| 시설장비 설명 |
Finnigan MAT 262 Thermal Ionization Mass Spectrometer 23 cm radius 90o magnetic sector mass analyzer 8 Faraday Cup and 1 Secondary Electron Multiplier(SEM) for ion counting system System Performance - Resolution 500 이상(10% valley definition) - Mass Range 3-280 u at 10 Kv acceleration potential(positive and negative ions) - Peak Stability ± 30 ppm with in 30 min. - Ion Yield 1.2% 이상: single filament Sr - Abundance Sensitivity 2 ppm 이하 at 237 1u(U) - Amplifiers(1011 ohm) Noise: 2 x 10-16 A for a 4 s integration 5 x 10-17 A for a 64 s integration |
