Deceleration and trapping of SrF molecules using electric fields
ORAL
Abstract
Permanent electric dipole moments (EDMs) are signatures of time-reversal and parity violation, which acts as a sensitive probe of physics beyond the Standard Model (BSM). Within the NL-eEDM collaboration, we plan to measure the electron’s EDM using a cold, intense beam of barium fluoride (BaF) molecules.
Key to the increased statistical sensitivity of our experiment is an increase of the coherent measurement time. This will be achieved by reducing the velocity of a cryogenic beam of BaF molecules to 30m/s using a 4.5 m long traveling-wave Stark decelerator. We are currently working on the deceleration of a cryogenic beam of SrF molecules. SrF molecule is lighter than BaF and can be brought to a standstill for the same length of the decelerator. We have decelerated a beam of SrF molecules to zero velocity and trapped the molecules in the electric traps inside the decelerator for 50 ms.
Key to the increased statistical sensitivity of our experiment is an increase of the coherent measurement time. This will be achieved by reducing the velocity of a cryogenic beam of BaF molecules to 30m/s using a 4.5 m long traveling-wave Stark decelerator. We are currently working on the deceleration of a cryogenic beam of SrF molecules. SrF molecule is lighter than BaF and can be brought to a standstill for the same length of the decelerator. We have decelerated a beam of SrF molecules to zero velocity and trapped the molecules in the electric traps inside the decelerator for 50 ms.
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Publication: P. Aggarwal, Y. Yin, K. Esajas, H. L. Bethlem, A. Boeschoten, A. Borschevsky, S. Hoekstra, K. Jungmann, V. R. Marshall, T. B. Meijknecht, M. C. Mooij, R. G. E. Timmermans, A. Touwen, W. Ubachs, L. Willmann, Deceleration and trapping of SrF molecules (in preparation)
Presenters
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Parul Aggarwal
Authors
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Parul Aggarwal