Thermal expansion of α-nitrogen ice in terahertz spectroscopy

被引：1
|
作者：
Sangala, Bagvanth Reddy [1 ]
Guda, Kurumurthy [2 ]
机构：
[1] Palamuru Univ PG Ctr, Dept Phys, Wanaparthy 509103, Telangana, India
[2] Palamuru Univ, Dept Phys, Mahabubnagar 509001, Telangana, India
来源：
INDIAN JOURNAL OF PHYSICS | 2018年 / 92卷 / 11期
关键词：
Terahertz; alpha-Nitrogen ice; Thermal expansion; Time-domain spectroscopy; LATTICE-VIBRATIONS;
D O I：
10.1007/s12648-018-1238-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The volumetric thermal expansion coefficient of alpha-nitrogen (N-2) ice is calculated for temperatures between 10 and 25K using its terahertz transmission data and a phonon model. The observed dip in terahertz transmission around 1.45 THz is modeled as phonon absorption based on an intermolecular potential which is sum of the Lennard-Jones potential and quadrupole-quadrupole interaction term. Using this model and our experimental data, the lattice parameters of alpha-N-2 ice were obtained.
引用
收藏
页码：1385 / 1388
页数：4
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