首页> 外文期刊>Review of Scientific Instruments >Note: A new design for a low-temperature high-intensity helium beam source
【24h】

Note: A new design for a low-temperature high-intensity helium beam source

机译:注意:低温高强度氦束源的新设计

获取原文
获取原文并翻译 | 示例
获取外文期刊封面目录资料

摘要

A high-intensity supersonic beam source is a key component of any atom scattering instrument, affecting the sensitivity and energy resolution of the experiment. We present a new design for a source which can operate at temperatures as low as 11.8 K, corresponding to a beam energy of 2.5 meV. The new source improves the resolution of the Cambridge helium spin-echo spectrometer by a factor of 5.5, thus extending the accessible timescales into the nanosecond range. We describe the design of the new source and discuss experiments characterizing its performance. Spin-echo measurements of benzene/Cu(100) illustrate its merit in the study of a typical slow-moving molecular adsorbate species.
机译:高强度超声束源是任何原子散射仪的关键部件,会影响实验的灵敏度和能量分辨率。我们提出了一种可以在低至11.8 K的温度下工作(相当于2.5 meV的束能量)的光源的新设计。新来源将剑桥氦自旋回波光谱仪的分辨率提高了5.5倍,从而将可访问的时间范围扩展到了纳秒范围。我们描述了新来源的设计并讨论了表征其性能的实验。苯/铜(100)的自旋回波测量表明了其在典型的缓慢移动的分子吸附物种类研究中的优点。

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