A Parallel Plate Avalanche Counter for Isotope Separator On-line Moessbauer Spectroscopy
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摘要: 研制了一种用于同位素分离在线穆斯堡尔谱学的平行板雪崩计数器,计数器仅重40g。用它测量由穆斯堡尔共振吸收后放出的内转换电子,采用85%^119Sn同位素增丰的SnO2作为阴极吸收材料,测得的穆斯堡尔谱的信噪比为11,是一种适合在线穆斯堡尔实验的计数器。对该计数器的性能进行了讨论。A Parallel Plate Avalanche Counter (PPAC) with weighted about 40 g was developed for isotope separator on-line Moessbauer Spectroscopy. It detects the internal conversion electrons emitted from the resonance Moessbauer nuclide. The signal-to-noise ratio of the spectra reaches 11 for 85% enriched ^119SnO2 cathode and absorber. It is an effective detector for on-line Moessbauer experiments. The perform ance of the counter was discussed in detail.Abstract: A Parallel Plate Avalanche Counter (PPAC) with weighted about 40 g was developed for isotope separator on-line Moessbauer Spectroscopy. It detects the internal conversion electrons emitted from the resonance Moessbauer nuclide. The signal-to-noise ratio of the spectra reaches 11 for 85% enriched ^119SnO2 cathode and absorber. It is an effective detector for on-line Moessbauer experiments. The perform ance of the counter was discussed in detail.
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