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Measurements of giant cross sections in low temperature4He-4He scattering

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Abstract

We have studied binary collisions of ground state4He atoms at temperatures from 340 mK to 430 mK using an atomic beam apparatus built in a dilution refrigerator. Very large s-wave scattering cross sections between 120Å2–250 Å2 have been observed. These are due to the proximity of a dimer state near the continuum of the interaction potential. Results show that the latest potential of Aziz et al. needs modification.

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Authors and Affiliations

  1. Department of Physics Lyman Laboratory, Harvard University, 02138, Cambridge, MA

    John C. Mester, Eric S. Meyer, Tito E. Huber, Meritt W. Reynolds & Isaac F. Silvera

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  1. John C. Mester
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  2. Eric S. Meyer
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  3. Tito E. Huber
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  4. Meritt W. Reynolds
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  5. Isaac F. Silvera
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Mester, J.C., Meyer, E.S., Huber, T.E. et al. Measurements of giant cross sections in low temperature4He-4He scattering. J Low Temp Phys 89, 569–572 (1992). https://doi.org/10.1007/BF00694089

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  • DOI: https://doi.org/10.1007/BF00694089

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