arXivDaily arXiv每日学术速递 周一至周五更新
arXiv physics/0606077physics.ins-det
收藏

Nordball液体scintillator阵列中子响应的测量和模拟

Measurement and simulation of the neutron response of the Nordball liquid scintillator array

A. Reiter

摘要:

用~(252)Cf裂变源的飞行时间测量了液体闪烁体阵列Nordball对1.5 < T_n < 10 MeV中子的响应。裂变碎片是通过薄膜塑料闪烁体探测到的。测得的微分和积分中子探测效率与探测器的蒙特卡罗模拟的预测吻合得很好,该探测器精确地模拟几何形状,并将测得的非线性质子光输出作为能量的函数。模型的能力,提供系统的校正光中子截面,测量Nordball在低能量下,测试在测量的两体氘核光致衰变截面在E_γ =14-18 MeV。修正后,目前的2 H(γ,n)p测量同意与发表的评估的大机构的2 H(γ,p)n数据。

英文摘要:

The response of the liquid scintillator array Nordball to neutrons in the energy range 1.5 < T_n < 10 MeV has been measured by time of flight using a 252Cf fission source. Fission fragments were detected by means of a thin-film plastic scintillator. The measured differential and integral neutron detection efficiencies agree well with predictions of a Monte Carlo simulation of the detector which models geometry accurately and incorporates the measured, non-linear proton light output as a function of energy. The ability of the model to provide systematic corrections to photoneutron cross sections, measured by Nordball at low energy, is tested in a measurement of the two-body deuteron photodisintegration cross section in the range E_gamma=14-18 MeV. After correction the present 2H(gamma,n)p measurements agree well with a published evaluation of the large body of 2H(gamma,p)n data.

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。

↑