Narrow-area Bragg-edge transmission of iron samples using superconducting neutron sensor

Narrow-area Bragg-edge transmission of iron samples using superconducting neutron sensor
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使用超导中子传感器对铁样品进行窄域布拉格边传输

DOI:
10.1088/1742-6596/2323/1/012028
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发表时间:
2022
期刊:
Journal of Physics: Conference Series
影响因子:
--
通讯作者:
Ishida Takekazu
Ishida Takekazu
中科院分区:
--
文献类型:
--
作者:
Vu The Dang;Shishido Hiroaki;Aizawa Kazuya;Oku Takayuki;Oikawa Kenichi;Harada Masahide;Kojima Kenji M.;Miyajima Shigeyuki;Soyama Kazuhiko;Koyama Tomio;Hidaka Mutsuo;Suzuki Soh Y.;Tanaka Manobu M.;Malins Alex;Machida Masahiko;Ishida Takekazu

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本研究借由研究材料的限制区域神经元传输的布拉格边缘频谱,探讨电流偏置动态电感侦测器(CB-KID)的效能。以尺寸为5× 5× 2 mm 3的铁样品作为典型试验材料。遍历定理用于获得可见光透射光谱,使得透射光谱的长时间平均可以替代地使用具有相同系综大小的独立选择的面积光谱的空间平均来评估。在日本质子加速器研究中心(J-PARC)的束线BL 10上,利用飞行时间(ToF)谱中25 μs的最小时间仓或每个中子脉冲0.0007nm的波长分辨率,在0.43mm2的有限面积样品上观察到了最明显的边缘。由此得到的铁的主布拉格边作为随机100个系综的总和(系综尺寸为3.1× 2.3 μ m2)具有独特的信噪比,并且可以与具有米勒指数的Rietveld透射光谱成像(RITS)程序很好地拟合。我们认为,我们的CB-KID系统是,在原则上,能够分析样品的布拉格边缘小至3.1× 2.3 μ m2。
This study investigates a current-biased kinetic inductance detector (CB-KID) performance by investigating Bragg-edge spectra from the restricted-area neuron transmission of materials. Iron samples with a size of 5× 5× 2 mm 3 were used as typical test materials. The ergodic theorem was used to obtain a visible transmission spectrum so that a long-time averaging of a transmission spectrum can alternatively be evaluated using a space average of independently selected area spectra with the same ensemble size. The most visible edges were observed with a limited area sample of 0.43 mm 2 using a minimum time bin of 25 μs in a time-of-flight (ToF) spectrum or a wavelength resolution of 0.0007 nm of each neutron pulse at beamline BL10 of the Japan Proton Accelerator Research Complex (J-PARC) center. The main Bragg edge of iron as a sum of random 100 ensembles (with an ensemble size of 3.1× 2.3 μm 2) thus obtained has a distinctive signal-to-noise ratio and can be fitted well with the Rietveld Imaging of Transmission Spectra (RITS) program with Miller indices. We consider that our CB-KID system is, in principle, able to analyze the Bragg edge of samples as small as 3.1× 2.3 μm 2.
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