  
Cross Sections ◽  
Resolution Electron

High-resolution far ultraviolet emission spectra of electron-excited molecular deuterium

1999 ◽  
Vol 32 (15) ◽  
pp. 3813-3838 ◽  
Author(s):  
H Abgrall ◽  
E Roueff ◽  
Xianming Liu ◽  
D E Shemansky ◽  
G K James
Keyword(s):  
High Resolution ◽  
Emission Spectra ◽  
Ultraviolet Emission ◽  
Far Ultraviolet

Electron Resonances Associated with the Lyman System of H2 and D2

1974 ◽  
Vol 52 (21) ◽  
pp. 2076-2082 ◽  
Author(s):  
J. Wm. McGowan ◽  
J. F. Williams ◽  
W. Meckbach
Keyword(s):  
High Resolution ◽  
Electron Impact ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Resolution Electron

The high resolution electron impact excitation of the H2 and D2 Lyman bands has been investigated. Particular attention has been paid to two series of (H2−2Σu+) resonances which decay into the B1Σu+(ν′) states.

Two New Band Systems in the Near Ultraviolet Spectrum of N2

1975 ◽  
Vol 53 (19) ◽  
pp. 2198-2209 ◽  
Author(s):  
P. K. Carroll ◽  
K. V. Subbaram
Keyword(s):  
High Resolution ◽  
Emission Spectrum ◽  
Rydberg State ◽  
Molecular Nitrogen ◽  
Ultraviolet Spectrum ◽  
Dissociation Limit ◽  
Ultraviolet Emission ◽  
Weak Band ◽  
Near Ultraviolet ◽  
Unusual Type

Two new weak band systems have been identified under high resolution in the near ultraviolet emission spectrum of molecular nitrogen. They are found to arise from a transition from a hitherto unknown 1Πg state, which it is proposed to call k, to the a′ 1Σu− and w1Δu states. The upper state is interpreted as the 1ΠgRydberg state of configuration … (1πu)4 (3σg) 3dπg. Straightforward treatment of the data by conventional methods gives B0d = 1.906 cm−1, B1d = 1.824 cm−1, T0 = 113 630.87 cm−1, and ΔG1/2 = 2305.92 cm−1. Only the d levels, i.e., the levels corresponding to the 1Πg− component, are observed and the absence of the c levels is attributed to an unusual type of predissociation involving the predicted stable 1Σg+ state which goes to the dissociation limit 2D + 2D (14.522 eV) and the 3Σg− state which arises at the limit 4S + 2P (13.332 eV). A new level at 117 661.11 cm−1 with a Bd value of 1.695 cm−1 is identified as v = 2 of the y1Πg state. A strong homogeneous interaction is found to be occurring between the new k1Πg state and the y1Πg state. A deperturbation calculation is carried out and yields the following deperturbed constants: k1Πg: Be = 1.959 cm−1; αe = 0.031 cm−1; re = 1.109 Å; T0 = 113 723.58 cm−1; ΔG1/2 = 2182.32 cm−1, y1Πg: Be = 1.739 cm−1; αe = 0.017 cm−1; re = 1.177 Å; Te = 114 314.36 cm−1; ωe = 1906.43 cm−1; αexe = 37.51 cm−1.

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