| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a compact apparatus for generating a dark current from which the dark current can be obtained in large quantity by low voltage in atmospheric pressure. <P>SOLUTION: An electrode group is formed on an electrode arranging insulating plate 1, which consists of one positive or negative central electrode 2 arranged in the center of a circle, a plurality of circumferential electrodes 3 each of which is arranged on the outer circumference of the circle so that a fixed distance from the central electrode 2 is kept between each of the electrodes 3 and the electrode 2 and has a pole opposed to that of the electrode 2 and a plurality of relay electrodes 4 each of which is arranged between the electrode 2 and any of the electrodes 3, is not connected to an electrically conductive body and is insulated from a power source 5. Each of these electrodes is formed into a columnar shape having complete roundness. The adjacent electrodes are arranged at such a short distance that plasma is not generated on the surface of the opposed electrode and the distance between one pair of the adjacent electrodes is made equal to that between another pair of the adjacent electrodes. The source 5 is arranged for impressing such voltage among the electrode group that the dark current of the quantity enough to produce an OH radical from a carboxylic acid is obtained. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
