A09 音響キャビテーションの ⁴⁰K 放射壊変への影響

抄録

The high temperature and high pressure conditions at cavitation bubble collapse can influence the decay of radioactive atoms. We investigated the effect of acoustic cavitation on electron caption of ⁴⁰K. Gamma-ray spectrum from 3 M KCl aqeous solution under acoustic cavitation at 85 kHz and 90W. Some data showing the increase in the counts of the gammma-ray spectrum were obtained, however, further experiments are needed to conclude that the increase was due to the enhancement of the radioactive decay or to electric or mechanical noise.