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Momentum distributions in hcp, bcc, and liquid /sup 4/He

Conference ·
OSTI ID:6761137
Using Deep Inelastic Neutron Scattering we have measured the nuclear momentum distribution in hcp, bcc and liquid /sup 4/He at constant density over a temperature range 0.96K < T < 4.0K. We find no temperature dependence of the momentum distribution in the hcp solid or the liquid. We also find no difference between the hcp, bcc and liquid phases. The average kinetic energy per atom is lower than the best present theories predict.
Research Organization:
Illinois Univ., Urbana (USA); Argonne National Lab., IL (USA)
DOE Contract Number:
AC02-76ER01198; W-31109-ENG-38
OSTI ID:
6761137
Report Number(s):
CONF-840842-21; ON: DE84014679
Country of Publication:
United States
Language:
English