Absorption by ground-state lead atoms of the 283.3-nm resonant line from a lead hollow cathode lamp: an absolute number density calibration

1989 ◽  
Vol 93 (21) ◽  
pp. 7336-7338 ◽  
Author(s):  
John W. Simons ◽  
Richard C. Oldenborg ◽  
Steven L. Baughcum
1972 ◽  
Vol 50 (4) ◽  
pp. 395-403 ◽  
Author(s):  
R. Stringat ◽  
C. Athénour ◽  
J. L. Féménias

The orange system of ScO has been reanalyzed as a 2Π → 2Σ transition. We have observed all the branches which are compatible with the selection rules ΔJ = 0, ± 1. We have not detected the hyperfine structure in the excited state, the coupling case being therefore aβ. The magnetic hyperfine interaction inducing the ground state doubling is the only one which appears; it has been analyzed by other authors who have shown that the coupling case for this state is of the type bβS.The use of an alloy hollow-cathode lamp, cooled with liquid nitrogen, has enabled us to improve the frequency measurements. The values of the constants have been obtained by a method by which, working directly with the Hamiltonian, the introduction of each parameter can be justified. The study of the Λ doubling in 2Π3/2 and 2Π1/2 levels leads us to values of ξ and η very close to those predicted for a pure precession case.


1983 ◽  
Vol 44 (C7) ◽  
pp. C7-479-C7-487 ◽  
Author(s):  
M. Broglia ◽  
F. Catoni ◽  
P. Zampetti

2010 ◽  
Vol 4 (3) ◽  
pp. 234-239
Author(s):  
V. I. Melnikova ◽  
M. S. Izvolskaia ◽  
S. N. Voronova ◽  
M. M. Sharipova ◽  
E. M. Rukin ◽  
...  

1980 ◽  
Vol 34 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Tsutomu Araki ◽  
John P. Walters ◽  
Shigeo Minami

Transient emission characteristics of a hollow-cathode lamp driven by a pulsed current in combination with a radio-frequency burst signal are described. The radio-frequency field excites electrode vapor that is transiently produced by the initial pulsed current discharge. To evaluate the performance of this radio-frequency injected lamp; peak line intensity, line width and line stability of Cu atomic and ionic emissions are compared to those from dc and pulsed current lamps. Results indicate that the radio-frequency lamp is superior to the conventional pulsed lamp in these three factors. However, due to experimental limitations of commercial lamps under applied radio-frequency voltage, the maximum possible intensity enhancement was not achieved. Atomic absorption working curves are also compared to anticipate practical situations. The steep and linear curve obtained using the radio-frequency lamp suggests its important role in practical analysis.


2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Duo Pan ◽  
Xiaobo Xue ◽  
Haosen Shang ◽  
Bin Luo ◽  
Jingbiao Chen ◽  
...  

2018 ◽  
Vol 16 (3) ◽  
pp. 033001
Author(s):  
Pengyuan Chang Pengyuan Chang ◽  
Bo Pang Bo Pang ◽  
Yisheng Wu Yisheng Wu ◽  
Jingbiao Chen Jingbiao Chen

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