TY - JOUR AU - Thomas Gentile AU - T Walker AU - E Babcock AU - Qiang AU - Wangchun Chen C2 - Physical Review A DA - 2014-07-02 DO - https://doi.org/10.1063/1.4886583 LA - en PB - Physical Review A PY - 2014 TI - On the limits of spin-exchange optical pumping of 3He ER -