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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(Ei>40 MeV)时,ΔE-E法的鉴别能力比充气飞行时间法的稍好些;在Ei<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.
【Key words】 accelerator mass spectrometry; gas-filled time-of-flight; time resolution; (isobar); particle identification;
- 【文献出处】 原子能科学技术 ,Atomic Energy Science and Technology , 编辑部邮箱 ,2006年02期
- 【分类号】TL817.8
- 【被引频次】3
- 【下载频次】57