Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2017-09-14

Journal: PHYSICAL CHEMISTRY CHEMICAL PHYSICS

Included Journals: SCIE、PubMed

Volume: 19

Issue: 34

Page Number: 22926-22933

ISSN: 1463-9076

Abstract: 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.