[01] D. P. Nandedkar, Department of Electrical Engineering, Indian Institute of Technology, Bombay, Powai, Mumbai, India.

D.C. noise in the plasma is generated due to the charge-oscillations set in the colliding ions by the electrons of the electron-ion pairs in equilibrium with the ambient temperature of the plasma. These electron-ion pairs are formed on otherwise free space. This d.c. noise radiation is a coupled one having a maximum value of the frequency denoted by a cut-off frequency which is determined by the density of ions in the plasma. The d.c. noise radiation temperature for this coupled noise is 851⁰K at ambient temperature of 273⁰K for singly charged particles of ionized hydrogen type gas molecules with low charge-carrier average density of electrons or ions i.e Ne~ 10¹⁵m^-3 in a typical star dust of interstellar space(s) in the galaxy/galaxies with a characteristic temperature of 1021⁰K having a cut off frequency of 21.29 x 10/sup>12 Hz, where it is assumed that there exit a randomly oriented average d.c. electric field of 10 V/m due to accumulation of charge-carriers of oppositely charged particles in some distant places in the galaxy/galaxies.

Electron, Ion, Collisions, Charge-Oscillations, Coupled-Noise, D.C.-Noise, Radiation, Radiation-Temperature

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