パルス放電による紫外線放射制御と三原色発光
1994 年 78 巻 6 号 p. 248-254
詳細
1994 年 78 巻 6 号 p. 248-254
We tried to control the 253.7nmHgl ultraviolet radiation for an application of our multicolored discharge. We have developed a new method to change the color of a low pressure Ne-Hg discharge lamp radiating three primary colors.
This paper describes the principles of our new method and results of tests. We used various discharge tubes made of quartz for the tests. Some of them had a few probes for measurement of electron temperature.
We applied triangular pulses with short rise time to a tube to get red spectra from neon and ones with long rise time to get blue spectra from mercury. The optimum pulse width was about 300, μs for any condition, but the optimum repetition frequency depended on a diameter of the tube
When the pulse frequency was about 20kHz and pulse width was a few, us, the relative intensity of 253.7nmHgI radiation to visible radiation was very strong.
We were able to get the green luminescence, if green fluorescent material was painted on the inner wall of the tube. Although the color difference between blue and green was not necessarily enough, we were able to get the three primary colors by adjusting the density of fluorescent material.
