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Simulation of Motion of H2 and D2 Molecules in Sextupole Magnets

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Abstract

We simulate the motion of hydrogen and deuterium molecules in the magnetic system of a setup intended for obtaining nuclear-spin-polarized molecules. Spatial separation of molecules with different magnetic moment projections by the spin filtration method in a nonuniform magnetic field is performed using superconducting sextupole magnets. Calculations are carried out for a magnetic field induction of 3.7 T at the poles and a nozzle temperature of 7 K. Simulation show that the ratio of polarized flux of hydrogen molecules to the detector to the total flux from the source nozzle is 2.3 × 10–6, nuclear polarization being close to 100%. Calculations performed for deuterium reveal that this ratio is 7 times smaller due to the smallness of the magnetic moment relative to hydrogen molecules. Trajectories of molecules in the magnetic system and their spatial distribution are represented graphically. Mathematical aspects of the algorithm of the computer program developed for this purpose are considered.

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ACKNOWLEDGMENTS

The authors are grateful to A.M. Rudnev and R.Sh. Sadykov for their maintenance of the setup for the production of polarized hydrogen and deuterium molecules.

The planned experiment on measuring the nuclear polarization of molecules will be performed with the participation of R. Engels, M. Buscher, and L. Huxold.

Funding

This study was supported by the Russian Science Foundation (project no. 16-42-01009) together with the German Research Society (DFG) (project no. BU 2227/1-1).

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Authors and Affiliations

  1. Novosibirsk State University, 630090, Novosibirsk, Russia

    A. V. Yurchenko, D. K. Toporkov & Yu. V. Shestakov

  2. Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    D. M. Nikolenko, I. A. Rachek, D. K. Toporkov & Yu. V. Shestakov

Authors
  1. A. V. Yurchenko
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  2. D. M. Nikolenko
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  3. I. A. Rachek
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  4. D. K. Toporkov
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  5. Yu. V. Shestakov
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Contributions

The Monte Carlo computer program was developed and composed by A.V. Yurchenko. All coauthors participated in discussion of the results of simulation and made a significant contribution to analysis and interpretation of results and to the critical review of the manuscript.

Corresponding author

Correspondence to A. V. Yurchenko.

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The authors claim that they have no conflicts of interest.

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Translated by N. Wadhwa

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Yurchenko, A.V., Nikolenko, D.M., Rachek, I.A. et al. Simulation of Motion of H2 and D2 Molecules in Sextupole Magnets. Tech. Phys. 64, 1248–1259 (2019). https://doi.org/10.1134/S1063784219090226

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  • DOI: https://doi.org/10.1134/S1063784219090226

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