Measurement of emission spectrum for gaseous argon electroluminescence in visible light region from 300 to 600 nm

Measurement of emission spectrum for gaseous argon electroluminescence in visible light region from 300 to 600 nm
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300至600 nm可见光区气态氩电致发光发射光谱的测量

DOI:
10.1016/j.nima.2021.166107
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发表时间:
2022
期刊:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子:
--
通讯作者:
Yorita Kohei
Yorita Kohei
中科院分区:
--
文献类型:
--
作者:
Aoyama Kazutaka;Kimura Masato;Morohoshi Hiroyuki;Takeda Tomomasa;Tanaka Masashi;Yorita Kohei

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双相Ar探测器可以有效地识别粒子并重建它们的位置。然而,在气相中的二次发光的电致发光(EL)的性质还没有完全理解。早期的研究已经解释了EL过程中使用普通的EL机制,因为一个Ar激基缔合物,但是,这种机制并没有预测的可见光(VL)的发射。最近的测量证实了Ar气电致发光中的VL成分,为了解释这一现象,提出了一种称为中性韧致辐射(NBrS)的新机制。在这项研究中,我们研究了气体Ar EL在VL区从300至600 nm在室温和常压下使用气体时间投影室(TPC)。使用分光仪分散来自TPC发光区域的二次发射光。使用普通EL和NBrS模型解释了观察到的光谱,并讨论了氮杂质的影响。
A double-phase Ar detector can efficiently identify particles and reconstruct their positions. However, the properties of electroluminescence (EL) for secondary light emission in the gas phase are not fully understood. Earlier studies have explained the EL process using an ordinary EL mechanism because of an Ar excimer; however, this mechanism does not predict the emission of visible light (VL). Recent measurements have demonstrated VL components in Ar gas EL, to explain which a new mechanism called neutral bremsstrahlung (NBrS) was proposed. In this study, we investigated gaseous Ar EL in the VL region from 300 to 600 nm at room temperature and normal pressure using a gaseous time projection chamber (TPC). The secondary emission light from the TPC luminescence region was dispersed using a spectrometer. The observed spectrum was interpreted using the ordinary EL and NBrS models, and the effect of nitrogen impurities is discussed herein.
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