Magnetic Confinement of a Bubble of Supercooled $^3$He-A
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917972557168640 |
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| author | Whitehead, Luke Casey, Andrew Haley, Richard P. Heikkinen, Petri J. Levitin, Lev V. Mayer, Adam J. Rojas, Xavier Salmon, Tineke Saunders, John Thomson, Alex Zmeev, Dmitry E. Autti, Samuli |
| author_facet | Whitehead, Luke Casey, Andrew Haley, Richard P. Heikkinen, Petri J. Levitin, Lev V. Mayer, Adam J. Rojas, Xavier Salmon, Tineke Saunders, John Thomson, Alex Zmeev, Dmitry E. Autti, Samuli |
| contents | We have designed and constructed a magnet surrounding a cylindrical volume of superfluid helium-3 to isolate a region of metastable, supercooled A-phase, entirely surrounded by bulk A-phase - isolating the 'bubble' from rough surfaces that can trigger the transition to the stable B-phase. We outline the design of the experimental cell and magnet, and show that the performance of the magnet is consistent with simulations, including the capability to producing the high field gradient required for generating a bubble. Future plans include the investigation of possible intrinsic mechanisms underpinning the A-B transition, with potential implications for early-universe cosmological phase transitions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_24288 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetic Confinement of a Bubble of Supercooled $^3$He-A Whitehead, Luke Casey, Andrew Haley, Richard P. Heikkinen, Petri J. Levitin, Lev V. Mayer, Adam J. Rojas, Xavier Salmon, Tineke Saunders, John Thomson, Alex Zmeev, Dmitry E. Autti, Samuli Other Condensed Matter We have designed and constructed a magnet surrounding a cylindrical volume of superfluid helium-3 to isolate a region of metastable, supercooled A-phase, entirely surrounded by bulk A-phase - isolating the 'bubble' from rough surfaces that can trigger the transition to the stable B-phase. We outline the design of the experimental cell and magnet, and show that the performance of the magnet is consistent with simulations, including the capability to producing the high field gradient required for generating a bubble. Future plans include the investigation of possible intrinsic mechanisms underpinning the A-B transition, with potential implications for early-universe cosmological phase transitions. |
| title | Magnetic Confinement of a Bubble of Supercooled $^3$He-A |
| topic | Other Condensed Matter |
| url | https://arxiv.org/abs/2503.24288 |