Evidence for solid krypton bubbles in copper, nickel and gold at 293K

Abstract

Recent work by other investigators showing solid xenon and argon precipitates in aluminium has been extended in the present Letter to an examination of the structure of krypton bubbles in copper, nickel and gold. As in previous work, the inert-gas bubbles are found in the solid face-centred cubic phase epitaxial with the host crystal. Electron microscopy diffraction patterns have been used to show the solid to gas transition during heating, and the subsequent recrystallisation on cooling. The results on the solid inert-gas bubbles are a dramatic indication of the high pressure involved; these pressures, which vary with the shear modulus of the metal, are a direct consequence of the bubble growth processes.