Collisions in a dual-species magneto-optical trap of molecules and atoms
We study inelastic collisions between CaF molecules and ^87 Rb atoms in a dual-species magneto-optical trap. The presence of atoms increases the loss rate of molecules from the trap. By measuring the loss rates and density distributions, we determine a collisional loss rate coefficient k _2 = (1.43...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac0c9a |
| _version_ | 1827872758327934976 |
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| author | S Jurgilas A Chakraborty C J H Rich B E Sauer Matthew D Frye Jeremy M Hutson M R Tarbutt |
| author_facet | S Jurgilas A Chakraborty C J H Rich B E Sauer Matthew D Frye Jeremy M Hutson M R Tarbutt |
| author_sort | S Jurgilas |
| collection | DOAJ |
| description | We study inelastic collisions between CaF molecules and ^87 Rb atoms in a dual-species magneto-optical trap. The presence of atoms increases the loss rate of molecules from the trap. By measuring the loss rates and density distributions, we determine a collisional loss rate coefficient k _2 = (1.43 ± 0.29) × 10 ^−10 cm ^3 s ^−1 at a temperature of 2.4 mK. We show that this is not substantially changed by light-induced collisions or by varying the populations of excited-state atoms and molecules. The observed loss rate is close to the universal rate expected in the presence of fast loss at short range, and can be explained by rotation-changing collisions in the ground electronic state. |
| first_indexed | 2024-03-12T16:28:24Z |
| format | Article |
| id | doaj.art-64928c4f0ce0429c99b3c7fe16debb24 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:28:24Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-64928c4f0ce0429c99b3c7fe16debb242023-08-08T15:35:34ZengIOP PublishingNew Journal of Physics1367-26302021-01-0123707500410.1088/1367-2630/ac0c9aCollisions in a dual-species magneto-optical trap of molecules and atomsS Jurgilas0A Chakraborty1https://orcid.org/0000-0001-9632-5296C J H Rich2B E Sauer3https://orcid.org/0000-0002-3286-4853Matthew D Frye4https://orcid.org/0000-0003-4807-2807Jeremy M Hutson5https://orcid.org/0000-0002-4344-6622M R Tarbutt6https://orcid.org/0000-0003-2713-9531Centre for Cold Matter, Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United KingdomCentre for Cold Matter, Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United KingdomCentre for Cold Matter, Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United KingdomCentre for Cold Matter, Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United KingdomJoint Quantum Centre (JQC) Durham-Newcastle, Department of Chemistry, Durham University , South Road, Durham DH1 3LE, United KingdomJoint Quantum Centre (JQC) Durham-Newcastle, Department of Chemistry, Durham University , South Road, Durham DH1 3LE, United KingdomCentre for Cold Matter, Blackett Laboratory, Imperial College London , Prince Consort Road, London SW7 2AZ, United KingdomWe study inelastic collisions between CaF molecules and ^87 Rb atoms in a dual-species magneto-optical trap. The presence of atoms increases the loss rate of molecules from the trap. By measuring the loss rates and density distributions, we determine a collisional loss rate coefficient k _2 = (1.43 ± 0.29) × 10 ^−10 cm ^3 s ^−1 at a temperature of 2.4 mK. We show that this is not substantially changed by light-induced collisions or by varying the populations of excited-state atoms and molecules. The observed loss rate is close to the universal rate expected in the presence of fast loss at short range, and can be explained by rotation-changing collisions in the ground electronic state.https://doi.org/10.1088/1367-2630/ac0c9alaser-cooled moleculescold collisionscold chemistry |
| spellingShingle | S Jurgilas A Chakraborty C J H Rich B E Sauer Matthew D Frye Jeremy M Hutson M R Tarbutt Collisions in a dual-species magneto-optical trap of molecules and atoms New Journal of Physics laser-cooled molecules cold collisions cold chemistry |
| title | Collisions in a dual-species magneto-optical trap of molecules and atoms |
| title_full | Collisions in a dual-species magneto-optical trap of molecules and atoms |
| title_fullStr | Collisions in a dual-species magneto-optical trap of molecules and atoms |
| title_full_unstemmed | Collisions in a dual-species magneto-optical trap of molecules and atoms |
| title_short | Collisions in a dual-species magneto-optical trap of molecules and atoms |
| title_sort | collisions in a dual species magneto optical trap of molecules and atoms |
| topic | laser-cooled molecules cold collisions cold chemistry |
| url | https://doi.org/10.1088/1367-2630/ac0c9a |
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