Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions
We investigate Zeeman relaxation in cold Sb([superscript 4]S[subscript 3/2]∘)–He collisions in a magnetic field. Ensembles of >10[superscript 13] laser-ablated Sb atoms are cooled in cryogenic [superscript 4]He buffer gas to 800 mK and inelastic collisions are observed to equilibrate the m[subscr...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2013
|
| Online Access: | http://hdl.handle.net/1721.1/80299 https://orcid.org/0000-0002-9528-3044 |
| _version_ | 1811074981556125696 |
|---|---|
| author | Connolly, Colin B. Au, Yat Shan Chae, Eunmi Tscherbul, Timur V. Buchachenko, Alexei A. Ketterle, Wolfgang Doyle, John M. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Connolly, Colin B. Au, Yat Shan Chae, Eunmi Tscherbul, Timur V. Buchachenko, Alexei A. Ketterle, Wolfgang Doyle, John M. |
| author_sort | Connolly, Colin B. |
| collection | MIT |
| description | We investigate Zeeman relaxation in cold Sb([superscript 4]S[subscript 3/2]∘)–He collisions in a magnetic field. Ensembles of >10[superscript 13] laser-ablated Sb atoms are cooled in cryogenic [superscript 4]He buffer gas to 800 mK and inelastic collisions are observed to equilibrate the m[subscript J]-state distribution to the translational temperature. The ratio γ of momentum transfer to inelastic collision rates is measured to be ⩽9.1×10[superscript 2]. We also perform quantum scattering calculations of Sb–[superscript 4]He collisions, based on ab initio interaction potentials, that demonstrate significant anisotropy of the ground state induced by the spin-orbit interaction. Agreement is obtained between theory and experiment with a ≈10% increase in the ab initio potential depth. This work suggests that buffer-gas-cooled pnictogen atoms lighter than Sb can be loaded into a magnetic trap. |
| first_indexed | 2024-09-23T09:58:30Z |
| format | Article |
| id | mit-1721.1/80299 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:58:30Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/802992022-09-30T18:04:12Z Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions Connolly, Colin B. Au, Yat Shan Chae, Eunmi Tscherbul, Timur V. Buchachenko, Alexei A. Ketterle, Wolfgang Doyle, John M. Massachusetts Institute of Technology. Department of Physics MIT-Harvard Center for Ultracold Atoms Connolly, Colin B. Au, Yat Shan Chae, Eunmi Tscherbul, Timur V. Ketterle, Wolfgang Doyle, John M. We investigate Zeeman relaxation in cold Sb([superscript 4]S[subscript 3/2]∘)–He collisions in a magnetic field. Ensembles of >10[superscript 13] laser-ablated Sb atoms are cooled in cryogenic [superscript 4]He buffer gas to 800 mK and inelastic collisions are observed to equilibrate the m[subscript J]-state distribution to the translational temperature. The ratio γ of momentum transfer to inelastic collision rates is measured to be ⩽9.1×10[superscript 2]. We also perform quantum scattering calculations of Sb–[superscript 4]He collisions, based on ab initio interaction potentials, that demonstrate significant anisotropy of the ground state induced by the spin-orbit interaction. Agreement is obtained between theory and experiment with a ≈10% increase in the ab initio potential depth. This work suggests that buffer-gas-cooled pnictogen atoms lighter than Sb can be loaded into a magnetic trap. National Science Foundation (U.S.) (Grant PHY-1067990) Harvard-MIT Center for Ultracold Atoms 2013-08-27T15:01:26Z 2013-08-27T15:01:26Z 2013-07 2013-04 Article http://purl.org/eprint/type/JournalArticle 1050-2947 1094-1622 http://hdl.handle.net/1721.1/80299 Connolly, Colin B., Yat Shan Au, Eunmi Chae, Timur V. Tscherbul, Alexei A. Buchachenko, Wolfgang Ketterle, and John M. Doyle. “Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions.” Physical Review A 88, no. 1 (July 2013). © 2013 American Physical Society https://orcid.org/0000-0002-9528-3044 en_US http://dx.doi.org/10.1103/PhysRevA.88.012707 Physical Review A Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Connolly, Colin B. Au, Yat Shan Chae, Eunmi Tscherbul, Timur V. Buchachenko, Alexei A. Ketterle, Wolfgang Doyle, John M. Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions |
| title | Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions |
| title_full | Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions |
| title_fullStr | Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions |
| title_full_unstemmed | Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions |
| title_short | Zeeman relaxation induced by spin-orbit coupling in cold antimony-helium collisions |
| title_sort | zeeman relaxation induced by spin orbit coupling in cold antimony helium collisions |
| url | http://hdl.handle.net/1721.1/80299 https://orcid.org/0000-0002-9528-3044 |
| work_keys_str_mv | AT connollycolinb zeemanrelaxationinducedbyspinorbitcouplingincoldantimonyheliumcollisions AT auyatshan zeemanrelaxationinducedbyspinorbitcouplingincoldantimonyheliumcollisions AT chaeeunmi zeemanrelaxationinducedbyspinorbitcouplingincoldantimonyheliumcollisions AT tscherbultimurv zeemanrelaxationinducedbyspinorbitcouplingincoldantimonyheliumcollisions AT buchachenkoalexeia zeemanrelaxationinducedbyspinorbitcouplingincoldantimonyheliumcollisions AT ketterlewolfgang zeemanrelaxationinducedbyspinorbitcouplingincoldantimonyheliumcollisions AT doylejohnm zeemanrelaxationinducedbyspinorbitcouplingincoldantimonyheliumcollisions |