Tsikata, E.Campbell, W. C.Hummon, M. T.Lu, Hsin-IDoyle, John2012-06-122010Tsikata, E., W. C. Campbell, M. T. Hummon, Hsin-I Lu, and John M. Doyle. 2010. Magnetic trapping of NH molecules with 20 s lifetimes. New Journal of Physics 12(6): 065028.1367-2630http://nrs.harvard.edu/urn-3:HUL.InstRepos:8866868Buffer 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\(^{−3}\).en-USatomic and molecular physicsJournal Article2012-06-1210.1088/1367-2630/12/6/065028