NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Numerical Studies of Properties of Confined HeliumWe carry out state of the art simulations of properties of confined liquid helium near the superfluid transition to a degree of accuracy which allows to make predictions for the outcome of fundamental physics experiments in microgravity. First we report our results for the finite-size scaling behavior of heat capacity of superfluids for cubic and parallel-plate geometry. This allows us to study the crossover from zero and two dimensions to three dimensions. Our calculated scaling functions are in good agreement with recently measured specific heat scaling functions for the above mentioned geometries. We also present our results of a quantum simulation of submonolayer of molecular hydrogen deposited on an ideal graphite substrate using path-integral quantum Monte Carlo simulation. We find that the monolayer phase diagram is rich and very similar to that of helium monolayer. We are able to uncover the main features of the complex monolayer phase diagram, such as the commensurate solid phases and the commensurate to incommensurate transition, in agreement with the experiments and to find some features which are missing from the experimental analysis.
Document ID
20050186701
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
Authors
Manousakis, Efstratios (Florida State Univ. Tallahassee, FL, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Proceedings of the 2003 NASA/JPL Workshop on Fundamental Physics in Space
Subject Category
Nonmetallic Materials
Funding Number(s)
CONTRACT_GRANT: NAG8-2867
CONTRACT_GRANT: NAG8-1773
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle20050186662Collected WorksProceedings of the 2003 NASA/JPL Workshop on Fundamental Physics in Space
No Preview Available