Open AccessDirect observation of Bose-Einstein condensation transition in 87Rb atomic gases in tightly confinement QUIC trap
Author(s) -
Zhen Xu,
Shuyu Zhou,
Qiuzhi Qu,
Hua Liu,
Shanyu Zhou,
Yuzhu Wang
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.5643
Subject(s) - bose–einstein condensate , physics , trap (plumbing) , condensation , atomic physics , phase transition , trapping , evaporative cooler , thermal , condensed matter physics , thermodynamics , ecology , biology , meteorology
By evaporative cooling in QUIC trap, Bose-Einstein condensate (BEC) was achieved with 2×105 87Rb atoms in |F=2, mF=2〉 state. We have demonstrated the criterion of BEC transition by the variation of the axial size of the atoms in tight confinement, and observed phase transition from thermal atomic gases to Bose-Einstein condensate, and measured the shift of aspect ratio of BEC during free expansion, which compared with theoretical prediction.