Anisotropic hyperfine interactions limit the efficiency of spin-exchange optical pumping of He3 nuclei

Journal Article (Journal Article)

We use accurate ab initio and quantum scattering calculations to demonstrate that the maximum He3 spin polarization that can be achieved in spin-exchange collisions with potassium (K39) and silver (Ag107) atoms is limited by the anisotropic hyperfine interaction. We find that spin exchange in Ag-He collisions occurs much faster than in K-He collisions over a wide range of temperatures (10-600 K). Our analysis indicates that measurements of trap loss rates of S2 atoms in the presence of cold He3 gas may be used to probe anisotropic spin-dependent interactions in atom-He collisions. © 2011 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Tscherbul, TV; Zhang, P; Sadeghpour, HR; Dalgarno, A

Published Date

  • July 8, 2011

Published In

Volume / Issue

  • 107 / 2

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.107.023204

Citation Source

  • Scopus