| 摘要 |
PROBLEM TO BE SOLVED: To increase radiation light intensity of a deuterium lamp having continuous spectrums in an ultraviolet region including vacuum ultraviolet and enable irradiating a large area at high irradiance. SOLUTION: An electrode pair 7, 8 situated outside a tubular discharge container 1 which transmits ultraviolet rays is covered with dielectric material and is pierced into the discharge container 1. A shielding box 2 having a partition wall 3 between the electrode pair 7, 8 is situated in the discharge container 1. Deuterium, hydrogen, a mixed gas containing deuterium or a mixed gas containing hydrogen is sealed in the discharge container 1 as discharge gas. A slit 4 elongated in an axial direction of the discharge container 1 is formed in the partition wall 3 to narrow a discharge path generated between the electrode pair 7, 8. The slit 4 makes a luminous point continuous and eliminates limitation in a longitudinal direction of the lamp. When a high voltage sine wave is applied between electrodes 7, 8, dielectric material barrier discharge is generated and ultraviolet continuous spectrum light of high irradiance is obtained in a large area. COPYRIGHT: (C)2008,JPO&INPIT
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