Hilbert Huang transform (HHT) based time series analysis was carried out on nonlinear floating potential fluctuations obtained from hollow cathode glow discharge plasma in the presence of anode glow. HHT was used to obtain contour plots and the presence of nonlinearity was studied. Frequency shift with time, which is a typical nonlinear behaviour, was detected from the contour plots. Various plasma parameters were measured and the concepts of correlation coefficients and the physical contribution of each intrinsic mode function have been discussed. Physically important quantities such as instantaneous energy and their uses in studying physical phenomena such as intermittency and non-stationary data have also been discussed.
REFERENCES
1.
Md.
Nurujjaman
, A. N.
Sekar Iyengar
, and P.
Parmananda
, Phys. Rev. E
78
, 026406
(2008
).2.
3.
J. C.
Sprott
, Chaos and Time Series Analysis
(Oxford University Press
, New York
, 2003
), Vol. 78
, p. 123
.4.
Md.
Nurujjaman
, R.
Narayanan
, and A. N.
Sekar Iyengar
, Phys. Plasmas
16
, 102307
(2009
).5.
Md.
Nurujjaman
, R.
Narayanan
, and A. N.
Sekar Iyengar
, Chaos
17
, 043121
(2007
).6.
N. E.
Huang
, Z.
Shen
, S. R.
Long
, M. C.
Wu
, H. H.
Shih
, Q.
Zheng
, N. C.
Yen
, C. C.
Tung
, and H. H.
Liu
, Proc. R. Soc. London, Ser. A
454
, 903
(1998
).7.
Z. K.
Peng
, P. W.
Tse
, and F. L.
Chu
, Mech. Syst. Signal Process.
19
, 974
(2005
).8.
K.
Gupta
, A.
Prasad
, and H. P.
Singh
, Phys. Rev. E
77
, 046220
(2008
).9.
R.
Jha
, D.
Raju
, and A.
Sen
, Phys. Plasmas
13
, 082507
(2006
).10.
N.
Huang
, M. C.
Wu
, S. R.
Long
, S. S. P.
Shen
, W.
Qu
, P.
Gloersen
, and K. I.
Fan
, Proc. R. Soc. London, Ser. A
459
, 2317
(2003
).11.
J. M.
Dawson
, Phys. Rev.
113
, 383
(1959
).12.
G. J.
Morales
and T. M.
ONeil
, Phys. Rev. Lett.
28
, 417
(1972
).13.
J.
Vaclavik
and K.
Appert
, Phys. Fluids
23
, 1801
(1980
).14.
O.
Ishihara
and A.
Hirose
, Phys. Fluids
27
, 2429
(1984
).© 2013 American Institute of Physics.
2013
American Institute of Physics
You do not currently have access to this content.