A proposed method of efficient laser trapping of neutral radium atoms
- Authors
- Park, Sung Jong; Kim, Young Jin; Shin, Taeksu; Kim, Yong Kyun; Kim, Sun Kee
- Issue Date
- Dec-2014
- Publisher
- IOP PUBLISHING LTD
- Citation
- JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, v.47, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
- Volume
- 47
- Start Page
- 1
- End Page
- 6
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/158331
- DOI
- 10.1088/0953-4075/47/24/245301
- ISSN
- 0953-4075
- Abstract
- We report theoretical studies of an efficient accumulation of Ra-225 atoms in a magneto-optical trap (MOT) from an atomic beam. The number of atoms in the trap is limited due to the large leakage into metastable D states from the cooling transition and the loss mechanism from collisions with the background gases and with other elements in the atomic beam. We propose a setup consisting of an efficient Zeeman slower, an optical atomic beam deflector, and an Egg-MOT, which provides a large capture velocity, e.g. the Zeeman slower capture velocity of 581 ms(-1) and the MOT capture velocity of 46 ms(-1). Furthermore, the pure slow atomic beam produced by the optical atomic beam deflector can maximize the number of trapped atoms and their lifetime in a ultra high vacuum chamber by minimizing the collisional loss. Our proposed setup allows for the search for a permanent electric dipole moment based on laser-cooled and trapped radium atoms with improved sensitivity.
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