A new method for measuring the neutron lifetime using an in situ neutron detector.

A new method for measuring the neutron lifetime using an in situ neutron detector.
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DOI:
10.1063/1.4983578
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发表时间:
2017-05
期刊:
The Review of scientific instruments
影响因子:
--
通讯作者:
Zeck BA
Zeck BA
中科院分区:
其他
文献类型:
--
作者:
Morris CL;Adamek ER;Broussard LJ;Callahan NB;Clayton SM;Cude-Woods C;Currie SA;Ding X;Fox W;Hickerson KP;Hoffbauer MA;Holley AT;Komives A;Liu CY;Makela M;Pattie RW Jr;Ramsey J;Salvat DJ;Saunders A;Seestrom SJ;Sharapov EI;Sjue SK;Tang Z;Vanderwerp J;Vogelaar B;Walstrom PL;Wang Z;Wei W;Wexler JW;Womack TL;Young AR;Zeck BA

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本文描述了一种利用瓶装超冷中子(UCN)测量中子寿命的新方法,该方法能更好地描述系统的不确定度,并且比以前的测量技术具有更高的精度。一个可以放入陷阱的有源探测器已经被用来测量作为高度函数的中子分布,并测量边缘捕获的UCN对中子寿命测量的影响。此外,测量还展示了相空间演化及其对寿命测量的影响。
In this paper, we describe a new method for measuring surviving neutrons in neutron lifetime measurements using bottled ultracold neutrons (UCN), which provides better characterization of systematic uncertainties and enables higher precision than previous measurement techniques. An active detector that can be lowered into the trap has been used to measure the neutron distribution as a function of height and measure the influence of marginally trapped UCN on the neutron lifetime measurement. In addition, measurements have demonstrated phase-space evolution and its effect on the lifetime measurement.
影响因子: 1.4
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