[1] C. Monroe, W. Swann, H. Robinson et al.. Very cold trapped atoms in a vapor cell[J]. Phys. Rev. Lett., 1990, 65(13): 1571~1574
[2] S. Chu, L. Hollberg, J. E. Bjorkholm et al.. Three-dimensional viscous confinement and cooling of atoms by resonance radiation pressure[J]. Phys. Rev. Lett., 1985, 55(1): 48~51
[3] E. Guillot, P. E. Pottie, N. Dimarcq. Three-dimensional cooling of cesium atoms in a reflecting copper cylinder[J]. Opt. Lett., 2001, 26(21): 1639~1641
[8] R. Li, K. Gibble. Phase variations in microwave cavities for atomic clocks[J]. Metrologia, 2004, 41(6): 376~386
[9] J. P. Wittke, R. H. Dicke. Redetermination of the hyperfine splitting in the ground state of atomic hydrogen[J]. Phys. Rev., 1956, 103(3): 620~631
[10] P. D. Lett, R. N. Watts, C. I. Westbrook et al.. Observation of atoms laser cooled below the Doppler limit[J]. Phys. Rev. Lett., 1988, 61(2): 169~172
[11] D. R. Meacher, D. Boiron, H. Metcalf et al.. Method for velocimetry of cold atoms[J]. Phys. Rev. A, 1994, 50(3): R1992~R1994
[12] H. D. Cheng, W. Z. Zhang, H. Y. Ma et al.. Laser cooling of rubidium atoms from background vapor in diffuse light[J]. Phys. Rev. A, 2009, 79(2): 023407
[14] F. X. Esnault, N. Rossetto, D. Holleville et al.. HORACE: a compact cold atom clock for Galileo[J]. Advances in Space Research, 2011, 47(5): 854~858
[15] X. C. Wang, H. D. Cheng, B. C. Zheng et al.. Integrating sphere cold atom clock with cylindrical microwave cavity[C]. Frequency Control and the European Frequency and Time Forum (FCS), IEEE, 2011, San Fransisco, CA,USA
[16] Xucheng Wang, Huadong Cheng, Ling Xiao et al.. Measurement of spatial distribution of cold atoms in an integrating sphere[J]. Chin. Phys. Lett., 2012, 29(2): 023701
[17] T. M. Brzozowshi, M. Maczynska, M. Zawada et al.. Time-of-flight measurement of the temperature of cold atoms for short trap-probe beam distances[J]. J. Opt. B: Quantum S. O., 2002, 4(1): 62~66