Quenching factor for low-energy nuclear recoils in a plastic scintillator
Quenching factor for low-energy nuclear recoils in a plastic scintillator
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DOI：
10.1103/physrevc.85.065801
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发表时间：
2011-11
影响因子：
3.1
通讯作者：
L. Reichhart;D. Akimov;H. Araújo;E. Barnes;V. Belov;A. Burenkov;V. Chepel;A. Currie;L. deViveiros;B. Edwards;V. Francis;C. Ghag;A. Hollingsworth;M. Horn;G. Kalmus;A. Kobyakin;A. Kovalenko;V. Lebedenko;A. Lindote;M. Lopes;R. Luscher;P. Majewski;A. Murphy;F. Neves;S. Paling;J. G. D. Cunha;R. Preece;J. Quenby;P. Scovell;C. Silva;V. Solovov;N. Smith;P. Smith;V. Stekhanov;T. Sumner;C. Thorne;R. Walker
中科院分区：
文献类型：
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作者：
L. Reichhart;D. Akimov;H. Araújo;E. Barnes;V. Belov;A. Burenkov;V. Chepel;A. Currie;L. deViveiros;B. Edwards;V. Francis;C. Ghag;A. Hollingsworth;M. Horn;G. Kalmus;A. Kobyakin;A. Kovalenko;V. Lebedenko;A. Lindote;M. Lopes;R. Luscher;P. Majewski;A. Murphy;F. Neves;S. Paling;J. G. D. Cunha;R. Preece;J. Quenby;P. Scovell;C. Silva;V. Solovov;N. Smith;P. Smith;V. Stekhanov;T. Sumner;C. Thorne;R. Walker
塑料蒸发器广泛应用于工业、医学和科学研究，包括核物理和粒子物理。虽然它们最常见的应用之一是中子探测，但关于它们对低能核反冲反应的实验数据却很少。在这里，中子引起的核反冲在聚苯乙烯基塑料闪烁体（UPS-923 A）的相对闪烁效率，探索反冲能量在125和850千电子伏之间。蒙特卡罗模拟，结合光收集效率和能量分辨率的影响，被用来生成中子散射光谱，所观察到的闪烁信号的分布相匹配的参数化的能量依赖的淬灭因子。在能量高于300 keV时，用Birks的半经验公式合理地描述了这种依赖关系，并确定了kB因子为（0.014±0.002）g MeV-1cm-2.在该能量以下，测量的猝灭因子福尔斯比Birks形式主义预测的更陡地下降。© 2012美国物理学会。
Plastic scintillators are widely used in industry, medicine, and scientific research, including nuclear and particle physics. Although one of their most common applications is in neutron detection, experimental data on their response to low-energy nuclear recoils are scarce. Here, the relative scintillation efficiency for neutron-induced nuclear recoils in a polystyrene-based plastic scintillator (UPS-923A) is presented, exploring recoil energies between 125 and 850 keV. Monte Carlo simulations, incorporating light collection efficiency and energy resolution effects, are used to generate neutron scattering spectra which are matched to observed distributions of scintillation signals to parameterize the energy-dependent quenching factor. At energies above 300 keV the dependence is reasonably described using the semiempirical formulation of Birks and a kB factor of (0.014±0.002) g MeV -1 cm -2 has been determined. Below that energy, the measured quenching factor falls more steeply than predicted by the Birks formalism. © 2012 American Physical Society.