Abstract
We present here our experimental results on transfer of laser-cooled atom cloud to a quadrupole magnetic trap. We show that by choosing appropriately the ratio of potential energy in magnetic trap to kinetic energy of cloud in molasses, we can obtain the maximum phase-space density in the magnetic trap. These results guide us to choose the value of current to be switched in the quadrupole coils used for magnetic trapping for a given temperature of the cloud after molasses. This study is also useful to set the initial phase-space density of the cloud before evaporative cooling.
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Acknowledgements
The authors thank L Jain, V P Bhanage, P P Deshpande, M A Ansari, H R Bundel and C P Navathe (all are from Laser Electronics Support Division, RRCAT) for the development of the controller system for the set-up and H S Vora, Laser Electronics Support Division, RRCAT, for providing the image-processing software.
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RAM, S.P., TIWARI, S.K., MISHRA, S.R. et al. Optimization of transfer of laser-cooled atom cloud to a quadrupole magnetic trap. Pramana - J Phys 82, 419–423 (2014). https://doi.org/10.1007/s12043-014-0700-2
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DOI: https://doi.org/10.1007/s12043-014-0700-2