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Title: Shapes of rotating superfluid helium nanodroplets

Journal Article · · Physical Review B
 [1];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [6];  [11];  [12];  [13];  [14];  [6];  [15];  [16];  [17]
  1. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
  2. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Chemistry
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Chemistry
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS); Argonne National Lab. (ANL), Lemont, IL (United States)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS); Stanford Univ., Stanford, CA (United States). Dept. of Applied Physics
  6. Technical Univ. of Berlin, Berlin (Germany). Inst. of Optics and Atomic Physics
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Chemistry; Vescent Photonics, Inc., Golden, CO (United States)
  8. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Chemistry; IPG Photonics, Santa Clara, CA (United States)
  9. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division; Aarhus Univ., Aarhus (Denmark). Dept. of Chemistry
  10. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS); Technical Univ. of Berlin, Berlin (Germany). Inst. of Optics and Atomic Physics
  11. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
  12. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS); California Lutheran Univ., Thousand Oaks, CA (United States)
  13. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States). Dept. of Materials Science and Engineering; Univ. of Southern California, Los Angeles, CA (United States). Monk Family Dept. of Chemical Engineering and Materials Science
  14. Univ. of Saskatchewan, Saskatoon, SK (Canada). Dept. of Geological Sciences
  15. SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS) and Photon Ultrafast Laser Science and Engineering Inst. (PULSE); Argonne National Lab. (ANL), Lemont, IL (United States); Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
  16. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Chemical Sciences Division
  17. Univ. of Southern California, Los Angeles, CA (United States). Dept. of Physics and Astronomy and . Dept. of Chemistry

Rotating superfluid He droplets of approximately 1 μm in diameter were obtained in a free nozzle beam expansion of liquid He in vacuum and were studied by single-shot coherent diffractive imaging using an x-ray free electron laser. The formation of strongly deformed droplets is evidenced by large anisotropies and intensity anomalies (streaks) in the obtained diffraction images. The analysis of the images shows that in addition to previously described axially symmetric oblate shapes, some droplets exhibit prolate shapes. Forward modeling of the diffraction images indicates that the shapes of rotating superfluid droplets are very similar to their classical counterparts, giving direct access to the droplet angular momenta and angular velocities. The analyses of the radial intensity distribution and appearance statistics of the anisotropic images confirm the existence of oblate metastable superfluid droplets with large angular momenta beyond the classical bifurcation threshold.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Science Foundation (NSF)
Grant/Contract Number:
DMR-1501276; CHE-1362535; AC02-05CH11231; AC02-06CH11357; LA1214; AC02-76SF00515
OSTI ID:
1353180
Alternate ID(s):
OSTI ID: 1344133; OSTI ID: 1459382
Journal Information:
Physical Review B, Vol. 95, Issue 6; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 29 works
Citation information provided by
Web of Science

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Cited By (7)

Coherent diffractive imaging of single helium nanodroplets with a high harmonic generation source journal September 2017
Equilibrium shapes of two-phase rotating fluid drops with surface tension journal January 2020
Real-time observation of jumping and spinning nanodroplets journal January 2020
Density functional theory of doped superfluid liquid helium and nanodroplets journal July 2017
Infrared spectroscopy in superfluid helium droplets journal December 2018
Three-dimensional shapes of spinning helium nanodroplets text January 2018
Coherent diffractive imaging of single helium nanodroplets with a high harmonic generation source text January 2017