摘要:
Disclosed herein is a halogen lamp unit comprising a tubular halogen lamp having at its both ends sealed portions hermetically enclosing their respective conductive members. The halogen lamp is supported by holders at its tubular outer wall portions of the envelope adjacent to the sealed end portions without base shells which cover the sealed portions. The holders are cooled by a water-cooling system. The sealed end portions of the lamp are kept in a bare state, thereby avoiding the degradation of the conductive members due to the oxidation thereof. The sealed end portions may be exposed in air-paths to the cooling wind flowing along the tubular halogen lamp.
摘要:
A process for connecting a molybdenum foil to a lead portion with sufficient strength and reliability in which an expensive binder, such as platinum, platinum clad molybdenum, or the like, is not used. According to the invention, a carbon containing or carbon coated molybdenum part is placed between the molybdenum foil and the molybdenum lead portion and then the two are resistance welded to one another. Furthermore, a hermetically enclosed part of a lamp can be produced by this process.
摘要:
A cadmium rare gas discharge lamp of the short arc type that has a high power of the spectra in a wavelength range of 210 nm to 230 nm and a stable lamp voltage in lighting operation for a long period. An arc tube 1 is provided within which are disposed opposed, spaced apart electrodes 2, 3 and thermal insulation films 6, 7. A rare gas is encapsulated together with metal cadmium and a quartz glass is used for the material of the arc tube whose OH radical has a weight content of no more than 200 ppm. Electrodes 4 and 5 are spaced apart no more than 10 mm, so that with a lamp current at least 20 amperes, an arc of the electrode-stable type is formed and radiant light of Cd ions obtained. For the encapsulated rare gas, in one embodiment at least one of the rare gases neon, argon or krypton, are used and are encapsulated at a gas pressure of 35 kPa to 2.5 MPa at a standard temperature of 25.degree. C. The arc tube 1 is formed of quartz glass, electrodes 2 and 3 are placed opposite one another. In another embodiment, a halogen gas is encapsulated in the arc to in an amount from 4.5.times.10.sup.-10 mol/cm.sup.3 of arc tube volume to 2.1.times.10.sup.-7 mol/cm.sup.3 of are tube volume.
摘要翻译:一种短弧型的镉稀释气体放电灯,其在210nm至230nm的波长范围内具有高功率的光谱,并且在长时间的照明操作中具有稳定的灯电压。 设置有电弧管1,其中设置相对的间隔开的电极2,3和绝热膜6,7,稀有气体与金属镉一起被密封,并且石英玻璃用于电弧管的材料,其OH 自由基的重量含量不超过200ppm。 电极4和5的间隔不超过10毫米,使得灯电流至少为20安培,形成电极稳定型弧,并获得Cd离子的辐射光。 对于包封的稀有气体,在一个实施方案中,使用至少一种稀有气体氖,氩或氪,并在25℃的标准温度下以35kPa至2.5MPa的气体压力包封。电弧管1 由石英玻璃形成,电极2和3彼此相对放置。 在另一个实施方案中,将卤素气体以弧形管体积的4.5×10 -10 mol / cm 3封装到管体积的2.1×10 -7 mol / cm 3的量。
摘要:
An oxidation process for an article to be treated in which, by generating ozone with a high concentration, a high treatment rate is achieved. In particular, an oxygen-containing fluid is irradiated with a vacuum ultraviolet rays emitted from a dielectric barrier discharge lamp in which xenon gas is encapsulated, producing a photochemical reaction from which ozone and an activated oxygen result. By causing this ozone and activated oxygen to contact the surface of the article to be treated, the surface of the article is oxidized. An even higher treatment rate can be achieved by generating the activated oxygen with the simultaneous use of a far ultraviolet ray source, thereby increasing the activity of the activated oxygen. Advantageously, the oxidation of the article to be treated with the vacuum ultraviolet rays and far ultraviolet rays is performed in accordance with the relationship:(p.times.d)/(1+I.sup.1/2)=0.33where I is a radiation density (mW/cm.sup.2) of the far ultraviolet rays on a surface of the article to be treated in which there is no light absorption between the far ultraviolet ray source and the surface of the article to be treated, d is a shortest distance (cm) of passage of the vacuum ultraviolet rays emitted from the dielectric barrier discharge lamp to the surface of the article to be treated, and p is an oxygen partial pressure (atm) of the oxygen-containing gas, which is present between the dielectric barrier discharge lamp and the article to be treated.
摘要:
A discharge lamp uses resonance lines which are emitted by ions in an excitation state and has a high short wave ultraviolet ray output. The lamp is provided with a pair of electrodes, having a reciprocal spacing of equal to or smaller than 12 mm, and is of the electrode-stable type. As the major emission material, cadmium is encapsulated in a quantity permitting a partial pressure P in operation of 3.times.10.sup.3 Pa to 1.3.times.10.sup.5 Pa. The lighting operation is performed in a state in which a lamp current J.sub.L fulfills the following condition (a):0.7
摘要:
A dielectric barrier discharge lamp has a discharge vessel having a discharge chamber filled with a discharge gas. Excimer molecules are developed due to a dielectric barrier discharge. The discharge vessel is equipped with a window for the output of the light radiated from the excimer molecules. A getter space, equipped with a getter, communicates with the discharge chamber. A common wall separates the discharge chamber from the getter space, or a separately arranged getter space is connected to the discharge chamber via a tube. In one form, the discharge vessel and window is made of quartz glass containing less than 10 ppm of OH radicals by weight.