Superfluid avalanches
Avalanches are seen in the invasion percolation region of an adsorption/desorption isotherm for superfluid super(4)He on a Nuclepore filter. A theory of these avalanches combines elements from the geometry of the pore space of Nuclepore and elements from the dynamics of superfluid films. The geometr...
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| Veröffentlicht in: | Journal of low temperature physics 1998-06, Vol.111 (5-6), p.841-861 |
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| container_title | Journal of low temperature physics |
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| creator | GUYER, R. A MCCALLT, K. R |
| description | Avalanches are seen in the invasion percolation region of an adsorption/desorption isotherm for superfluid super(4)He on a Nuclepore filter. A theory of these avalanches combines elements from the geometry of the pore space of Nuclepore and elements from the dynamics of superfluid films. The geometry of Nuclepore filters is studied and the percolation properties of these systems are assessed. The percolation threshold is found to be characterized by the average coordination number of the pores. A model of the coupled pore space/superfluid system is introduced. This model is studied numerically and is shown to lead to self-quenched avalanches that share many qualitative properties with the avalanches seen in experiment. |
| doi_str_mv | 10.1023/a:1022225224418 |
| format | Article |
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A</creatorcontrib><creatorcontrib>MCCALLT, K. R</creatorcontrib><title>Superfluid avalanches</title><title>Journal of low temperature physics</title><description>Avalanches are seen in the invasion percolation region of an adsorption/desorption isotherm for superfluid super(4)He on a Nuclepore filter. A theory of these avalanches combines elements from the geometry of the pore space of Nuclepore and elements from the dynamics of superfluid films. The geometry of Nuclepore filters is studied and the percolation properties of these systems are assessed. The percolation threshold is found to be characterized by the average coordination number of the pores. A model of the coupled pore space/superfluid system is introduced. This model is studied numerically and is shown to lead to self-quenched avalanches that share many qualitative properties with the avalanches seen in experiment.</description><subject>Acoustic wave propagation</subject><subject>Boson degeneracy and superfluidity of 4he</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Exact sciences and technology</subject><subject>Filters (for fluids)</subject><subject>Geometry</subject><subject>Isotherms</subject><subject>Mathematical models</subject><subject>Numerical analysis</subject><subject>Percolation (fluids)</subject><subject>Physics</subject><subject>Porous materials</subject><subject>Quantum fluids and solids; liquid and solid helium</subject><issn>0022-2291</issn><issn>1573-7357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNp9kD1LBDEQhoMouJ6WYmshWq0mk8nH2Mmhd8KBhVovySbBlT1v3dwK_vsLeLVv8xTvwzAzjF0Ifis4yDt3X1CiABCFPWCVUEbWRipzyCpeuhqAxDE7yfmTc05Wy4qdv05DHFM_deHS_bjefbUfMZ-yo-T6HM_2nLH3p8e3-bJevSye5w-regBU2xpNgBR48NomBSJGGaLhxoJQrUAfWyG8JfCaKBCABe2Nd8FTQqksWTljN39zh3HzPcW8bdZdbmNf1oibKTcGUYPliMW8_tcEbQiJVBGv9qLLrevTWC7qcjOM3dqNv035D9fKyh1pWFbF</recordid><startdate>19980601</startdate><enddate>19980601</enddate><creator>GUYER, R. 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R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Superfluid avalanches</atitle><jtitle>Journal of low temperature physics</jtitle><date>1998-06-01</date><risdate>1998</risdate><volume>111</volume><issue>5-6</issue><spage>841</spage><epage>861</epage><pages>841-861</pages><issn>0022-2291</issn><eissn>1573-7357</eissn><coden>JLTPAC</coden><abstract>Avalanches are seen in the invasion percolation region of an adsorption/desorption isotherm for superfluid super(4)He on a Nuclepore filter. A theory of these avalanches combines elements from the geometry of the pore space of Nuclepore and elements from the dynamics of superfluid films. The geometry of Nuclepore filters is studied and the percolation properties of these systems are assessed. The percolation threshold is found to be characterized by the average coordination number of the pores. A model of the coupled pore space/superfluid system is introduced. This model is studied numerically and is shown to lead to self-quenched avalanches that share many qualitative properties with the avalanches seen in experiment.</abstract><cop>Heidelberg</cop><pub>Springer</pub><doi>10.1023/a:1022225224418</doi><tpages>21</tpages></addata></record> |
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| ispartof | Journal of low temperature physics, 1998-06, Vol.111 (5-6), p.841-861 |
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| language | eng |
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| source | SpringerNature Journals |
| subjects | Acoustic wave propagation Boson degeneracy and superfluidity of 4he Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Filters (for fluids) Geometry Isotherms Mathematical models Numerical analysis Percolation (fluids) Physics Porous materials Quantum fluids and solids liquid and solid helium |
| title | Superfluid avalanches |
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