Abstract
We trap 87Rb atoms in a spherical magnetic quadrupole potential consisting of a pair of anti-Helmholtz coils. The number of trapped atoms is 2.16(7)×108, and the lifetime is 26 seconds. The number, the temperature and the size of the atoms in a magnetic trap are controlled by the forced rfevaporative cooling technique. We obtain a sub-Doppler temperature of 33.7(5) μK in these atoms at an evaporation frequency of 4.2 MHz in the magnetic quadrupole trap. We discuss the properties of the atoms in the spherical magnetic quadrupole trap and the results of the rf-evaporation process.
This is a preview of subscription content, log in via an institution to check access.
References
E. L. Raab, M. Prentiss, A. Cable, S. Chu and D. E. Pritchard, Phys. Rev. Lett. 59, 2631 (1987).
W. D. Phillips, P. L. Gould and P. D. Lett, Science 239, 877 (1987).
A. L. Migdall, J. V. Prodan, W. D. Phillips, T. H. Bergeman and H. J. Metcalf, Phys. Rev. Lett. 54, 2596 (1985).
W. Petrich, M. H. Anderson, J. R. Ensher and E. A. Cornell, Phys. Rev. Lett. 74, 3352 (1995).
N. Masuhara, J. M. Doyle, J. C. Sandberg, D. Kleppner and T. J. Greytak, Phys. Rev. Lett. 61, 935 (1988).
K. B. Davis, M. Mewes, M. A. Joffe, M. R. Andrews and W. Ketterle, Phys. Rev. Lett. 74, 5202 (1995).
W. Ketterle and N. J. Van Druten, Adv. At. Mol. Opt. Phys. 37, 181 (1996).
M. H. Anderson, J. R. Ensher, M. R. Matthews, C. E. Wieman and E. A. Cornell, Science 269, 198 (1995).
K. B. Davis, M -O. Mewes, M. R. Andrews, M. J. Van Druten, D. S. Durfee, D. M. Kum and W. Ketterle, Phys. Rev. Lett. 75, 3969 (1995).
K. B. Davis, M -O. Mewes and W. Ketterle, Appl. Phys. B 60, 155 (1995).
Y -J. Lin, A. R. Perry, R. L. Compton, I. B. Spielman, and J. V. Porto, Phys. Rev. A 79, 063631 (2009).
O. J. Luiten, H. G. C. Werij, I. D. Setija, M. W. Reynolds, T. W. Hijmans and J. T. M. Walraven, Phys. Rev. Lett. 70, 544 (1993).
T. Esslinger, I. Bloch and T. W. Hänsch, Phys. Rev. A 58, R2664 (1998).
H. J. Lewandowski, D. M. Harber, D. L. Whitaker and E. A. Cornell, J. Low Temp. Phys. 132, 309 (2003).
H. J. Metcalf and P. van der Straten, Evaporative Cooling of Trapped Atoms (Springer, New York, 1999).
C. J. Pethick and H. Smith, Bose-Einstein Condensation in Dilute Gases (Cambridge University Press, Cambridge, 2002).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yum, D., Park, J., Lee, W. et al. Systematic study of the rf-induced evaporation of 87Rb atoms in a spherical magnetic quadrupole trap. Journal of the Korean Physical Society 60, 1–5 (2012). https://doi.org/10.3938/jkps.60.1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3938/jkps.60.1