Molecular Dynamics Simulations of Motion of Paramagnetic Oxygen Molecules in Air by Magnetic Force
Abstract
Oxygen molecules with integer spin in air move upward to higher magnetic fields along magnetic field gradient. This motion is disturbed by the collisions between oxygen molecules and other diamagnetic molecules. To magnetically separate oxygen molecules in air, it is necessary to suppress the collisions with diamagnetic molecules and enhance the transport by magnetic force. In our study, molecular dynamics calculations were carried out to investigate temperature and pressure dependence of the ratio of oxygen molecules to air transported along magnetic field gradient. At temperature T=300K, pressure P=0.1MPa and magnetic field H=20T, the ratio of oxygen molecules to air transported along magnetic field gradient increased from 20% without magnetic fields to about 22% in magnetic fields; at T=200K and P=0.1MPa, to 25%; at T=300K and P=0.005MPa, to 24%. This indicates that the transport of oxygen molecules in air by magnetic force was promoted at lower temperature and pressure.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 2000
- Bibcode:
- 2000APS..MARY14013T