書誌事項
- タイトル別名
-
- Dynamics in Fluids. Dynamic Structural Analysis of Supercritical Water.
- チョウリンカイスイ ノ ドウテキ コウゾウ カイセキ
この論文をさがす
抄録
The rotational dynamics of water in super- and subcritical conditions is investigated by measuring the spin-lattice relaxation time T1 of heavy water (D2O). The experimentally determined T1 is shown to be governed by the quadrupolar mechanism even in the supercritical conditions and to provide the second-order reorientational correlation time τ2R of the O-D axis. It is then found that while τ2R decreases rapidly with the temperature on the saturation curve, it remains on the order of several tens of femtoseconds when the density is varied at a temperature above the critical. The comparison of τ2R with the angular momentum correlation time shows that the inertial effect is operative in the rotational dynamics of supercritical water. The dependence of τ2R on the hydrogen bonding state is also examined in combination with computer simulations, and the effect of the hydrogen bonding on the rotational dynamics in supercritical water is found to be weaker than but to be on the same order of magnitude as that in ambient water on the relative scale. Actually, although τ2R is divergent in the limit of zero density, it is observed to increase with the density when the density is above ∼1/3 of the critical.
収録刊行物
-
- 高圧力の科学と技術
-
高圧力の科学と技術 10 (4), 283-289, 2000
日本高圧力学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390001204381859968
-
- NII論文ID
- 10007140014
-
- NII書誌ID
- AN10452913
-
- COI
- 1:CAS:528:DC%2BD3MXhtVWhtQ%3D%3D
-
- ISSN
- 13481940
- 0917639X
- http://id.crossref.org/issn/0917639X
-
- NDL書誌ID
- 5587306
-
- 本文言語コード
- ja
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可