Liquid and Solid Helium at Very Low Temperatures

他们建议在极低的温度下研究以下现象 温度： 1)准粒子的透射几率 正常或超流液体~ 3 He与饱和 3 He在液体4 He中的溶液。 将获得概率 通过测量自旋波在界面上的传播。 2)振动弦在超流3 He-A中的阻尼 极低的温度 这个实验将揭示 超流能隙随着超流方向的变化而变化。 准粒子动量根据sin 0依赖性预测 从理论上讲 3)界面的Kapitza热导率 超流A相和B相。 4)在自由表面上的反射几率 液体4 He和光滑固体表面。 5)计算了~ 3 He原子在 液态3 He。

They propose to study the following phenomena at very low temperatures: 1) The transmission probability of quasiparticles striking the interface between normal or superfluid liquid 3He and a saturated solution of 3He in liquid 4He. The probability will be obtained by measuring the transmission of spin waves across the interface. 2) The damping of a vibrating wire in superfluid 3He-A at extremely low temperatures. This experiment will reveal whether the superfluid energy gap varies with the direction of the quasiparticle momentum according to the sin0 dependence predicted by theory. 3) The Kapitza thermal conductance of the interface between the superfluid A and B phases in 3He. 4) The reflection probability of rotons at the free surface of liquid 4He and at smooth solid surfaces. 5) The reflection probability of 3He atoms at the surface of liquid 3He.