Based on the mechanocaloric effect of superfluid helium a new way to produce super low-temperature was conceived and analyzed theoretically .

u4ece u8d85 u6d41 u6c26u7684u673au68b0u70edu6548u5e94u51fau53d1uff0cu6784u601du4e86u4e00u79cdu5236u53d6u6781u4f4eu6e29u7684u8bd5u9a8cu65b9u6cd5uff0cu5e76u4eceu7406u8bbau4e0au8fdbu884cu4e86u5206u6790u3002

We know that the system is a superfluid but the thermal properties are those not normal to superfluid .

u6211u4eecu77e5u9053u8fd9u79cdu7cfbu7edfu662f u8d85 u6d41u4f53uff0cu4f46u662fu5b83u7684u70edu6027u8d28u5bf9u4e8eu6b63u5e38u7684u8d85u6d41u4f53u6765u8bf4u7eddu5bf9u662fu4e0du6b63u5e38u7684u3002

Supercritical ( He - I ) or superfluid helium ( He - u2171 ) can be an optional coolant .

u51b7u5374u65b9u6cd5u53efu9009u62e9u8d85u4e34u754cu6c26uff08Heuff0dIuff09u6216 u8d85 u6d41 u6c26uff08Heu4e00u2161uff09 u8feb u6d41u3002

The bizarre behavior of superfluid helium has attracted many able theorists .

u8d85 u6d41u4f53 u6c26u8fd9u4e9bu5f02u4e4eu5bfbu5e38u7684u884cu4e3au5438u5f15u4e86u8bb8u591au6709u624du5e72u7684u7406u8bbau7269u7406u5b66u5bb6u3002

Before the LHC can start 50 tonnes of equipment have to be cooled to just 1.8 ? Kelvin above absolute zero with superfluid liquid helium u2013 by far the largest cryogenic project in history .

u5728LHCu53efu4ee5u542fu52a8u524duff0cu5fc5u987bu5c06u51765u4e07u5428u8bbeu5907u7528 u8d85 u6d41u4f53u6db2u6c26u51b7u5374u81f3u7eddu5bf9u96f6u5ea6u4e4bu4e0au4ec5 1.8K u7684 u6e29u5ea6uff0cu8fd9u662fu8fc4u4ecau4e3au6b62u5386u53f2u4e0au6700u5927u7684u4f4eu6e29u5de5u7a0bu3002

Secondly we study the stability of the topological superfluid phase in a trapped two-dimensional Fermi gas with spin-orbit coupling in a harmonic trapping potential .

u7136u540euff0cu6211u4eecu7cfbu7edfu5730u7814u7a76u4e86u8c10u632fu52bfu9631u4e2du7684u81eau65cbu8f68u9053u8026u5408u7684u6781u5316u8d39u7c73u6c14u4f53u4e2du7684u62d3u6251 u8d85 u6d41u76f8u7684u7a33u5b9au6027u3002

The relative friction force is proportional to cube of relative velocity between ~ 3He and superfluid ~ 4He .

u8fd9u79cdu76f8u4e92u6469u64e6u529bu4e0e~8Heu548c ~4Heu4e4bu95f4u7684u76f8u5bf9u901fu5ea6u7684u7acbu65b9u6210u6b63u6bd4u3002

The thermoacoustic oscillation during film boiling heat transfer in superfluid helium is studied .

u4ee5 u8d85 u6d41u6c26u4e3au5bf9u8c61uff0cu5bf9u5176u6cb8u817eu4f20u70edu8fc7u7a0bu4e2du7684u70edu58f0u632fu8361u73b0u8c61u8fdbu884cu4e86u7814u7a76u3002

Another notable oddity is that the thermal properties of this type of superfluid are different from normal superfluid properties .

u53e6u4e00u4e2au5f15u4ebau6ce8u76eeu7684u602au5f02u4e4bu5904u662fu8fd9u79cd u8d85 u6d41u4f53u7684u70edu6027u8d28u4e0eu6b63u5e38u8d85u6d41u4f53u7684u622au7136u4e0du540cu3002

Spin Responses of a Superfluid Fermi Gas of Atoms

u8d85 u6d41 u8d39u7c73u539fu5b50u6c14u4f53u7684 u52a8u529bu5b66u81eau65cbu7ed3u6784 u56e0u5b50u7684u7814u7a76

We also propose a detection scheme for the topological superfluid phase .

u5e76u4e14uff0cu6211u4eecu8fd8u63d0u51fau4e86u4e00u79cdu63a2u6d4bu62d3u6251 u8d85 u6d41u76f8u7684u65b9u6848u3002

The boiling phenomenon in the superfluid helium has some special characteristics .

u8d85 u6d41 u6c26u7684u6cb8u817eu73b0u8c61u5177u6709u4e00u822c u6d41u4f53u7684u6cb8u817eu73b0u8c61u6240 u6ca1u6709u7684u7279u5f02u6027u8d28u3002

This paper presents the recent research status of quantum gyroscope and superfluid gyroscope based on the new physical effects of cryogenic Bose-Einstein condensation .

u7efcu8ff0u4e86u57fau4e8eu4f4eu6e29u73bbu8272&u7231u56e0u65afu5766u51ddu805au72b6u6001u65b0u7269u7406u6548u5e94u7684u91cfu5b50u9640u87bau548c u8d85 u6d41u4f53u9640u87bau7684u7814u7a76u52a8u6001u3002

Study on the data acquisition system of superfluid helium obtaining experiment

u8d85 u6d41 u6c26u83b7u53d6u5b9eu9a8c u6db2u4f4du6570u636eu91c7u96c6u4e0eu6d4bu8bd5u7cfbu7edfu7814u7a76

Finally an appropriate throttle valve was chose to serve the superfluid helium system .

u6700u7ec8u786eu5b9au4e86u4e00u4e2au9002u5408u8be5 u8d85 u6d41u6c26u7cfbu7edfu7684 u8f83u4e3a u7406u60f3u7684u8282u6d41u9600u3002

Several different valve needles were designed and manufactured for a superfluid helium system .

u9488u5bf9u67d0 u8d85 u6d41u6c26u7cfbu7edfu6240 u9700u8981 u7684 u4f4eu6e29 u8282u6d41u9600uff0cu8bbeu8ba1u5e76u52a0u5de5u4e86u51e0u79cdu4e0du540c u7ed3u6784 u5f62u5f0f u548c u5c3au5bf8u7684u9600u9488u3002

Studies of superfluid Fermi gases in optical lattices have been become an interesting subject in physics .

u5728u5149u6676u683c u4e2du8d85 u6d41 u8d39u7c73u6c14u4f53u7684u7814u7a76u662fu500du53d7u4ebau4eecu5173u6ce8u7684u7269u7406u524du6cbfu8bfeu9898u3002

Therefore the research on superfluid gyroscope has great practical significance .

u56e0u6b64uff0cu5bf9 u8d85 u6d41u4f53u9640u87bau5728u5e94u7528u9886u57dfu7684u7814u7a76u6709u91cdu5927u7684u73b0u5b9eu610fu4e49u3002

One expects to see interaction between bosons in a bosonic superfluid system and interactions between fermions in a fermionic superfluid system .

u4ebau4eecu8ba4u4e3au8fd9u79cd u8d85 u6d41u4f53u5e94u8be5u5c55u73b0u51fau73bbu8272u5b50u5728u73bb u8272u5b50u7cfbu7edfu4e2du7684u76f8u4e92u53cdu5e94u548cu8d39u5bc6u5b50u5728u8d39u5bc6u5b50u7cfbu7edfu4e2du7684u76f8u4e92u53cdu5e94u3002

The superfluid is capable of flowing through narrow capillaries and channels that are impervious to most gases and certainly to all liquids .

u8d85 u6d41u4f53u80fdu591fu6d41u8fc7u5927u591au6570u6c14u4f53u4ee5u53cau6240u6709u6db2u4f53u90fdu900fu4e0du8fc7u7684u72edu7a84u7684u6bdbu7ec6u7ba1u548cu5b54u9053u3002

The quantization of vortices has also been discussed in the relativistic superfluid in this paper .

u53e6u5916u8fd8u8ba8u8bbau4e86u76f8u5bf9u8bbau6027 u8d85 u6d41u4f53u4e2du7684u6da1u65cbu91cfu5b50u5316u3002

One of the astonishing properties of this superfluid is that it flows uphill .

u8fd9u79cd u8d85 u6d41u4f53u7684u4e00u4e2au4ee4u4ebau60cau8bb6u7684u6027u8d28u662fu5b83u5411u4e0au6d41u52a8u3002

The discovery of this new superfluid type will possibly lead to a better understanding of matter especially as it relates to understanding high temperature superconductors .

u8fd9u65b0 u8d85 u6d41u4f53u7684u53d1u73b0u53efu80fdu4f1au5e2eu52a9 u79d1u5b66u5bb6 u4eecu8fdbu4e00u6b65u4e86u89e3u7269u8d28uff0cu5c24u5176u662fu5bf9u9ad8u6e29u8d85u5bfcu7269u8d28u7684u4e86u89e3u3002

On the Topological Structure of a Superfluid Helium System

u8d85 u6d41Heu7cfbu7edfu7684u62d3u6251u7ed3u6784u7814u7a76

Trapped neutrons are detected when they beta decay ; energetic decay electrons ionize helium atoms in the superfluid resulting in efficient conversion of electron kinetic energy into light ( scintillation ) .

u88abu6355u6349u7684u4e2du5b50u5728u8d1du5b83u8870u53d8u65f6u53efu88abu4fa6u6d4bu5230uff0cu56e0u4e3au5728 u8d85 u6d41u4f53u4e2du5e26u6709u80fdu91cfu7684u8870u53d8u7535u5b50u53efu6e38u79bb u6c26u539fu5b50u5bfcu81f4u7535u5b50u52a8u80fdu6709u6548u5730u8f6cu6362u6210u5149u5b50uff08u95eau70c1uff09u3002

The trap is loaded through inelastic scattering of cold neutrons ( 11 K ) with phonons in superfluid helium-4 .

u5176u6355u6349u662fu900fu8fc7u5728 u8d85 u6d41u4f53u6db2u6001u6c26-4u4e2du7684u5149u5b50u4e0eu4f4eu6e29u4e2du5b50uff08 11Kuff09u4e4bu95f4u7684u975eu5f39u6027u6563u5c04u4f5cu7528u6765u8fbeu6210u3002

Investigations on Collective Excitations and Their Interactions of Superfluid Atomic Fermi Gases

u8d85 u6d41u8d39u7c73u539fu5b50u6c14u4f53u4e2du7684u96c6u4f53u6fc0u53d1u53cau5176u76f8u4e92u4f5cu7528u7814u7a76

For instance what happens when you take a fermionic superfluid and convert it into a bosonic superfluid ?

u4f8bu5982uff0cu5f53u53d6u51fau4e00u79cd u8d39u5bc6u5b50 u8d85 u6d41u4f53uff0cu5e76u628au5b83u8f6cu6362u5230u73bbu8272u5b50u8d85u6d41u4f53u65f6u4f1au51fau73b0u4ec0u4e48u73b0u8c61uff1f

Experimental study of thermal wave in superfluid helium u2171

u8d85 u6d41 u6c26u4e2du7684u70edu6ce2u5b9eu9a8cu7814u7a76

We have studied the characterization and detection of the Mott insulator to superfluid phase transition in the coupled cavity array systems .

u6211u4eecu7814u7a76u4e86u8026u5408u8154u9635u5217u7cfbu7edfu4e2du6240u53d1u751fu7684u83abu7279u7eddu7f18u5230 u8d85 u6d41u76f8u53d8u7684u523bu753bu548cu63a2u6d4bu3002