| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Sao Paulo, Inst Fis Sao Carlos, Caixa Postal 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS; v. 53, n. 6 MAR 28 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
In this work, we present lifetime measurements of nS states of Rb as a function of the principal quantum number (40 <= n <= 70) using a sample of cold atoms held in a magneto-optical trap, which is performed in a finite size metal vacuum chamber. The Rydberg states are excited through a two-photon transition, and detected by pulsed field ionization. Our measurements are larger than the predictions by well established theoretical model (1984 Phys. Rev. A 30 2881 and 2009 Phys. Rev. A 79 052504). We have implemented a theoretical model, which considers the vacuum chamber as a lossy Fabry-Perot cavity with a discrete spectrum, and compared with experimental results. Such comparison indicates that the blackbody radiation contribution on Rydberg state lifetime can be decreased by using a small size metal cavity, without the need of cryogenic environment. This effect may have application in experiments where longer Rydberg lifetimes are required. (AU) | |
| FAPESP's process: | 13/02816-8 - Manipulation of atomic collisions in optical traps |
| Grantee: | Luis Gustavo Marcassa |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/21311-2 - Cold rydberg atoms: few body and high order interaction effects |
| Grantee: | Bárbara da Fonseca Magnani |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |