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The Circulation Mill, Thermal Vapour-Cell Variant: A Room-Temperature Source of Axial Spin-Current Circulation

Year: 2026

Type: preprint

Abstract: A variant of the Circulation Mill design (DOI 10.5281/zenodo.24100552) replacing the spin-polarised 87Rb Bose-Einstein condensate with a room-temperature thermal vapour cell: toroidal cell, nitrogen buffer gas, distributed D1 optical pumping. Computed budget (SIMULATED, NOT MEASURED): polarisation fraction 0.848, T1 27.8 ms, 3.19e6 circulation quanta per second, fractional error per quantum 0.189, stored buffer 300423 quanta. No conversion to a torsion angle is claimed.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.24102257

Author: Aldred, William Alexander

Language: English

Topic: Atomic and Subatomic Physics Research

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7225739401

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