Parametric expressions are used to calculate the isothermal susceptibility, specific heat, order parameter, and correlation length along the critical isochore and coexistence curve from the asymptotic region to crossover region.

isothermal susceptibilitycoexistence curveliquid v↗

NASA NTRS2002

Thermodynamic measurements near the 3He liquid-gas critical point: the MISTE flight experiment

Explore the source record for details and available documents.

critical phenomena liquid-gas critical point↗

NASA NTRS2002

Test of a new field-theoretical crossover equation-of-state

A new field-theoretical crossover equation-of-state model provides a bridge between the asymptotic behavior close to a liquid-gas critical point and the expected mean field behavior farther away.

equation-of-state critical phenomena liquid-gas cr↗

NASA NTRS2002

Test of Yang-Yang anomaly in (sup 3)He near its liquid-vapor critical point

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3He liquid-vapor critical point Yang-Yang anomaly↗

NASA NTRS2002

MISTE flight experiment status

The MISTE flight experiment has made significant scientific and technical progress in preparing for a future microgravity flight. We are collaborating with several theoretical modeling groups that have developed crossover (equation-of-state) models for predicting thermodynamic behavior near the liquid-gas critical point. Several of these models have already been used to test experimental measurements of the heat capacity at constant volume, isothermal susceptibility, and coexistence curve in the crossover region near the 3He liquid-gas critical point. A brief description of these models and a representative fit to experimental data will be presented. In collaboration with Mission Research Corporation, MISTE has been testing a new small pneumatic valve for use at low temperatures. The results of recent successful low temperature actuation tests will also be discussed.

critical phenomena liquid-gas critical point↗

NASA NTRS2001

MISTE: microgravity experiment to measure the heat capacity and susceptibility near a liquid gas critical point

A description of the experimental approach for performing critical point measurements is discussed and results of ground based measurements in preparation for the flight experiment are presented.

critical↗

NASA NTRS2001

Test of sigma(sup 4) model predictions near the (sup 3)He liquid-gas critical point

NASA is supporting the development of an experiment called MISTE (Microgravity Scaling Theory Experiment) for a future International Space Station mission.

critical phenomena liquid-gas critical point↗

NASA NTRS2001

Application of a phi-4 model to the liquid-gas critical point of helium-3

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critical phenomena helium-3 specific heat suscepti↗

NASA NTRS2000

Test of phi(sup 2) model predictions near the (sup 3)He liquid-gas critical point

NASA is supporting the development of an experiment called MISTE (Microgravity Scaling Theory Experiment) for future International Space Station mission. The main objective of this flight experiment is to perform in-situ PVT, heat capacity at constant volume, C(sub v) and chi(sub tau), measurements in the asymptotic region near the (sup 3)He liquid-gas critical point.

critical phenomena liquid-gas critical point↗

NASA NTRS2000

Progress in the development of the MISTE flight experiment

The MISTE flight experiment plans to measure the specific heat at constant volume, C(sub v), and isothermal susceptibility chi(sup tau), near the (sup 3)He liquid-gas critical point. A new method for precisely determining the critical temperature is being evaluated and will be presented.

critical phenomena liquid-gas critical point↗