Photoassociation Reactions H+D+ and H++D in Ultrashort Pulse Laser Fields
NIU Ying-Yu1,2, WANG Rong2, LIU Li1, CONG Shu-Lin1
1Department of Physics, Dalian University of Technology, Dalian 1160242Department of Mathematics and Physics, Dalian Jiaotong University, Dalian 116028
Photoassociation Reactions H+D+ and H++D in Ultrashort Pulse Laser Fields
NIU Ying-Yu1,2;WANG Rong2;LIU Li1;CONG Shu-Lin1
1Department of Physics, Dalian University of Technology, Dalian 1160242Department of Mathematics and Physics, Dalian Jiaotong University, Dalian 116028
摘要The photoassociation reactions H+D+ and H++D induced by the one- and two-colour laser pulses are theoretically studied. The reactions occur through two channels: (i) H(1S)+D+ →HD+, and (ii) H++D(1S)→HD+. The reaction probability through channel (ii) is higher than through channel (i). The populations of the products H++D and HD+ and the ratio of H++D to HD+ can be controlled by laser pulses. The two-colour laser pulses can more efficiently lower the dissociation probability and therefore enhance the yield ratio of the product HD+.
Abstract:The photoassociation reactions H+D+ and H++D induced by the one- and two-colour laser pulses are theoretically studied. The reactions occur through two channels: (i) H(1S)+D+ →HD+, and (ii) H++D(1S)→HD+. The reaction probability through channel (ii) is higher than through channel (i). The populations of the products H++D and HD+ and the ratio of H++D to HD+ can be controlled by laser pulses. The two-colour laser pulses can more efficiently lower the dissociation probability and therefore enhance the yield ratio of the product HD+.
[1] Grasbon F, Walther G G, Walther H, Villoresi P, SansoneG, Stagira S, Nisoli M and Silvestri S D 2003 Phys. Rev.Lett. 91 173003 [2] Frasinski L J, Posthumus J H, Plumridge J, Codling K,Taday P F and Langley A J 1999 Phys. Rev. Lett. 833625 [3] Sun Z G, Liu H P, Lou N Q and Cong S L 2003 Chem. Phys.Lett. 369 374 [4] Magnier S, Persico M and Rahman N 1999 Phys. Rev. Lett. 83 2159 [5] Faucher O, Hertz E, Lavorel B, Chaux R, Dreier T, Berger H and Charalambidis~D 1999 J. Phys. B 32 4485 [6] Wang S M, Yuan K J, Niu Y Y, Han Y C and Cong S L 2006 Phys. Rev. A 74 043406 [7] Wang S M, Cong S L, Yuan K J and Niu Y Y 2006 Chem.Phys. Lett. 417 164 [8] Korolkov M V, Manz J, Paramonov G K and Schmidt B 1996 Chem. Phys. Lett. 260 604 [9]Vardi A, Abrashkevich D, Frishman E and Shapiro M 1997 J.Chem. Phys. 107 6166 [10]Korolkov M V and Schmidt B 2002 Chem. Phys. Lett. 361 432 [11]Backhaus P, Manz J and Schmidt B 1998 J. Phys. Chem. A 102 4118 [12]Mackie M and Javanainen J 1999 Phys. Rev. A 60 3174 [13]Sage J M, Sainis S, Bergeman T and DeMille D 2005 Phys.Rev. Lett. 94 203001 [14]Vatasescu M, Dulieu O, Kosloff R and Masnou-Seeuws F 2001 Phys. Rev. A 63 033407 [15]Niu Y Y, Wang S M and Cong S L 2006 Chem. Phys. Lett. 428 7 [16]Carrington A and Kennedy R A 1985 Mol. Phys. 56935 [17]Paramonov G K 1991 Phys. Lett. A 152 191 [18]Moss R E and Sadler I A 1987 Mol. Phys. 61 905 [19]Feit M D, Fleck J A and Steiger A 1982 J. Comput.Phys. 47 412 [20] Heather R W 1991 Comput. Phys. Commun. 63 446 [21] Roudnev V, Esry B D and Ben-Itzhak I 2004 Phys.Rev. Lett. 93 163601