Pressure dependence of wall relaxation in polarized He3 gaseous cells
Abstract
We have observed a linear pressure dependence of longitudinal relaxation time T1 at 4.2 and 295 K in gaseous He3 cells made of either bare Pyrex glass or Cs- or Rb-coated Pyrex due to paramagnetic sites in the cell wall. The paramagnetic wall relaxation is previously thought to be independent of He3 pressure. We develop a model to interpret the observed wall relaxation by taking into account the diffusion process, and our model gives a good description of the data.
- Publication:
-
Physical Review A
- Pub Date:
- June 2011
- DOI:
- 10.1103/PhysRevA.83.061401
- arXiv:
- arXiv:1203.3897
- Bibcode:
- 2011PhRvA..83f1401Z
- Keywords:
-
- 33.25.+k;
- 51.20.+d;
- 75.70.Rf;
- 82.65.+r;
- Nuclear resonance and relaxation;
- Viscosity diffusion and thermal conductivity;
- Surface magnetism;
- Surface and interface chemistry;
- heterogeneous catalysis at surfaces;
- Physics - Atomic Physics
- E-Print:
- Physical Review A 83, 061401(R) (2011)