Document Number (FOIA) /ESDN (CREST):
CIA-RDP86-00513R000100720015-5
Body:
m !Jq WB
)/EWO(t)
-xk-ACC:'NJh AF6O1W2k
-'AVfHOR: AkUlicbey,.._Y_,A._
itut AN 8
ORGe. Acoustics Institute,, AN SSSR, Moscow (Akusticheskiy inst R)
TITLE: Wdration of ions and cavitation pfrengtb of water
SOURCE: Akusticbeskiy zhurnal., v. 12, ncP. 2, 1966, i6o-166
TOPIC TAGS: cavitation, hydration, water, ultrasonic effecto ion concentration
ABSTRACT: The author discusses experimental data on the basis of which it is pos-
sible to determine the forces which act on a gas bubble in water. An experimental
measurement was made of the threshold pressure of ultrasonic cavitation as the con-
centration of different ions in water is varied. The cavitation far from the
radiating surfaces in the water was produced by the procedure proposed by W. Y.
Galloway (J. Acoust. Soc. A~merica 1954, v. 26, no. 5, 849-85T) - The cavitation was
produced at a frequency of 22.5 kes with barium titanate transducer. The experi-
mental setup and procedure are described in detail. The experiments consisted essen-
tially of determining the-threshold pressure of the cavitation as the concentration
of the ions of di eff% 0
MT, .4pally increasea. The experiments show that
.4al a !as gra
introduction nX 't
:"vjane I-. ions, which produce negative hydration,
in distilled water Ce-creases its cavitation strength, and that the effect depends ap-
preciably on the gas content of the water. If ions producing positive hydration are
introduced (bWF+, Li*, Na+) there is no effect on the cavitation strength of vater.
ACC NR%
'