Drag Force on a High Porosity Aerogel in Liquid 3He
Drag Force on a High Porosity Aerogel in Liquid 3He
复制标题
液体 3He 中高孔隙率气凝胶的阻力
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
K. Nagai
中科院分区:
文献类型:
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作者:
H. Takeuchi;S. Higashitani;K. Nagai
We discuss the drag force exerted on a high porosity aerogel in liquid 3He and its effect on sound propagation. The drag force is governed by distinct laws depending on the Knudsen number Kn, the ratio of the quasiparticle mean free path to a characteristic linear size of a body immersed in liquid. In the liquid 3He-aerogel system, the characteristic length scale is aerogel strand diameter and both of the Knudsen limit (Kn ≫ 1) and the hydrodynamic limit (Kn ≪ 1) can be achieved in the normal phase by varying temperature. We show that the crossover between the two limits can be found as a drastic change in the temperature dependence of sound attenuation in the normal phase of liquid 3He in aerogel.
DOI:
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发表时间:
2001
期刊:
J. Phys. Soc. Jpn 70(12)
影响因子:
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作者:
H.Takayanagi;K.Nitta S.Ishikawa;J.Nakamura;R.Yagi;L.Zhu;S.Yamanaka;H.Fukuoka;H.Fukuoka;K.Tanigaki;D.H.Chi;Y.Ren;G.M.Kalvius;M.Nakajima;D.Huo;K.Miyamoto;M.Koyama;H.Sato;K.Yamamoto;T.Fukunaga;T.Fujiwara;折茂慎一;J.Nakamura;T.Oguchi;T.Takasaki;H.Takagiwa;H.Takagiwa;S.Kobayashi;H.Tou;K.Shimada;H.Sato;G.Goll;T.Sasakawa;T.Goto;Y.Echizen;Y.Muro;J.Kitagawa;A.S.Miguel;K.Kunii;E.Reny;L.Zhu;X.Chen;N.Okuda;O.Syshchenko;H.Takagiwa;H.Tou;Y.Nakamori;T.Fujiwara;J.Tamura;J.Nakamura;T.Iwasaki;A.S.Miguel;X.Chen;J.Tamura-Okada;T.Goto;M.Matsunami;H.Okamura;F.Iga;H.Okamura;G.M.Kalvius;S.O.Hong;K.Shimada;J.Kitagawa;K.Prokes;H.Sato;S.Qiao;S.Qiao;H.Sato;H.Sato;H.Sato;Y.Ueda;S.Orimo;K.Koyama;T.Fujiwara;S.Orimo;T.Fujiwara;T.Fukunaga;O.Syshchenko;O.Syshchenko;K.Yagasaki;T.Oguchi;H.Momida;K.Oka;Yu-Jun Zhao;小口多美夫;小口多美夫;小口多美夫;T.Ekino;T.Ekino;T.Ekino;T.Ekino;M.H.Jung;T.Ichikawa
通讯作者:
T.Ichikawa