...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Experimental and Theoretical Physics >Infrared Absorption in Dense Sodium Vapor
【24h】

Infrared Absorption in Dense Sodium Vapor

机译：浓钠蒸气中的红外吸收

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The absorption spectra of a dense resonance medium were experimentally studied for the example of thermally heated dense sodium vapor. Several mechanisms that might cause substantial absorption and enhanced intensity of emission in the IR spectral region, λ > 0.9 μm, were considered. For the first time, a detailed study of the structure of the absorption spectra of sodium vapor in the specified wavelength range was performed to determine the influence of the kind and pressure of the buffer gas. It was found that buffer gas component (dimers and trimers) in sodium vapor could not explain the experimental dependences of absorption in the infrared region. Possible influence of microparticles formed in condensation of convective sodium vapor flows in heated cells on the optical properties of vapor was considered. Microparticles could contribute to the observed absorption, but were incapable of explaining the substantial intensity of vapor radiation reported earlier. Possible many-particle effects on the absorption in the far spectral line wing were discussed. For the first time, the method of molecular dynamics was used to show for the example of the distribution function of ionic microfields in a dense plasma that such effects were in principle capable of substantially raising the profile of the line and increasing absorption in the region of large detunings from the resonance compared with the simple quasi-static model in the nearest-neighbor approximation.
机译：以热加热致密钠蒸气为例，对致密共振介质的吸收光谱进行了实验研究。考虑了可能导致λ> 0.9μm的红外光谱区域中的大量吸收并增强发射强度的几种机制。首次对指定波长范围内的钠蒸气吸收光谱的结构进行了详细研究，以确定缓冲气体的种类和压力的影响。发现钠蒸气中的缓冲气体成分（二聚体和三聚体）无法解释红外区域吸收的实验依赖性。考虑了在加热的小室中对流钠蒸气的冷凝中形成的微粒对蒸气的光学性质的可能影响。微粒可能有助于观察到的吸收，但无法解释先前报道的大量蒸气辐射强度。讨论了可能的多粒子效应对远谱线机翼吸收的影响。首次使用分子动力学方法来举例说明在稠密等离子体中离子微区的分布函数，这种作用在原理上能够实质上提高谱线的轮廓并增加在离子束区域的吸收。在最近邻近似中，与简单的准静态模型相比，谐振产生了较大的失谐。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号