摘要
在 2 90K和 0 0 1～ 6 0 0MPa条件下 ,就压力对液态水对称伸缩振动的影响进行了原位Raman散射光谱研究。表明 :( 1)在 0 1～ 2 0 0MPa范围内 ,(ν1) max随着压力升高而减小 ;( 2 )在 2 0 0～ 4 0 0MPa范围内 ,压力升高导致 (ν1) max增大 ,并在 4 0 0MPa时达到最大值 ;( 3) (ν1) max随着压力的进一步升高 ( >4 0 0MPa)而降低。这表明在 2 0 0和 4 0 0MPa时 ,液态水结构的变化是不连续的 ,这也与在该压力范围内rOO 的变化特征是一致的。可认为与冰Ⅰh→冰Ⅲ→冰Ⅴ的相变相类似 。
Raman scattering studies of the stretching band from liquid water have been conducted up to 600 MPa at 290 K. It is shown that (nu(1))(max) decreases with increasing pressure initially and reaches the minimum at about 200 MPa, and increases at higher pressure up to about 400 MPa, then decreases with increasing pressure up to 600 MPa. And this is also in accordance with the behavior of r(infinity) under pressure. The authors conclude that, just like ice phase transition ice (I h)-->ice(III)-->ice(V) there also probably exists water phase transition water (I h)-->water(III)-->water(V).
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2004年第8期963-965,共3页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金 (批准号:40 1 0 30 0 5和 1 0 0 32 0 4 0 )资助项目
