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Outline
A fast optical pyrometer for shock temperature measurement was developed based on GDB159/142 photo-multiplier tubes (PMT) and one single optical fiber incorporated with dichroic filters. Main features include the central wavelengths within the spectrum range of 340~811 nm, a rise-time of 2~3 ns, and measurable shock temperature span of 2 500~15 000 K. Results of the pulse-linearity measurements indicate that the dynamical linearity values for all six channels are greater than 200 mV (50 Ω load resistor) which meet the requirement for recording on the digital oscilloscopes with good signal-to-noise ratio. Calibration method by the spectral irradiance with a halogen lamp and examples of dynamic measurements are presented. It is demonstrated that this system produces reasonable outputs with stable performance at an economical cost.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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