Detection of atomic nuclear reaction products via optical imaging
Detection of atomic nuclear reaction products via optical imaging
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DOI：
10.1103/physrevc.99.065805
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发表时间：
2019-03
影响因子：
3.1
通讯作者：
Benjamin Loseth;Ruoyu Fang;Dustin Frisbie;Kristen M Parzuchowski;C. Ugalde;J. Wenzl;J. Singh
中科院分区：
文献类型：
--
作者：
Benjamin Loseth;Ruoyu Fang;Dustin Frisbie;Kristen M Parzuchowski;C. Ugalde;J. Wenzl;J. Singh
本文提出了一种用低温冷冻惰性气体固体捕获产物测量低产额核反应截面的新方法。一旦嵌入光学透明的惰性气体固体中，产物原子就可以通过激光诱导荧光选择性地识别，并通过光学成像单独计数以确定横截面。通过光学成像的单原子灵敏度是可行的，因为惰性气体原子的周围晶格促进了产物原子的激发和发射光谱之间的大的波长偏移。来自单分子光谱学和超分辨率成像领域的工具和技术结合电磁反冲分离器，用于束和同位素区分，允许具有接近统一效率、高度选择性和单原子灵敏度的检测方案。这种技术可以用来确定一些天体物理上重要的核反应速率。
In this paper we propose a new method for measuring the cross section of low yield nuclear reactions by capturing the products in a cryogenically frozen noble gas solid. Once embedded in the noble gas solid, which is optically transparent, the product atoms can be selectively identified by laser induced fluorescence and individually counted via optical imaging to determine the cross section. Single atom sensitivity by optical imaging is feasible because the surrounding lattice of noble gas atoms facilitates a large wavelength shift between the excitation and emission spectrum of the product atoms. The tools and techniques from the fields of single molecule spectroscopy and superresolution imaging in combination with an electromagnetic recoil separator, for beam and isotopic differentiation, allow for a detection scheme with near unity efficiency, a high degree of selectivity, and single atom sensitivity. This technique could be used to determine a number of astrophysically important nuclear reaction rates.