Progress towards comparison of quantum and classical vacuum standards
We present our progress towards a comparison of NIST's cold atom primary vacuum standard and a dynamic expansion vacuum standard. The cold atom vacuum standard (CAVS) converts the loss rate of atoms from a magnetic trap to a vacuum pressure using ab initio calculations of the quantum atom-molec...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Measurement: Sensors |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2665917421001926 |
| _version_ | 1818852522863886336 |
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| author | D.S. Barker N.N. Klimov E. Tiesinga J.A. Fedchak J. Scherschligt S. Eckel |
| author_facet | D.S. Barker N.N. Klimov E. Tiesinga J.A. Fedchak J. Scherschligt S. Eckel |
| author_sort | D.S. Barker |
| collection | DOAJ |
| description | We present our progress towards a comparison of NIST's cold atom primary vacuum standard and a dynamic expansion vacuum standard. The cold atom vacuum standard (CAVS) converts the loss rate of atoms from a magnetic trap to a vacuum pressure using ab initio calculations of the quantum atom-molecule collision cross-section. To validate the CAVS, we have constructed a new flowmeter and dynamic expansion system that can produce low-uncertainty pressures in the ultra-high-vacuum range that is required for atom trapping. We discuss the operation and systematics of both the CAVS and flowmeter. |
| first_indexed | 2024-12-19T07:22:16Z |
| format | Article |
| id | doaj.art-0ade9f8d349a456db0d804b8fb1f99c8 |
| institution | Directory Open Access Journal |
| issn | 2665-9174 |
| language | English |
| last_indexed | 2024-12-19T07:22:16Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Measurement: Sensors |
| spelling | doaj.art-0ade9f8d349a456db0d804b8fb1f99c82022-12-21T20:30:54ZengElsevierMeasurement: Sensors2665-91742021-12-0118100229Progress towards comparison of quantum and classical vacuum standardsD.S. Barker0N.N. Klimov1E. Tiesinga2J.A. Fedchak3J. Scherschligt4S. Eckel5Corresponding author.; Sensor Science Division, National Institute of Standards and Technology, Gaithersburg, MD, USASensor Science Division, National Institute of Standards and Technology, Gaithersburg, MD, USAQuantum Measurement Division, National Institute of Standards and Technology, Gaithersburg, MD, USASensor Science Division, National Institute of Standards and Technology, Gaithersburg, MD, USASensor Science Division, National Institute of Standards and Technology, Gaithersburg, MD, USASensor Science Division, National Institute of Standards and Technology, Gaithersburg, MD, USAWe present our progress towards a comparison of NIST's cold atom primary vacuum standard and a dynamic expansion vacuum standard. The cold atom vacuum standard (CAVS) converts the loss rate of atoms from a magnetic trap to a vacuum pressure using ab initio calculations of the quantum atom-molecule collision cross-section. To validate the CAVS, we have constructed a new flowmeter and dynamic expansion system that can produce low-uncertainty pressures in the ultra-high-vacuum range that is required for atom trapping. We discuss the operation and systematics of both the CAVS and flowmeter.http://www.sciencedirect.com/science/article/pii/S2665917421001926Vacuum metrologyLaser coolingAtom-molecule scattering |
| spellingShingle | D.S. Barker N.N. Klimov E. Tiesinga J.A. Fedchak J. Scherschligt S. Eckel Progress towards comparison of quantum and classical vacuum standards Measurement: Sensors Vacuum metrology Laser cooling Atom-molecule scattering |
| title | Progress towards comparison of quantum and classical vacuum standards |
| title_full | Progress towards comparison of quantum and classical vacuum standards |
| title_fullStr | Progress towards comparison of quantum and classical vacuum standards |
| title_full_unstemmed | Progress towards comparison of quantum and classical vacuum standards |
| title_short | Progress towards comparison of quantum and classical vacuum standards |
| title_sort | progress towards comparison of quantum and classical vacuum standards |
| topic | Vacuum metrology Laser cooling Atom-molecule scattering |
| url | http://www.sciencedirect.com/science/article/pii/S2665917421001926 |
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