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论文类型：期刊论文

发表时间：2017-09-14

发表刊物：PHYSICAL CHEMISTRY CHEMICAL PHYSICS

收录刊物：PubMed、SCIE

卷号：19

期号：34

页面范围：22926-22933

ISSN号：1463-9076

摘要：The atom-atom-ion three-body recombination (TBR) of mixed He-4 and X- (X = H or D) systems is investigated by solving the Schrodinger equation using the adiabatic hyperspherical representation method. It is shown that the dominant products after a TBR in the ultracold limit (E <= 0.1 mK x kB) are different for the two systems. For the (HeHeH-)-He-4-He-4 system, the rate of TBR into the (HeH-)-He-4 ion is nearly two orders of magnitude larger than that of TBR into the neutral He-4(2) molecule. In contrast, the yield of He-4(2) is a little higher than that of (HeD-)-He-4 for the (HeHeD-)-He-4-He-4 system. Furthermore, since the adiabatic potentials become more attractive and the nonadiabatic couplings become much stronger by substituting D for H in the (HeHeH-)-He-4-He-4 system, the total TBR rate for the (HeHeD-)-He-4-He-4 system is nearly two orders of magnitude larger than that for the (HeHeH-)-He-4-He-4 system.