Neutron Scattering Study of Elementary Excitations in Liquid Helium-3
Neutron Scattering Study of Elementary Excitations in Liquid Helium-3
复制标题
液氦 3 中基本激发的中子散射研究
DOI：
10.1103/physrevlett.37.842
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
G. Ostrowski
中科院分区：
文献类型：
--
作者：
K. Sköld;C. Pelizzari;R. Kleb;G. Ostrowski
The neutron inelastic scattering function of liquid helium-3 at 0.015 K has been measured for wave vectors in the range $0.8{\AA{}}^{\ensuremath{-}1}l~ql~2.2{\AA{}}^{\ensuremath{-}1}$. For $ql1.4$ ${\mathrm{\AA{}}}^{\ensuremath{-}1}$, the scattering function contains two peaks. The peak at lower energy is due to spin-fluctuation scattering in the particle-hole region while the peak at higher energy is identified to be the zero sound mode. By comparing the measured structure factor with the x-ray structure factor, the spin-dependent scattering cross section and the corresponding structure factor are determined.
The neutron inelastic scattering function of liquid helium-3 at 0.015 K has been measured for wave vectors in the range $0.8{\AA{}}^{\ensuremath{-}1}l~ql~2.2{\AA{}}^{\ensuremath{-}1}$. For $ql1.4$ ${\mathrm{\AA{}}}^{\ensuremath{-}1}$, the scattering function contains two peaks. The peak at lower energy is due to spin-fluctuation scattering in the particle-hole region while the peak at higher energy is identified to be the zero sound mode. By comparing the measured structure factor with the x-ray structure factor, the spin-dependent scattering cross section and the corresponding structure factor are determined.