Reaction of semiconductor materials and water on the influence of radiation, cosmophysical and geophysical factors of environment

Lobanov A.V.1, Tsetlin V.V.1, Faynshteyn G.S.1, Alekseev V.A.2
  1. Institute of Biomedical Problems RAS, Russia
  2. Troitsk Institute of Innovative and Thermonuclear Research, Russia

   During experimental studies of semiconductor materials and pure water
   conductivity properties, undergoing electromagnetic and ionizing radiation
   of low power, variations of dark currents were found. Analysis of the
   data, obtained during 2006-2013, showed coincidence of the periods and the
   moments of emergence of these variations with cosmophysical and
   geophysical events of the surrounding enviromnent. So, it was noticed that
   during and after the solar eclipse on March 29, 2006, fluctuations of
   electronic-transport properties with the period of 56 min, which were
   usually imposed on current daily dynamics, developed in water. The
   brightest manifestation of influence of environment cosmophysical and
   geophysical factors is the existence of current diurnal dynamics in water
   and semiconductor materials. Current changes in materials occur during
   firm semiconductor plate connection in a diode option and during constant
   voltage of 0.5-2.5V. It is possible to distinguish the periods of 54 min.,
   360 min., 24 hours, 3.5 and 13.7 days in the revealed periodicity of
   current fluctuations. The possible mechanism of appearance of current
   fluctuations is electric potential change on electrodes in water
   electrochemical cells and in the band of electric contacts of a
   semiconductor plate and in p-n transition, caused by electron emission
   from electrodes (in the case of water sensor) due to the change of water
   electroactivity or in the band of metal-semiconductor contact due to the
   change of work function of a semiconductor and metal (change of Fermi
   energy) and, as a result, change of concentration of the main charge
   carriers in the bulk of a semiconductor caused by external weak wave
   effect. On the basis of the results of the conducted research, further
   development of measuring instruments for the environment conditions of
   crews at space stations and aircrafts, applying water and semiconductor
   sensors, is supposed.