充气飞行时间探测方法分析

Analysis of Gas-Filled Time-of-Flight Detection Method

摘要: 本工作涉及充气飞行时间探测器的工作原理和实验测量结果。在不同能量(64、48和33 MeV)下，利用充气飞行时间探测方法对同量异位素³⁶S和³⁶Cl进行鉴别，并与用传统的ΔE－E方法在相同能量下的鉴别结果进行比较。实验结果表明，在入射能量较高（E_i＞40 MeV）时，ΔE－E法的鉴别能力比充气飞行时间法的稍好些；在E_i＜40 MeV时，充气飞行时间法的鉴别能力比ΔE－E法的好，入射能量为20～40 MeV时，充气飞行时间法能明显将³⁶S和³⁶Cl区分出来。

Abstract: The paper concerns in the principle and the experimental results of gas－filled timeofflight (GF－TOF) detector. ³⁶Cl and ³⁶S particles were successfully separated in the TOF spectra from the GF－TOF detector for the ion with the energy of 64, 48 and 33 MeV, respectively. The comparison of the separation power of isobars between the GF－TOF method and the ΔE－E method was carried out. The experimental results indicate that the separation power of the ΔE－E method is better than that of the GF－TOF method at the energy larger than 40 MeV, and the GF－TOF method is better than the ΔE－E method at the energy less than 40 MeV, especially at the energy range of 20－40 MeV.