Sub-doppler spectroscopy of the ′ v2 = 2 Rydberg level of ND3 at vacuum ultraviolet energies

1986 ◽  
Vol 101 (3) ◽  
pp. 467-482 ◽  
Author(s):  
M.N.R. Ashfold ◽  
R.N. Dixon ◽  
K.N. Rosser ◽  
R.J. Stickland ◽  
C.M. Western
Keyword(s):  
Vacuum Ultraviolet ◽  
Doppler Spectroscopy

scholarly journals Temperature and Lifetime Measurements in the SSX Wind Tunnel

Plasma ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 229-241 ◽  
Author(s):  
Manjit Kaur ◽  
Kaitlin Gelber ◽  
Adam Light ◽  
Michael Brown
Keyword(s):  
Simple Model ◽  
Wind Tunnel ◽  
Electron Temperature ◽  
Langmuir Probe ◽  
Vacuum Ultraviolet ◽  
Lifetime Measurements ◽  
Line Intensities ◽  
Thermal Equilibration ◽  
Local Measurements ◽  
Doppler Spectroscopy

We describe ion and electron temperature measurements in the Swarthmore Spheromak Experiment (SSX) MHD wind tunnel with the goal of understanding limitations on the lifetime of our Taylor-state plasma. A simple model based on the equilibrium eigenvalue and Spitzer resistivity predicted the lifetime satisfactorily during the first phase of the plasma evolution. We measured an average T e along a chord by taking the ratio of the C I I I 97.7 nm to C I V 155 nm line intensities using a vacuum ultraviolet (VUV) monochromator. We also recorded local measurements of T e and n e using a double Langmuir probe in order to inform our interpretation of the VUV data. Our results indicated that the plasma decayed inductively during a large part of the evolution. Ion Doppler spectroscopy measurements suggested that ions cooled more slowly than would be expected from thermal equilibration with the electrons, which maintained a constant temperature throughout the lifetime of the plasma.

The B̃ 1E‘ state of ammonia: Sub‐Doppler spectroscopy at vacuum ultraviolet energies

1988 ◽  
Vol 89 (4) ◽  
pp. 1754-1761 ◽  
Author(s):  
M. N. R. Ashfold ◽  
R. N. Dixon ◽  
N. Little ◽  
R. J. Stickland ◽  
C. M. Western
Keyword(s):  
Vacuum Ultraviolet ◽  
Doppler Spectroscopy

Oscillator Strength Measurements in the Vacuum-Ultraviolet by the Emission Method

1988 ◽  
Vol 102 ◽  
pp. 353-356
Author(s):  
C. Goldbach ◽  
G. Nollez
Keyword(s):  
Oscillator Strength ◽  
Vacuum Ultraviolet ◽  
Oscillator Strengths ◽  
Emission Method ◽  
Absolute Scale ◽  
Good Agreement

AbstractThe principles and the realization of an experiment devoted to oscillator strength measurements in the vacuum-ultraviolet by the emission method are briefly presented. The results obtained for the strong multiplets of neutral nitrogen and carbon in the 1200-2000 Å range yield an absolute scale of oscillator strengths in good agreement with the most recent calculations.

VACUUM ULTRAVIOLET RADIOMETRY

1978 ◽  
Vol 39 (C4) ◽  
pp. C4-227-C4-232 ◽  
Author(s):  
JAMES A. R. SAMSON
Keyword(s):  
Vacuum Ultraviolet
Sign in / Sign up

Export Citation Format

Share Document