论文标题
中子光谱法具有高压氮填充的球形比例计数器
Neutron spectroscopy with a high-pressure nitrogen-filled spherical proportional counter
论文作者
论文摘要
球形比例计数器是一个大容量气态检测器，可在几个领域（包括直接暗物质搜索）中找到应用。当探测器装满氮时，由于$^{14} $ n（n，$ \mathrmα$）$^{11} $ b和$^{14} $ n（n，n，p）$^{14} $ c反应。但是，氮是比例计数器的挑战性运行气体，需要高电场强度与气体压力比。受益于球形比例计数器仪器和仿真技术的最新进展，我们报告了最高1.8 bar的操作压力的首个中子测量值。这项成就增强了球形比例计数器的前景，可作为中子光谱仪，适合于包括地下实验室以及工业和医疗环境在内的具有挑战性的环境。
The spherical proportional counter is a large volume gaseous detector which finds application in several fields, including direct Dark Matter searches. When the detector is filled with nitrogen it becomes an effective neutron spectrometer thanks to the $^{14}$N(n,$\mathrmα$)$^{11}$B and $^{14}$N(n,p)$^{14}$C reactions. Nitrogen, however, is a challenging operating gas for proportional counters and requires a high electric field strength to gas pressure ratio. Benefiting from the latest advances in spherical proportional counter instrumentation and simulation techniques, we report first neutron measurements at operating pressures of up to 1.8 bar. This achievement enhances the prospects of the spherical proportional counter to act as a neutron spectrometer appropriate for challenging environments, including underground laboratories, and industrial and medical settings.
