(Institute of Physics, 2010) Tsikata, E.; Campbell, W. C.; Hummon, M. T.; Lu, Hsin-I; Doyle, John
Buffer gas cooling is used to trap NH molecules with 1/e lifetimes exceeding 20 s. Helium vapor generated by laser desorption of a helium film is employed to thermalize 10(^5) molecules at a temperature of 500 mK in a 3.9 T magnetic trap. Long molecule trapping times are attained through rapid pumpout of residual buffer gas. Molecules experience a helium background gas density below 1×10(^{12}) cm(^{−3}).
