Pressure dependence of wall relaxation in polarized He3 gaseous cells

W. Zheng; H. Gao; Q. Ye; Y. Zhang

doi:10.1103/PhysRevA.83.061401

Pressure dependence of wall relaxation in polarized He3 gaseous cells

W. Zheng^*, H. Gao, Q. Ye, Y. Zhang

^*Corresponding author for this work

Triangle Universities Nuclear Laboratory

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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.

Original language	English
Article number	061401
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	83
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.83.061401
Publication status	Published - 16 Jun 2011
Externally published	Yes

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Zheng, W., Gao, H., Ye, Q., & Zhang, Y. (2011). Pressure dependence of wall relaxation in polarized He3 gaseous cells. Physical Review A - Atomic, Molecular, and Optical Physics, 83(6), Article 061401. https://doi.org/10.1103/PhysRevA.83.061401

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N2 - 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.

AB - 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.

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Pressure dependence of wall relaxation in polarized He3 gaseous cells

Abstract

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