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

Lechner B. A. J.; Hedgeland H.; Allison W.; Ellis J.; Jardine A. P.

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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

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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。

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来源
《Review of Scientific Instruments》 |2013年第2期|p.1-3|共3页
作者
Lechner B. A. J.; Hedgeland H.; Allison W.; Ellis J.; Jardine A. P.;
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作者单位

Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom;

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原文格式 PDF
正文语种 eng
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spectrometers; spin echo (EPR); supersonic flow; 4740Ki;

机译：光谱仪自旋回波（EPR）;超音速流4740Ki;

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1. A source for a high-intensity pulsed beam of metastable helium atoms [J] . T. Halfmann, J. Koensgen, K. Bergmann Measurement Science & Technology . 2000,第10期

机译：亚稳态氦原子的高强度脉冲束源
2. Design and optimization study of a duoplasmatron ion source for high-intensity proton beam [J] . Bowen Zhou, Hong Zhang, Pengjiao Zhang, Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment . 2021,第Sepa11期

机译：高强度质子梁的多样性离子源的设计与优化研究
3. The Stern-Gerlach polarized ion source for the Munich MP-tandem laboratory, a bright source for unpolarized hydrogen and helium ion beams as well [J] . R. Hertenberger, A. Metz, Y. Eisermann, Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment . 2005,第3期

机译：慕尼黑MP串联实验室的Stern-Gerlach极化离子源，也是非极化氢和氦离子束的亮源
4. Characteristics of helium ion beams from multicusp source and study of beam transport [C] . Sasao, M., Nishiura, . 1999

机译：多尖源氦离子束的特性及束流传输的研究
5. Analysis and design of precision optical components in high-intensity, third-generation x-ray beamlines. [D] . Tajiri, Gordon Chikao. 2001

机译：高强度第三代X射线束线中的精密光学组件的分析和设计。
6. Imaging and milling resolution of light ion beams from helium ion microscopy and FIBs driven by liquid metal alloy ion sources [O] . Nico Klingner, Gregor Hlawacek, Paul Mazarov, 2020

机译：由氦离子显微镜和液态金属合金离子离子驱动的光离子束的成像和铣削分辨率
7. Better Beams Through Simplicity: High-intensity Free-Jet Sources in Neutral Atom Microscopy [O] . Gledhill Galen Rhodes 2014

机译：通过简单性实现更好的光束：中性原子显微镜中的高强度自由射流源
8. The Development of High-Intensity Negative Ion Sources and Beams in the USSR [R] . Wells, N. 1981

机译：苏联高强度负离子源和光束的发展

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

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