用脉冲冷中子测量中子寿命
Neutron lifetime measurement with pulsed cold neutrons
摘要：
通过将来自日本质子加速器研究中心（J-PARC）散裂中子源的脉冲中子束的衰变率与$^3$ He核的反应速率进行比较，测量了中子寿命。衰变速率和反应速率是通过同时检测来自中子衰变的电子和来自$^3$ He（n，p）$^3$ H反应的质子来确定的，该反应使用工作气体包含稀释的$^3$ He的气室。测得的中子寿命为$898\,\pm\,10\,_{\rm stat}\,^{+15}_{-18}\,_{\rm sys}\,$ s。
英文摘要：
The neutron lifetime has been measured by comparing the decay rate with the reaction rate of $^3$He nuclei of a pulsed neutron beam from the spallation neutron source at the Japan Proton Accelerator Research Complex (J-PARC). The decay rate and the reaction rate were determined by simultaneously detecting electrons from the neutron decay and protons from the $^3$He(n,p)$^3$H reaction using a gas chamber of which working gas contains diluted $^3$He. The measured neutron lifetime was $898\,\pm\,10\,_{\rm stat}\,^{+15}_{-18}\,_{\rm sys}\,$s.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
