Shapes of Rotating <sup>3</sup>He Droplets

ORAL

Abstract

Recent advent of X-ray free electron lasers (XFEL) has enabled the study of rotation in free isolated superfluid 4He droplets.[1] The work presented here extends our study of rotating quantum fluids to non-superfluid 3He droplets. Sub micrometer sized 3He droplets were obtained from free jet expansion of liquid 3He at temperatures less than 3 K and studied via X-ray scattering at the LCLS XFEL.[2] The obtained shapes and sizes of rotating 4He and 3He droplets have been compared. In contrast to superfluid 4He droplets, 3He droplets (T = 0.15 K) are devoid of quantum vortices. Tracing of quantum vortices inside 4He droplets have been previously achieved by doping with large number of Xe atoms.[3] This work presents the first experimental study of the formation dynamics of atomic clusters in a homogenous, vortex-free quantum fluid.

[1] Bernando, C. et. al. 2017, Phys. Rev. B 95, 064510
[2] Gomez, L. F. et. al. 2014, Science 354, 906
[3] Jones, C. F. et. al. 2016, Phys. Rev. B 93, 180510

*NSF - DMR 1701077

–

Presenters

  • Deepak Verma

    • University of Southern California
    • Chemistry, University of Southern California

Authors

  • Deepak Verma

    • University of Southern California
    • Chemistry, University of Southern California

  • Sean O'Connell

    • University of Southern California
    • Chemistry, University of Southern California

  • Swetha Erukala

    • University of Southern California

  • Alexandra Feinberg

    • University of Southern California

  • Catherine A Saladrigas

    • University of California, Berkeley
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory

  • Benjamin W Toulson

    • LBNL
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory

  • Mario Borgwardt

    • LBNL
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory

  • Niranjan Shivaram

    • LBNL

  • Ming-Fu Lin

    • SLAC
    • SLAC National Accelerator Laboratory

  • Andre Al Haddad

    • Paul Scherrer Institut

  • Christoph Bostedt

    • Paul Scherrer Institut
    • Argonne National Labratory

  • Peter Walter

    • SLAC
    • LCLS, SLAC National Accelerator Laboratory

  • Oliver Gessner

    • LBNL
    • Chemical Sciences Division, Lawrence Berkeley National Laboratory

  • Andrey F. Vilesov

    • University of Southern California
    • Chemistry, University of Southern California