X-ray studies of structural changes of impurity-helium solids. Academic Article uri icon

abstract

  • We have performed studies of the formation and evolution of samples of Im-Helium (Im=Ne, D2, N2) solids obtained by allowing a mixed beam of helium and impurity molecules to fall onto the surface of superfluid helium. Clusters consisting of single impurity molecules and/or small aggregates of the molecules surrounded by layers of solid helium agglomerate to form porous solids. These solids have been studied by x-ray diffraction techniques. As the solids were heated above their formation temperature of T=1.5 K, the small aggregates or clusters of impurities tended to form larger clusters, which x-ray diffraction revealed to be nanocrystallites ranging in size from 3 to 6 nm.

published proceedings

  • JOURNAL OF LOW TEMPERATURE PHYSICS

author list (cited authors)

  • Kiselev, S. I., Khmelenko, V. V., Lee, D. M., Kiryukhin, V., Boltnev, R. E., Gordon, E. B., & Keimer, B.

citation count

  • 11

complete list of authors

  • Kiselev, SI||Khmelenko, VV||Lee, DM||Kiryukhin, V||Boltnev, RE||Gordon, EB||Keimer, B

publication date

  • January 2002