High intensity far u.v. radiation source专利检索-高强度放电灯气体放电灯灯光专利检索查询-专利查询网

High intensity far u.v. radiation source

阅读：378发布：2021-11-14

专利汇可以提供High intensity far u.v. radiation source专利检索，专利查询，专利分析的服务。并且A far U.V. emitting vapor electric discharge lamp which emits selectively in the wavelength band of approximately 2,000 to 2,300 A.U. utilizes a light emitting media of a vaporizable ionizable metal such as cadmium or zinc at very low pressure. High current density in excess of 1 ampere per square centimeter is used to excite metal to high intensity emission in an ambient of a noble gas at low pressure. In accord with a preferred embodiment, cadmium or zinc vapors are excited in the presence of xenon gas. The xenon has metastable states which enter into the metal vapor excitation mechanism, resulting in increased intensity of emission at the wavelengths characteristic of the metal species under these conditions of current density and pressure.，下面是High intensity far u.v. radiation source专利的具体信息内容。

权利要求

2. The lamp of claim 1 wherein said vaporizable ionizable metal is cadmium, said discharge envelope wall temperature is maintained in the operating range of approximately 200* to 400* C and said U.V. emission is within the wavelength band of approximately 2,140 to 2,290 A.U.

3. The lamp of claim 2 wherein said discharge envelope wall is maintained at a temperature of approximately 250* to 350* C and the partial pressure of cadmium within said discharge envelope is approximately 3 X 10 3 to 3 X 10 1 torr.

4. The lamp of claim 1 wherein said vaporizable ionizable metal is zinc, said discharge envelope wall temperature is maintained at a temperature of approximately 250* to 450* C and said U.V. emission is within the wavelength band of approximately 2,020 to 2,140 A.U.

5. The lamp of claim 4 wherein said discharge envelope wall is maintained at a temperature of approximately 300* to 400* C and the partial pressure of zinc within said discharge envelope is approximately 3 X 10 3 to 3 X 10 1 torr.

6. The lamp of claim 1 wherein said means for maintaining said discharge envelope wall at said temperature during lamp operation includes an hermetically sealed U.V. transmissive envelope enclosing discharge envelope and containing an interposed low pressure volume having poor thermal conduction characteristic to prevent heat loss from said discharge envelope.

7. The lamp of claim 6 wherein said interposed volume is evacuated.

8. The lamp of claim 7 wherein said interposed volume is filled with a low conductivity gas at reduced pressure.

9. The lamp of claim 1 wherein said noble gas within said envelope is at a pressure of approximately 2-5 torr.

10. The lamp of claim 1 wherein said noble gas is xenon.

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